United States Air ForceDelta 3910Space Launch Complex 2W, Vandenberg SFB, CA, USA
IRAS
Launched
January 26, 1983
Summary
IRAS launched on an United States Air Force Delta 3910 from Space Launch Complex 2W, Vandenberg SFB, CA, USA on January 26, 1983. It was United States Air Force's 796th launch, 1st this year and humanity's 2,651st orbital launch attempt. It was the 2nd Delta 3910 flight and the 1st this year. The payload was bound for low Earth orbit (LEO). IRAS, one of 6 catalogued objects, reached a 902 × 918 km orbit inclined 99.1°. 6 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Delta 3910 · United States Air Force
- Booster
- No booster details on record.
- Mission
- Astrophysics · Low Earth Orbit (LEO)
- Milestone
- 2nd Delta 3910 flight · 1st this yearUnited States Air Force's 796th launch1st this yearhumanity's 2,651st orbital launch attempt5th orbital launch attempt this year
Flight preview
Orbit: as tracked
IRAS · NORAD 13777 · 1983-004 · Space-Track · tracking 1 of 6 objects
Show the numbers for orbit elements
- Object
- IRAS
- Object ID
- 1983-004A
- Epoch
- 1983-01-26 10:09:46 UTC
- Mean motion
- 13.97401619 rev/day
- Eccentricity
- 0.0011424
- Inclination
- 99.1034°
- Ascending node
- 213.4668°
- Arg. of perigee
- 244.247°
- Mean anomaly
- 107.9956°
- Element set
- 999
- Rev at epoch
- 3
- 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
6 catalogued: 1 payload, 1 rocket stage, 3 debris, 1 component; 3 still in orbit
- IRAS · NORAD 13777 · in orbit
Delta 166 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Astronomy satellite dedicated to infrared full-sky surveying
Pad

Space Launch Complex 2W, Vandenberg SFB, CA, USA
44th launch from Space Launch Complex 2W, 1st this year · 498th from Vandenberg SFB, CA, USA
99 launches from this pad · 919 from Vandenberg SFB, CA, USA
193 days after the previous launch from this pad
Questions
When did IRAS launch?
IRAS launched on January 26, 1983. The time is known to the hour, not the minute.
Where can I watch IRAS?
No webcast is on record for this launch.
What rocket launched IRAS?
Delta 3910, flown by United States Air Force. Delta 3910 spec sheet
Where did IRAS launch from?
Space Launch Complex 2W, Vandenberg SFB, CA, USA.
What orbit did IRAS reach?
IRAS, one of 6 catalogued objects, reached a 902 × 918 km orbit inclined 99.1°.
How many satellites did IRAS launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] Delta 3910 - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fdelta_3910_image_20231231105538.jpeg&w=1600)