Zarya - Soviet, Russian and International Spaceflight
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Launches and Orbital Operations


Tyneside, UK
2017 Sep 20
Wednesday, Day 263

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Primary source of unclassified orbital elements

Orbital elements based on amateur observations

1961 - Launches to Orbit and Beyond

Listed are all launches, irrespective of outcome, that were irretrievably committed to flight towards orbit or intended to accelerate the payload to escape velocity.

Launch times are in UTC and are from the launching agency or estimated by 'walking back' along the ground track to the launch site. The PRIME source of orbit data and decay information is SpaceTrack. A minority of orbits is based on amateur observations using visual and radio techniques. Occasionally, early orbit data are published by satellite owners and may cover periods before SpaceTrack lists a new object. In extreme cases, orbits are estimated from public data.

Apogee and perigee are measured against the Earth's mean equatorial radius - 6378.145 km. Care should be exercised when comparing with other published orbits even when the source is shown as SpaceTrack.

Web sites may link to specific launches by pointing to the page URL followed by the three digit launch number, eg - http://www.zarya.info/Diaries/Launches/Launches.php?year=1961#001


1961-001
Atlas Agena A
Point Arguello, California, USA
1961 Jan 31, 20:21
SAMOS 2 (E1-2)
1961 α 1
70
Re-entered 1973 Oct 21
Satellite And Missile Obervation System - photographic reconnaissance satellite using TV relay.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 2, 03:2768920.005847555494.9197.40191


1961-002
Molniya 8K78
Baikonur Cosmodrome, Kazakhstan
1961 Feb 4, 01:18
Venera (1VA № 1)
1961 β 1
71
Re-entered 1961 Feb 26
Combined Venus exploration craft and final rocket stage, left in LEO when the rocket stage failed to fire. The Spacecraft remained attached to the rocket. Catalogued by NORAD as Sputnik 7.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 5, 11:3966450.007022031389.8465.1027


1961-003
Molniya 8K78
Baikonur Cosmodrome, Kazakhstan
1961 Feb 12, 00:34
Venera (1VA № 2)
1961 γ1
80
in space
Venus exploration spacecraft. It passed close to Venus around 1961 Jun 2 but radio communication had ceased 1961 Feb 17.
In heliocentric orbit


1961-004
Scout X-1
Wallops Flight Facility, Virginia, USA
1961 Feb 16, 13:05
Explorer 9 (S-56A)
1961 δ 1
81
Re-entered 1964 Apr 9
Science satellite for atmospheric density measurements- part of the payload was a 4m diameter balloon. Replacement for satellite lost 1960 Dec 4.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 16, 14:4279920.12246362592118.5038.6399


1961-005
Thor Agena B
Vandenberg AFB, California, USA
1961 Feb 17, 20:25
Discoverer 20 (Corona 9014A/KH-5)
1961 ε 1
83
Re-entered 1962 Jul 28
US film recovery reconnaissance satellite. Re-entry vehicle did not separate.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 18, 05:2569140.036428478795.3580.91124


1961-006
Thor Agena B
Vandenberg AFB, California, USA
1961 Feb 18, 22:58
Discoverer 21 (Corona RM-2)
1961 ζ 1
84
Re-entered 1962 Apr 20
Instrumented Agena-B rocket stage testing sensors for the MIDAS missile early warning satellite programme. Also used to demonstrate the Agena re-start capability.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 18, 23:5870320.0589239106897.8180.74141


1961-007
Thor Ablestar
Cape Canaveral AFS, Florida, USA
1961 Feb 22, 03:45
Transit 3B/LOFTI
1961 η 1
87
Re-entered 1961 Mar 30
Experimental navigation satellite. The LOFTI (Low Frequency Trans-Ionospheric) satellite failed to separate from Transit. It was used for experiments in the possibility of using LF radio to communicate with submerged submarines but two of the LF aerials could not be deployed.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Feb 22, 05:0369650.057118998496.4128.3833


Failed to reach orbit
Juno II
Cape Canaveral AFS, Florida, USA
1961 Feb 25, 00:13
Explorer (S-45)
Science satellite for ionosphere research. Lost when the launch vehicle failed.


1961-008
Vostok 8K72K
Baikonur Cosmodrome, Kazakhstan
1961 Mar 9, 06:29
Korabl Sputnik 4 (Vostok-3 №1)
1961 θ 1
91
Re-entered 1961 Mar 9
Recovered
Carried a dog - Chernushka, and the instrumented mannequin 'Ivan Ivanovich' plus other biological specimens. The mannequin was ejected from the capsule and landed by parachute. Chernushka landed inside the cabin.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Mar 9, 07:4865450.007012121387.8364.9395


1961-009
Vostok 8K72K
Baikonur Cosmodrome, Kazakhstan
1961 Mar 25, 05:54
Korabl Sputnik 5 (Vostok-3 №2)
1961 ι 1
95
Re-entered 1961 Mar 25
Recovered
Carried a dog - Zvezdochka, and the instrumented mannequin 'Ivan Ivanovich' on it's second flight. The mannequin was ejected from the capsule and landed by parachute. Zvezdochka landed inside the cabin.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Mar 25, 05:5365740.005016322988.4264.9060


1961-010
Thor Delta
Cape Canaveral AFS, Florida, USA
1961 Mar 25, 15:17
Explorer 10 (P-14)
1961 κ 1
98
Re-entered 1961 Jun 30
Science satellite to investigate the magnetic field between the Earth and Moon. Barycentric trajectory equated to an orbit approx 150 x 215,000 km at 32° inclination.
In barycentric orbit


Failed to reach orbit
Thor Agena B
Vandenberg AFB, California, USA
1961 Mar 30, 20:34
Discoverer 22 (Corona 9015/KH-2)
US film recovery reconnaissance satellite. Satellite lost when upper stage of the launch vehicle failed.


1961-011
Thor Agena B
Vandenberg AFB, California, USA
1961 Apr 8, 19:21
Discoverer 23 (Corona 9016A/KH-5)
1961 λ 1
100
Re-entered 1962 Apr 16
US film recovery reconnaissance satellite. Re-entry vehicle boosted to a higher orbit when stabilisation of the main vehicle failed.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Apr 8, 23:3068500.025829564894.0382.31168


1961-012
Vostok 8K72K
Baikonur Cosmodrome, Kazakhstan
1961 Apr 12, 06:07
Vostok (Vostok-3A №3)
1961 μ 1
103
Re-entered 1961 Apr 12
Recovered
First piloted spaceflight for a single orbit of the Earth - carried Yuri Gagarin. Retro fire came 1961 Apr 12, 07:25 UTC. After re-entry, Gagarin was ejected from the cabin and landed under a separate parchute. The cabin used its own parachute system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Apr 12, 06:0066190.011016831489.3364.9560


Failed to reach orbit
Atlas D
Cape Canaveral AFS, Florida, USA
1961 Apr 25, 16:15
Mercury (MA-3)
Single orbit mission of the Mercury spacecraft to verify the launching system and the retro-fire, re-entry and recovery sequence. It failed when Range Safety destroyed the launch vehicle but the Mercury Launch Escape System meant that the spacecraft was recovered intact.


1961-013
Juno II
Cape Canaveral AFS, Florida, USA
1961 Apr 27, 14:16
Explorer 11 (S-15)
1961 ν 1
107
in space
Science satellite for Gamma ray astronomy.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Apr 28, 07:5375140.08465011772108.0428.80125


Failed to reach orbit
Juno II
Cape Canaveral AFS, Florida, USA
1961 May 24, 19:48
Explorer (S-45A)
Science satellite for ionosphere research. Lost when the launch vehicle failed.


Failed to reach orbit
Thor Agena B
Vandenberg AFB, California, USA
1961 Jun 8, 21:16
Discoverer 24 (Corona 9018A/KH-5)
US film recovery reconnaissance satellite. Lost when launch vehicle failed.


1961-014
Thor Agena B
Vandenberg AFB, California, USA
1961 Jun 16, 23:02
Discoverer 25 (Corona 9017/KH-2)
1961 ξ 1
108
Re-entered 1961 Jul 12
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1961 Jun 18.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Jun 17, 03:0366920.013622340590.8182.11178


1961-015
Thor Ablestar
Cape Canaveral AFS, Florida, USA
1961 Jun 29, 04:22
Transit 4A
1961 ο 1
116
in space
Navigation satellite. First satellite to carry a nuclear power source.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Jul 9, 06:0073170.0080880998103.8266.81289
GRAB 3/Injun 1
1961 ο 2
117
in space
Pair of satellites that separated from Transit 4A but not from each other. GRAB 3 was a US Naval Laboratory satellite with a SIGINT mission. Injun was a USN satellite investigating radiation in the magnetosphere.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Jul 6, 08:4773180.0078882997103.8366.82288


Failed to reach orbit
Scout X-1
Wallops Flight Facility, Virginia, USA
1961 Jun 30, 17:09
Explorer (S-55)
Science satellite launched to evaluate the Scout launch vehicle and to investigate micrometeoroids. It was lost when the launch vehicle third stage failed to ignite.


1961-016
Thor Agena B
Vandenberg AFB, California, USA
1961 Jul 7, 23:29
Discoverer 26 (Corona 9019/KH-2)
1961 π 1
160
Re-entered 1961 Dec 5
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1960 Jul 10.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Jul 8, 08:2668950.041722980494.9682.94160


1961-017
Thor Delta
Cape Canaveral AFS, Florida, USA
1961 Jul 12, 10:25
TIROS 3
1961 ρ 1
162
in space
Television Infrared Observation Satellite meteorological satellite for obtaining TV images of cloud patterns.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
desc node
local time
1961 Jul 15, 13:3471560.0061735822100.4147.905413:59


1961-018
Atlas Agena B
Point Arguello, California, USA
1961 Jul 12, 15:11
MIDAS 3
1961 σ 1
163
in space
Satellite of the Missile Defense and Early Warning System equipped with infrared sensors and intended to work in conjunction with the land-based BMEWS system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Jul 15, 22:3298230.002034263464161.4991.17342


Failed to reach orbit
Thor Agena B
Vandenberg AFB, California, USA
1961 Jul 21, 22:35
Discoverer 27 (Corona 9020A/KH-5)
US film recovery reconnaissance satellite. Lost when Range Safety destroyed the launch vehicle soon after lift-off.


Failed to reach orbit
Thor Agena B
Vandenberg AFB, California, USA
1961 Aug 4, 00:01
Discoverer 28 (Corona 9021/KH-2)
US film recovery reconnaissance satellite. Satellite lost when upper stage of the launch vehicle failed.


1961-019
Vostok 8K72K
Baikonur Cosmodrome, Kazakhstan
1961 Aug 6, 06:00
Vostok 2 (Vostok-3A №4)
1961 τ 1
168
Re-entered 1961 Aug 7
Recovered
Second piloted orbital mission of the Vostok - carried Gherman Titov on a one day flight.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Aug 6, 14:4365740.003417321888.4064.8726


1961-020
Thor Delta
Cape Canaveral AFS, Florida, USA
1961 Aug 16, 03:21
Explorer 12 (EPE-A/S-3)
1961 υ 1
170
Re-entered 1963 Sep 30
Science satellite researching energetic particles in near-Earth space.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Sep 20, 08:07451920.8487457771701593.5033.43160


1961-021
Atlas Agena B
Cape Canaveral AFS, Florida, USA
1961 Aug 23, 10:04
Ranger 1 (P-32/RA-1)
1961 φ 1
173
Re-entered 1961 Aug 30
Sytems test of a hard-impact lunar photographic spacececraft. The intention was to enter a highly elliptical orbit with apogee around 500,000 km, followed by re-entry into the atmosphere after about 50 days. It failed when the Agena upper stage shut down immediately on commencing its second burn, leaving the vehcle in LEO.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Aug 23, 11:0767170.024817250691.3132.93199


1961-022
Scout X-1
Wallops Flight Facility, Virginia, USA
1961 Aug 25, 18:29
Explorer 13 (S-55A)
1961 χ 1
180
Re-entered 1961 Aug 28
Science satellite for micrometeoroid research.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Aug 26, 18:1369660.032036581096.4336.42275


1961-023
Thor Agena B
Vandenberg AFB, California, USA
1961 Aug 30, 20:00
Discoverer 29 (Corona 9023/KH-3)
1961 ψ 1
181
Re-entered 1961 Sep 10
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1961 Sep 1 - all film frames were found to be out of focus.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Aug 31, 07:4167240.029214954291.4582.1483


Failed to reach orbit
Atlas Agena B
Point Arguello, California, USA
1961 Sep 9, 19:28
SAMOS 3 (E2-1)
Satellite And Missile Obervation System - photographic reconnaissance satellite intended to return film in a re-entry vehicle. Lost when the launch vehicle exploded on the pad.


1961-024
Thor Agena B
Vandenberg AFB, California, USA
1961 Sep 12, 19:59
Discoverer 30 (Corona 9022/KH-3)
1961 ω 1
182
Re-entered 1961 Dec 11
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1961 Sep 1 - all film frames were found to be out of focus (similar to Discoverer 29).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Sep 13, 13:5667670.025022055892.3482.58142


1961-025
Atlas D
Cape Canaveral AFS, Florida, USA
1961 Sep 13, 14:04
Mercury (MA-4)
1961 αα1
183
Re-entered 1961 Sep 13
Recovered
Single orbit mission of the Mercury spacecraft to verify the launching system and the retro-fire, re-entry and recovery sequence. Mission successful - Mercury spacecraft recovered after 109 minutes, at the end of a single circuit of the Earth.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Sep 13, 14:0965730.007014924188.4032.5470


1961-026
Thor Agena B
Vandenberg AFB, California, USA
1961 Sep 17, 21:00
Discoverer 31 (Corona 9024/KH-3)
1961 αβ1
186
Re-entered 1961 Oct 26
US film recovery reconnaissance satellite. Re-entry vehicle not released due to a power failure 1961 Sep 9.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Sep 18, 07:0466960.012723340390.8982.70146


1961-027
Thor Agena B
Vandenberg AFB, California, USA
1961 Oct 13, 19:22
Discoverer 32 (Corona 9025/KH-3)
1961 αγ1
189
Re-entered 1961 Nov 13
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1961 Oct 14 - most film frames were found to be out of focus (as with both previous missions).

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Oct 14, 02:2466910.011823439290.7881.69158


1961-028
Atlas Agena B
Point Arguello, California, USA
1961 Oct 21, 13:53
MIDAS 4
1961 αδ1
192
in space
Experimental satellite of the Missile Defense and Early Warning System equipped with infrared sensors and intended to work in conjunction with the land-based BMEWS system.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
desc node
local time
1961 Dec 17, 00:11100040.012235043748165.9695.9033402:51


Failed to reach orbit
Thor Agena B
Vandenberg AFB, California, USA
1961 Oct 23, 19:23
Discoverer 33 (Corona 9026/KH-3)
US film recovery reconnaissance satellite. Satellite was lost when the launch vehicle failed.


Failed to reach orbit
Cosmos 63S1
Kapustin Yar Cosmodrome, Volgograd Region, Russia
1961 Oct 27, 16:30
Cosmos (DS-1 № 1)
Technology test satellite. Lost when the launch vehicle failed to reach orbital velocity.


Failed to reach orbit
Blue Scout II
Cape Canaveral AFS, Florida, USA
1961 Nov 1, 15:32
Mercury-Scout 1
Small satellite to be used in testing the Project Mercury communications networ. Lost when the launch vehicle broke up after 26s.


1961-029
Thor Agena B
Vandenberg AFB, California, USA
1961 Nov 5, 20:00
Discoverer 34 (Corona 9027/KH-3)
1961 αε1
197
Re-entered 1962 Dec 7
US film recovery reconnaissance satellite. Guidance error at launch meant the orbit was too elliptical and re-entry vehicle recovery was not attempted.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 7, 21:3669940.0558226100697.0182.52145


1961-030
Thor Agena B
Vandenberg AFB, California, USA
1961 Nov 15, 21:23
Discoverer 35 (Corona 9028/KH-3)
1961 αζ1
201
Re-entered 1961 Dec 3
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle recovered 1961 Nov 16. Designation and catalogue number are out of sequence.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 16, 04:2066470.005423330489.8981.63140


1961-031
Thor Ablestar
Cape Canaveral AFS, Florida, USA
1961 Nov 15, 22:26
Transit 4B
1961 αη1
202
in space
Navigation satellite with nuclear power source. Sustained damage from the electromagnetic pulse associated with the US "Starfish" high altitude nuclear test 1963 Jul 9. Designation and catalogue number are out of sequence.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 19, 13:5374090.01299361127105.7932.421
Traac
1961 αη2
205
in space
Tethered satellite experiment - the main body was attached to a mass at the end of a boom and a spring wire. Also carried detectors to measure protons and heavier particles in the van Allen Radiation Belt.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 22, 12:2074100.01319351129105.8032.4325


1961-032
Atlas Agena B
Cape Canaveral AFS, Florida, USA
1961 Nov 18, 08:12
Ranger 2 (P-33/RA-2)
1961 αθ
206
Re-entered 1961 Nov 20
Sytems test of a hard-impact lunar photographic spacececraft. The intention was to enter a highly elliptical orbit with apogee around 500,000 km. It failed when the Agena failed to ignite for its second burn, leaving the vehcle in LEO.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 18, 09:1565760.007314924688.4533.3449


Failed to reach orbit
Atlas Agena B
Point Arguello, California, USA
1961 Nov 22, 20:45
SAMOS 4 (E5-1)
Satellite And Missile Obervation System - photographic reconnaissance satellite intended to return film in a re-entry vehicle. Lost when the Agena stage failed to ignite.


1961-033
Atlas D
Cape Canaveral AFS, Florida, USA
1961 Nov 29, 15:07
Mercury (MA-5)
1961 αι1
208
Re-entered 1961 Nov 29
Recovered
Intended three orbit mission of the Mercury spacecraft carrying the chimpanzee "Enos". Recovered early after two circuits, because of problems with the attitude control system. Landed 10:28 UTC in the Atlantic Ocean off Florida.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Nov 29, 15:1265760.006115823888.4532.6370


Failed to reach orbit
Vostok 8K72K
Baikonur Cosmodrome, Kazakhstan
1961 Dec 11, 09:39
Cosmos (Zenit-2 11Ф61 № 1)
Protoype recoverable photo-reconnaissance satellite - failed to reach orbit when the upper stage cutoff prematurely and the spacecraft destruct system fired at T+407 seconds. The descent module reportedly landed in Siberia but was never found.


1961-034
Thor Agena B
Vandenberg AFB, California, USA
1961 Dec 12, 20:40
Discoverer 36 (Corona 9029/KH-3)
1961 ακ1
213
Re-entered 1962 Mar 8
Recovered
US film recovery reconnaissance satellite. Re-entry vehicle re-entered 1961 Dec 16 but the mid-air snatch was missed and it was kept afloat for several hours by frogmen.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Dec 13, 17:3367400.018723548891.7881.21138
OSCAR 1
1961 ακ2
214
in space
Orbiting Satellite Carrying Amateur Radio. First amateur radio satellite - transmitted the letters "HI" in morse code at an amateur frequency near 145 MHz for a period of 20 days.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Dec 15, 13:5567350.018123547991.6981.21131


Failed to reach orbit
Cosmos 63S1
Kapustin Yar Cosmodrome, Volgograd Region, Russia
1961 Dec 21, 12:30
Cosmos (DS-1 № 2)
Developmental satellite. Lost when the launch vehicle second stage failed to ignite.


1961-035
Atlas Agena B
Point Arguello, California, USA
1961 Dec 22, 19:12
SAMOS 5 (E5-2)
1961 αλ2
218
Re-entered 1961 Dec 31
Satellite And Missile Obervation System - photographic reconnaissance satellite intended to return film in a re-entry vehicle. Retro-fire failed and the satellite eventually decayed naturally.

epoch (UTC)         
s-m axis
( km )
ecc    perigee
( km )
apogee
( km )
period
( min )
incl 
( ° )
ω  
( ° )
1961 Dec 25, 21:5466190.008018829489.3289.6111


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