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Beidou - China's Navigation System


Tyneside, UK
2020 Sep 26
Saturday, Day 270

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Beidou System

China saw out calendar year 2012 with an announcement that the Beidou navigation system was fully tested and complete for the Asia-Pacific region and was providing a full service.


Development Series 2000-2007

The main characteristic of the development satellites was that they had no onboard clock and had to pick up a time signal from the ground. Alternatively, users could use a secondary time source to combine with the navigation signal for positional calculation.

Of the development satellites, Beidou 1D (2007-003A/30323) was retired early 2009 as the early operational satellites came on stream, possibly indicating that its navigation payload was no longer functioning. It remained at 144° east for all of its life, not quite the 140° longitude of the standard location.

Of the others, Beidou 1A (2000-069A/26599) and Beidou 1B (2000-082A/26643) remained on station, supplementing the operational satellites, until late 2011 when they moved to graveyard orbit. By then, several operational satellites were in use.

Beidou 1C (2003-021A/27813) seems to been in use until mid-2012 when it was moved from 110° east, where it had been since launch, to 86°C east. It remained there until 2012 December when it too was moved to a graveyard orbit. Beidou 4 (2010-024A/36590), an operational satellite, took over the station.


Regional Satellites 2007-12

Beidou LogoOf the operational satellites, Beidou 2/G2 (2009-018A/34779) was never used at a fixed location. It drifted from place to place round the geosyschronous arc, occasionally settling down and then moving on. Two possibilities come to mind in that it may all along have been a test vehicle for use away from the Asia-Pacific region. Alternatively it may have suffered degradation of its navigation signal, making it useless for full operation, so it could have been relegated to an engineering test role.

With the 2012 announcement, that the regional constellation, covering the Asia-Pacific area, was complete it contained vehicles in a combination of true geosynchronous orbit and 55° inclined geosynchronous orbit. The 20,000 kilometre circular MEO at 55° inclination was also in use but it was probably as a precursor to rolling-out global coverage.


Global System 2015-2020

China's next move was to be enhancement of the constellation to give full global coverage, to place it on a par with GPS and GLONASS. The aim is to complete this by 2020.

Rollout consists of a mixture of new satellites (Phase 3) in MEO and replenishments of the inclined GEO element of the constellation using second generation satellites. Once completed, the true GEO satellites may be phased out.

The following table lists all launches in connection development and operation of the Beidou space segment. Published locations for the geosynchronous Beidou satellites are (all easterly): 80°, 110°.5, 140° and 160°.


2000-069
CZ 3A
Xichang Space Centre
2000 Oct 30, 16:02
Beidou-1 01
2000-069A
26599
in space
Developmental satellite in geosynchronous orbit for China's navigation satellite system. It differs from the operational satellites by not having an onboard clock, and relaying time information from the ground. Moved to graveyard orbit 2011 Dec.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2000 Oct 30, 22:58274100.761017441890752.7124.98180
2000 Nov 09, 18:00421650.000335772358021436.120.17154140° east
2011 Nov 20, 17:17421660.000435771358051436.162.6715858° east
2011 Dec 21, 00:50425510.001936093362521455.873.2224482° west
2016 Mar 28, 18:03425510.001136127362181455.856.37301174° west


2000-082
CZ 3A
Xichang Space Centre
2000 Dec 20, 16:20
Beidou-1 02
2000-082A
26643
in space
Developmental satellite in geosynchronous orbit for China's navigation satellite system. It differs from the operational satellites by not having an onboard clock, and relaying time information from the ground. Moved to graveyard orbit 2011 Dec.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2000 Dec 21, 04:58273680.759719841781750.9625.02180
2000 Dec 27, 22:33421640.000235776357961436.060.1216380° east
2011 Nov 20, 20:05421650.000135782357921436.124.1218880° east
2011 Dec 18, 03:23424500.002235979361661450.714.2128610° west


2003-021
CZ 3A
Xichang Space Centre
2003 May 24, 16:34
Beidou-1 03
2003-021A
27813
in space
Developmental satellite in geosynchronous orbit for China's navigation satellite system. It differs from the operational satellites by not having an onboard clock, and relaying time information from the ground. 2012 Jun-Jul: moved to 86° east prior to re-location of Beidou 4 (2010-024A/36590) in the opposite direction. Moved to graveyard orbit 2012 Dec after arrival on station of Beidou 16 (2012-057A/38953).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2003 May 25, 08:02273300.759319941704749.4025.06180
2003 Jun 04, 18:16421650.000835751358221436.090.2937111° east
2011 Nov 20, 18:06421640.000635760358131436.081.0618111° east
2012 Apr 09, 22:09421650.001335733358411436.101.38356111° east
2012 Jul 06, 21:57421670.000135783357941436.191.5933085° east
2012 Oct 05, 20:03421660.000335776358001436.171.7815686° east
2012 Dec 14, 22:17422050.000535806358481438.161.9423480° east
2012 Dec 28, 19:57422630.000035884358861441.131.9725867° east


2007-003
CZ 3A
Xichang Space Centre
2007 Feb 2, 16:28
Beidou-1 04
2007-003A
30323
in space
Developmental satellite in geosynchronous orbit for China's navigation satellite system. It differs from the operational satellites by not having an onboard clock, and relaying time information from the ground. Moved to graveyard orbit 2009 Feb.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2007 Feb 03, 19:29273610.759919241775750.7025.00180
2007 Apr 30, 05:33421650.010835332362421436.126.30276144° east
2009 Feb 18, 06:54421640.012335269363031436.054.68304144° east
2009 Feb 20, 17:06424160.009235647364281448.934.65325138° east


2007-011
CZ 3A
Xichang Space Centre
2007 Apr 13, 20:11
Beidou-1S M-1S
2007-011A
31115
in space
In orbit validation satellite in China's pre-operational navigation satellite system in MEO.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2007 Apr 14, 06:08172400.618519821526375.4655.03174
2007 Apr 19, 08:46279100.00052151821545773.3855.26184
2011 Nov 20, 09:21279100.00082151121554773.4056.60192


2009-018
CZ 3C
Xichang Space Centre
2009 Apr 14, 16:16
Beidou-2 G-2
2009-018A
34779
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit. Entered GEO near 85° east but then drifted westward along the geosynchronous arc. It returned to 85° east during 2011 but was allowed to drift further, indicating that the navigation payload was not fully functional - relegating it to a test mode. It may have been used as a test vehicle for navigation in regions away from the Asia-Pacific region.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2009 Apr 15, 02:50244110.730121035857632.6320.53180
2009 May 02, 18:38421650.000335775357981436.090.9410585° east
2009 Oct 29, 21:46421720.000135791357981436.480.519175° east
2010 May 02, 15:08421650.000335775357991436.110.09764° east
2010 Sep 08, 22:41421350.004735561359531434.570.2915873° east
2011 Nov 21, 14:11421930.005135600360311437.561.3116084° east
2012 Oct 17, 01:38421630.005735544360261436.022.0416620° east
2016 Mar 28, 11:23421350.009035378361361434.584.5519465° east


2010-001
CZ 3C
Xichang Space Centre
2010 Jan 16, 16:12
Beidou-2 G-1
2010-001A
36287
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2010 Jan 17, 08:16242790.729518935613627.4820.44180
2010 Jan 25, 16:49421640.004435600359721436.081.83230160° east
2011 Nov 22, 09:49421660.000335776357991436.141.51192140° east
2016 Mar 29, 21:33421640.000335775357971436.071.59189140° east


2010-024
CZ 3C
Xichang Space Centre
2010 Jun 2, 15:53
Beidou-2 G-3
2010-024A
36590
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit. Moved to 110° east 2012 Nov to replace Beidou 1C (2003-021A/27813).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2010 Jun 03, 02:29243140.729120935663628.8520.54180
2010 Jun 11, 20:15421640.000235778357951436.081.8219685° east
2011 Nov 22, 16:16421640.000135781357921436.071.1724384° east
2012 Nov 07, 15:48420410.000235653356731429.801.2318586° east
2012 Nov 23, 23:11421640.000335772357991436.041.25293110° east
2016 Mar 30, 00:37421660.000335773358021436.151.52301111° east


2010-036
CZ 3A
Xichang Space Centre
2010 Jul 31, 21:30
Beidou-2 IGEO-1
2010-036A
36828
in space
Fully-functional satellite in China's pre-operational navigation satellite system. It also provides time and messaging services for the Asia-Pacific region. Orbit is inclined at 55° to provide northerly coverage. It has an equator crossing near 118° east longitude.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2010 Aug 01, 03:35243980.730819035851632.1355.06175
2010 Aug 07, 17:18421590.002735667358941435.7955.09183116° east
2010 Oct 06, 10:52421640.002635677358951436.0655.06182118° east
2016 Mar 29, 21:39421690.004435603359781436.2954.25215119° east


2010-057
CZ 3C
Xichang Space Centre
2010 Oct 31, 16:26
Beidou-2 G-4
2010-057A
37210
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2010 Nov 01, 07:12243850.730619235821631.5820.48180
2010 Nov 10, 13:14421650.000535764358091436.091.82208160° east
2011 Nov 21, 12:34421640.000435769358041436.081.04196160° east
2016 Mar 29, 14:17421640.000535765358071436.060.98182160° east


2010-068
CZ 3A
Xichang Space Centre
2010 Dec 17, 20:20
Beidou-2 IGEO-2
2010-068A
37256
in space
Fully-functional satellite in China's pre-operational navigation satellite system. It also provides time and messaging services for the Asia-Pacific region. Orbit is inclined at 55° to provide northerly coverage. Equator crossing near 118° east longitude to share service with Beidou 2-05 (2010-036A/36828).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2010 Dec 19, 02:41243790.730818435818631.3655.09175
2010 Dec 22, 13:38421650.001735717358561436.0955.24179120° east
2016 Mar 29, 17:33421670.004035621359571436.2053.67205119° east


2011-013
CZ 3A
Xichang Space Centre
2011 Apr 9, 20:47
Beidou-2 IGEO-3
2011-013A
37384
in space
Fully-functional satellite in China's pre-operational navigation satellite system.. It also provides time and messaging services for the Asia-Pacific region from its 55° inclined geosynchronous orbit that crosses the equator near 118° east longitude to share service with Beidou 2-05 (2010-036A/36828) and Beidou 2-07 (2010-068A 37256).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
estimated orbit239210.725319234893613.6555.10175
2011 Apr 13, 20:06420270.001235599356981429.0555.29333118° east
2011 Apr 15, 14:15421600.002135694358711435.8755.29184118° east
2016 Mar 28, 21:17421610.002635672358931435.8957.28204121° east


2011-038
CZ 3A
Xichang Space Centre
2011 Jul 26, 21:44
Beidou-2 IGEO-4
2011-038A
37763
in space
Fully-functional satellite in China's pre-operational navigation satellite system. It also provide time and messaging services for the Asia-Pacific region from a 55° inclined geosynchronous orbit crossing the equator near 93° east longitude, parked as an on-orbit spare 25 degrees to the west of the main inclined group of Beidou 2-05 (2010-036A/36828), Beidou 2-07 (2010-068A 37256) and Beidou 2-08 (2011-013A/37384) . Launch was about 20 minutes later than expected, indicating a possible unplanned hold in the countdown.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2011 Jul 29, 08:18243600.729820435759630.6355.12175
2011 Aug 06, 19:21421630.002035699358711436.0255.2118893° east
2016 Mar 29, 21:56421590.003835620359431435.8354.5520793° east


2011-073
CZ 3A
Xichang Space Centre
2011 Dec 1, 21:07
Beidou-2 IGEO-5
2011-073A
37948
in space
Fully-functional satellite in China's pre-operational navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from a 55° inclined geosynchronous orbit crossing the equator near 93° east longitude - parked as an on-orbit spare along with Beidou 2-09 (2011-038A/37763) 25 degrees to the west of the main inclined group of Beidou 2-05 (2010-036A/36828), Beidou 2-07 (2010-068A 37256) and Beidou 2-08 (2011-013A/37384). Arrived on station 2011 Dec 10 at 10:55 UTC ±20 min.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2011 Dec 02, 07:46243810.731317335832631.4355.34175
2011 Dec 14, 06:30421630.001935704358661436.0155.1718995° east
2016 Mar 29, 03:07421640.003635633359391436.0653.7720295° east


2012-008
CZ 3C
Xichang Space Centre
2012 Feb 24, 16:12
Beidou-2 G-5
2012-008A
38091
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit. Its initial geosynchronous location was not one of the expected operational slots so the satellite may be an on-orbit spare.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2012 Feb 26, 16:05245280.730323736064637.1821.14182
2012 Mar 01, 00:44422240.002235751359401439.131.8830959° east
2012 Mar 05, 05:08421660.000335776357991436.151.871259° east


2012-018
CZ 3B
Xichang Space Centre
2012 Apr 29, 20:50
Beidou-2 M-3
2012-018A
38250
in space
Phase 1 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2012 Apr 30, 15:39172730.619319721592376.5455.04173
2012 May 09, 08:17279050.00242146021595773.1955.16186
Beidou-2 M-4
2012-018B
38251
in space
Phase 1 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2012 May 01, 01:45172590.618920021562376.0955.04174
2012 May 10, 04:27279110.00262146121605773.4454.97180
2012 May 20, 11:00279060.00272145221603773.2155.10180


2012-050
CZ 3B
Xichang Space Centre
2012 Sep 18, 19:50
Beidou-2 M-5
2012-050A
38774
in space
Phase 1 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2012 Sep 28, 15:55279050.00232146221591773.1955.00183
Beidou-2 M-6
2012-050B
38775
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2012 Sep 20, 06:12172670.619319521583376.3554.98174
2012 Sep 28, 06:39279040.00172147721574773.1355.09210


2012-059
CZ 3C
Xichang Space Centre
2012 Oct 25, 15:33
Beidou-2 G-6
2012-059A
38953
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit. Precise launch time - 15:33:04 UTC, injected into geosynchronous near its planned location at 80° east on Oct 28 at approx 10:00 UTC. On completion of testing, Beidou 16 became the final satellite needed to provide full navigation coverage in the Asia-Pacific region.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2012 Oct 25, 10:49238170.725216734712609.6820.54180
2012 Nov 01, 17:26421650.000335775357991436.111.8430480° east
2016 Mar 29, 20:18421650.000235779357951436.100.7525380° east


2015-019
CZ 3C
Xichang Space Centre
2015 Mar 30, 13:52
Beidou-3S IGEO-1S
2015-019A
40549
in space
In-orbit validation satellite in China's navigation satellite system in inclined geosynchronour orbit. Transmitted navigation signals are different from those of the operational satellites.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2015 Apr 02, 08:03426670.011535797367811461.8454.98172163° west
2015 Apr 28, 22:10421580.004135606359531435.7454.9617495° east
2015 Aug 10, 20:38421650.004635595359791436.1054.9117898° east
2016 Mar 29, 00:21421630.004035614359551435.9954.7618097° east


2015-037
CZ 3B
Xichang Space Centre
2015 Jul 25, 12:29
Beidou-3S M-1S
2015-037A
40748
in space
In-orbit validation satellite China's navigation system in MEO. Transmitted navigation signals are different from those of the operational satellites.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2015 Jul 26, 17:03282370.01182152522194787.0454.98177
2015 Aug 13, 22:08279060.00052151521542773.2454.99253
Beidou-3S M-2S
2015-037B
40749
in space
In-orbit validation satellite China's navigation system in MEO. Transmitted navigation signals are different from those of the operational satellites.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2015 Jul 27, 11:47280830.00632152821881780.5854.99180
2015 Jul 29, 03:08278740.00122146421528771.8954.99344
2015 Aug 07, 12:42279070.00052151421543773.2754.99264


2015-053
CZ 3B
Xichang Space Centre
2015 Sep 29, 23:13
Beidou-3S IGEO-2S
2015-053A
40938
in space
In-orbit validation satellite in China's navigation satellite system in inclined geosynchronour orbit. Transmitted navigation signals are different from those of the operational satellites.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2015 Sep 30, 13:08243890.730619235828631.7455.05180
2015 Oct 08, 12:02421580.004135606359541435.7555.0217494° east
2015 Dec 10, 00:38421610.004335601359651435.9254.9517097° east


2016-006
CZ 3C + YZ-1
Xichang Space Centre
2016 Feb 1, 07:29
Beidou-3S M-3S
2016-006A
41315
in space
In-orbit validation satellite China's navigation system in MEO. Transmitted navigation signals are different from those of the operational satellites. Separated from upper rocket stage 10:45 UTC +/-15 min.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2016 Feb 01, 14:39281250.00832151321982782.3655.00177
2016 Mar 03, 23:33279060.00012152421532773.2355.05277


2016-021
CZ 3A
Xichang Space Centre
2016 Mar 29, 20:11
Beidou-2 IGEO-6
2016-021A
41434
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from inclined geosynchronous orbit. Launch may have been delayed by ten minutes towards the end of countdown.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2016 Mar 30, 02:19243740.730319635796631.1855.04175
2016 Apr 04, 15:44421610.002535676358901435.9254.9718394° east


2016-037
CZ 3C
Xichang Space Centre
2016 Jun 12, 15:30
Beidou-2 G-7
2016-037A
41586
in space
Phase 1 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from geosynchronous orbit.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2016 Jun 12, 20:09237750.722521934574608.0519.28179
2016 Jun 23, 12:22421640.000235776357941436.031.84258144° east


2017-069
CZ 3B + YZ-1
Xichang Space Centre
2017 Nov 5, 11:45
Beidou-3 M-1
2017-069A
43001
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2017 Nov 06, 21:50281560.00862153522020783.6255.00178
2017 Nov 12, 17:05279060.00082150621549773.2355.01281
Beidou-3 M-2
2017-069B
43002
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2017 Nov 06, 16:29282460.01152154222194787.3955.00177
2017 Dec 07, 06:35279060.00072150821548773.2355.01307


2018-003
CZ 3B + YZ-1
Xichang Space Centre
2018 Jan 11, 23:18
Beidou-3 M-7
2018-003A
43107
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2018 Jan 12, 07:21282440.01162153822194787.3255.01177
2018 Feb 08, 15:43279060.00042151621540773.2355.01349
Beidou-3 M-8
2018-003B
43108
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2018 Jan 31, 19:23280260.00372154521750778.2055.00176
2018 Feb 10, 20:23279060.00052151421542773.2255.00243


2018-018
CZ 3B + YZ-1
Xichang Space Centre
2018 Feb 12, 05:03
Beidou-3 M-3
2018-018A
43207
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2018 Feb 13, 11:01282400.01172153322192787.1754.99178
2018 Feb 27, 04:06279060.00072150921547773.2254.98316
Beidou-3 M-4
2018-018B
43208
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2018 Feb 14, 13:16282460.01152154422191787.3854.98178
2018 Feb 27, 02:02279210.00082152121565773.8654.99248
2018 Feb 28, 04:17279060.00082150621551773.2454.98288


2018-085
CZ 3B
Xichang Space Centre
2018 Nov 1, 15:57
Beidou-3 G-1
2018-085A
43683
in space
Phase 2 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2018 Nov 01, 23:41243750.730818335810631.2028.45180
2018 Nov 13, 17:14421640.000035784357881436.053.07123145° east


2019-061
CZ 3B + YZ-1
Xichang Space Centre
2019 Sep 22, 21:10
Beidou-3 M-23
2019-061A
44542
in space
Phase 2 operational satellite in MEO for China's navigation satellite system. Launch was brought forward by 24 hrs to avoid forecast bad weather at the launch site.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Sep 24, 18:57282480.01152154622194787.4755.03177
2019 Oct 01, 20:30282050.01002154722108785.7155.02176
2019 Oct 26, 10:46279090.00082150821554773.3555.01312
Beidou-3 M-24
2019-061B
44543
in space
Phase 2 operational satellite in MEO for China's navigation satellite system. Launch was brought forward by 24 hrs to avoid forecast bad weather at the launch site.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Sep 24, 18:53282420.01162153522192787.2255.02177
2019 Sep 28, 18:54281540.00852153522016783.5455.02178
2019 Oct 04, 10:38279060.00072150721549773.2355.01288


2019-073
CZ 3B
Xichang Space Centre
2019 Nov 4, 17:43
Beidou-3 IGEO-3
2019-073A
44709
in space
Phase 2 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region from inclined geosynchronous orbit. Probably moved into geosynchronous drift orbit some time on Nov 5 and arrived on station shortly after. Launch completes the IGEO part of the Beidou-3 constellation.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2019 Nov 04, 23:24243840.730918435828631.5728.51180
2019 Nov 22, 20:40421590.002535675358881435.8158.70184106° east


2019-078
CZ 3B + YZ-1
Xichang Space Centre
2019 Nov 23, 00:55
Beidou-3 M-21
2019-078A
44793
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Nov 29, 05:24282470.01152154222194787.4254.99178
2019 Dec 14, 01:28281080.00662154521916781.6555.00180
2019 Dec 20, 13:59279070.00062151221545773.2655.01332
Beidou-3 M-22
2019-078B
44794
in space
Phase 2 operational satellite in MEO for China's navigation satellite system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Nov 25, 03:21282430.01162153722192787.2654.99178
2019 Dec 30, 06:01279060.00052151421542773.2255.00323


2019-090
CZ 3B + YZ-1
Xichang Space Centre
2019 Dec 16, 07:12
Beidou-3 M-19
2019-090A
44864
in space
Phase 2 operational satellite in China's navigation satellite system. One of the final pair needed to complete the Beidou-3, 24 satellite, MEO constellation.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Dec 16, 14:19282350.01192152122193786.9455.02178
2019 Dec 20, 08:42280770.00632152221877780.3655.02184
2019 Dec 24, 15:10279060.00132149121565773.2355.01255
Beidou-3 M-20
2019-090B
44865
in space
Phase 2 operational satellite in China's navigation satellite system. One of the final pair needed to complete the Beidou-3, 24 satellite, MEO constellation.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
2019 Dec 16, 13:55282390.01182152822193787.0955.01178
2019 Dec 21, 04:01281970.01022153022108785.3555.00179
2020 Jan 20, 23:24279060.00132149321563773.2355.04277


2020-017
CZ 3B
Xichang Space Centre
2020 Mar 9, 11:57
Beidou-3 G-2
2020-017A
45344
in space
Phase 2 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region. Probably moved to geosynchronous drift orbit Mar 10 and arrived on-station shortly after.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2020 Mar 09, 18:03243810.728923135775631.4528.43180
2020 Apr 01, 16:54421650.000235776357971436.083.084180° east


2020-040
CZ 3B
Xichang Space Centre
2020 Jun 23, 01:43
Beidou-3 G-3
2020-040A
45807
in space
Phase 2 operational satellite in China's navigation satellite system. It also provides time and messaging services for the Asia-Pacific region. Final satellite required to complete the Beidou system. Probably manoeuvred to geosynchronous drift orbit by Jun 25 and arrived on station by Jun 30.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
GEO    
Longitude
2020 Jun 23, 14:41243830.729521835791631.5228.42180
2020 Jul 06, 16:57421650.000535764358091436.103.08349111° east




Page date: 2011 Nov 21
Updated: 2012 Dec 31
Updated: 2016 Mar 30
Orbits updated: 2020 Jul 08

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