Orbital Sciences CorporationPegasus XL HAPSVandenberg Space Force Base, Air launch to orbit
MUBLCOM & TERRIERS
Launched
May 18, 1999
Image: NASA/Laurie Losey
Summary
TERRIERS & MUBLCOM launched on an Orbital Sciences Corporation Pegasus XL HAPS from Vandenberg Space Force Base, Air launch to orbit on May 18, 1999. It was Orbital Sciences Corporation's 30th launch, 2nd this year and humanity's 4,316th orbital launch attempt. It was the 4th Pegasus XL HAPS flight and the 1st this year. The payload was bound for Sun-Synchronous Orbit (SSO). TERRIERS, one of 5 catalogued objects, reached a 547 × 560 km orbit inclined 97.7°. 5 objects from this launch are catalogued, 2 of them payloads.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Technology · Sun-Synchronous Orbit (SSO)
- Milestone
- 4th Pegasus XL HAPS flight · 1st this yearOrbital Sciences Corporation's 30th launch2nd this yearhumanity's 4,316th orbital launch attempt27th orbital launch attempt this year
Flight preview
Orbit: as tracked
TERRIERS · NORAD 25735 · 1999-026 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- TERRIERS
- Object ID
- 1999-026A
- Epoch
- 1999-05-18 07:46:21 UTC
- Mean motion
- 15.06556948 rev/day
- Eccentricity
- 0.0009302
- Inclination
- 97.7188°
- Ascending node
- 5.476°
- Arg. of perigee
- 270.9439°
- Mean anomaly
- 89.0722°
- Element set
- 999
- Rev at epoch
- 2
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: SSO. Ascent drawn from padside's representative profile.
Catalogued objects
5 catalogued: 2 payloads, 2 rocket stages, 1 component
- TERRIERS · NORAD 25735 · re-entered October 21, 2023
- MUBLCOM · NORAD 25736
Pegasus F27 Stage 3 · re-entered September 24, 2000
Pegasus F27 Stage 4 · re-entered October 31, 2001
Data from J. McDowell, planet4589.org
About this launch
A dual launch carrying TERRIERS, a Boston University student-built NASA ionospheric research satellite that failed shortly after reaching orbit, and MUBLCOM, a DARPA demonstration of a space-based communications relay that later served as the target for NASA's DART rendezvous mission.
Pad
Vandenberg Space Force Base, Air launch to orbit
13th launch from Vandenberg Space Force Base, 2nd this year · 26th from Air launch to orbit
22 launches from this pad · 52 from Air launch to orbit
74 days after the previous launch from this pad
Questions
When did TERRIERS & MUBLCOM launch?
TERRIERS & MUBLCOM launched on May 18, 1999. The time is known to the hour, not the minute.
Where can I watch TERRIERS & MUBLCOM?
No webcast is on record for this launch.
What rocket launched TERRIERS & MUBLCOM?
Pegasus XL HAPS, flown by Orbital Sciences Corporation. Pegasus XL HAPS spec sheet
Where did TERRIERS & MUBLCOM launch from?
Vandenberg Space Force Base, Air launch to orbit.
What orbit did TERRIERS & MUBLCOM reach?
TERRIERS, one of 5 catalogued objects, reached a 547 × 560 km orbit inclined 97.7°.
How many satellites did TERRIERS & MUBLCOM launch?
2 payloads from this launch are catalogued (Data from J. McDowell, planet4589.org).