Orbital Sciences CorporationPegasus XL HAPSWallops Flight Facility, Air launch to orbit
Orbcomm-D2 - D8
Launched
December 4, 1999
Image: NASA/Laurie Losey
Summary
Orbcomm D2-D8 launched on an Orbital Sciences Corporation Pegasus XL HAPS from Wallops Flight Facility, Air launch to orbit on December 4, 1999. It was Orbital Sciences Corporation's 31st launch, 3rd this year and humanity's 4,358th orbital launch attempt. It was the 5th Pegasus XL HAPS flight and the 2nd this year. The payload was bound for low Earth orbit (LEO). Orbcomm D2, one of 18 catalogued objects, reached a 441 × 1,382 km orbit inclined 46.2°. 18 objects from this launch are catalogued, 7 of them payloads.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Communications · Low Earth Orbit (LEO)
- Milestone
- 5th Pegasus XL HAPS flight · 2nd this yearOrbital Sciences Corporation's 31st launch3rd this yearhumanity's 4,358th orbital launch attempt69th orbital launch attempt this year
Flight preview
Orbit: as tracked
Orbcomm D2 · NORAD 25980 · 1999-065 · Space-Track · tracking 1 of 18 objects
Show the numbers for orbit elements
- Object
- ORBCOMM FM 30
- Object ID
- 1999-065A
- Epoch
- 1999-12-04 18:25:32 UTC
- Mean motion
- 13.96997344 rev/day
- Eccentricity
- 0.0646546
- Inclination
- 46.2154°
- Ascending node
- 153.7935°
- Arg. of perigee
- 136.6639°
- Mean anomaly
- 236.2407°
- 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
18 catalogued: 7 payloads, 2 rocket stages, 9 debris; 7 still in orbit
- Orbcomm D2 · NORAD 25980 · in orbit
- Orbcomm D3 · NORAD 25981 · in orbit
- Orbcomm D4 · NORAD 25982 · in orbit
- Orbcomm D5 · NORAD 25983 · in orbit
- Orbcomm D8 · NORAD 25984 · broke up March 11, 2023
- Orbcomm D7 · NORAD 25985 · in orbit
- Orbcomm D6 · NORAD 25986 · in orbit
Pegasus F28 Stage 3 · re-entered April 19, 2002
Pegasus F28 Stage 4 · re-entered February 1, 2002
Data from J. McDowell, planet4589.org
About this launch
Seven Orbcomm data-messaging satellites launched together to expand Orbcomm's low Earth orbit machine-to-machine communications constellation.
Pad
Wallops Flight Facility, Air launch to orbit
6th launch from Wallops Flight Facility, 1st this year · 27th from Air launch to orbit
6 launches from this pad · 52 from Air launch to orbit
437 days after the previous launch from this pad
Questions
When did Orbcomm D2-D8 launch?
Orbcomm D2-D8 launched on December 4, 1999. The time is known to the hour, not the minute.
Where can I watch Orbcomm D2-D8?
No webcast is on record for this launch.
What rocket launched Orbcomm D2-D8?
Pegasus XL HAPS, flown by Orbital Sciences Corporation. Pegasus XL HAPS spec sheet
Where did Orbcomm D2-D8 launch from?
Wallops Flight Facility, Air launch to orbit.
What orbit did Orbcomm D2-D8 reach?
Orbcomm D2, one of 18 catalogued objects, reached a 441 × 1,382 km orbit inclined 46.2°.
How many satellites did Orbcomm D2-D8 launch?
7 payloads from this launch are catalogued, 6 of them still in orbit (Data from J. McDowell, planet4589.org).