Soviet Space ProgramVostok 8A92M31/6, Baikonur Cosmodrome, Republic of Kazakhstan
IRS-1B
Launched
August 29, 1991
Image: Dmitry Ivanov
Summary
IRS-1B launched on a Soviet Space Program Vostok 8A92M from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on August 29, 1991. It was Soviet Space Program's 2,438th launch, 43rd this year and humanity's 3,660th orbital launch attempt. It was the 93rd Vostok 8A92M flight and the 1st this year. The payload was bound for low Earth orbit (LEO). IRS-1B, one of 2 catalogued objects, reached a 873 × 900 km orbit inclined 99.3°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Vostok 8A92M · Soviet Space Program
- Booster
- No booster details on record.
- Mission
- Earth Science · Low Earth Orbit (LEO)
- Milestone
- 93rd Vostok 8A92M flight · 1st this yearSoviet Space Program's 2,438th launch43rd this yearhumanity's 3,660th orbital launch attempt63rd orbital launch attempt this year
Flight preview
Orbit: as tracked
IRS-1B · NORAD 21688 · 1991-061 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- IRS 1B
- Object ID
- 1991-061A
- Epoch
- 1991-08-29 07:59:19 UTC
- Mean motion
- 14.04227603 rev/day
- Eccentricity
- 0.0018803
- Inclination
- 99.2656°
- Ascending node
- 314.6°
- Arg. of perigee
- 16.5384°
- Mean anomaly
- 344.0178°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage; 2 still in orbit
- IRS-1B · NORAD 21688 · in orbit
Vostok-2M (N94) Stage 3 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Indian remote sensing satellite
Pad
31/6, Baikonur Cosmodrome, Republic of Kazakhstan
308th launch from 31/6, 2nd this year · 966th from Baikonur Cosmodrome, Republic of Kazakhstan
430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan
49 days after the previous launch from this pad
All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps
Questions
When did IRS-1B launch?
IRS-1B launched on August 29, 1991. The time is known to the hour, not the minute.
Where can I watch IRS-1B?
No webcast is on record for this launch.
What rocket launched IRS-1B?
Vostok 8A92M, flown by Soviet Space Program. Vostok 8A92M spec sheet
Where did IRS-1B launch from?
31/6, Baikonur Cosmodrome, Republic of Kazakhstan.
What orbit did IRS-1B reach?
IRS-1B, one of 2 catalogued objects, reached a 873 × 900 km orbit inclined 99.3°.
How many satellites did IRS-1B launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).