1996-013A
The Polar Plasma Laboratory, POLAR, satellite was similar in design to Wind and was also build by Lockheed Martin Astro Space. It was launched in Feb 1996 from Space Launch Complex 2-West at Vandenberg. Polar is 2.1m high and 2.4m in diameter, and is spin stabilized. It is 1005 kg dry with 269 kg of propellant. It has two 6-m booms which deploy from its equator, carrying PWI and MFE. Six wire antennae also deployed. The EFI antennae along the spin axis are 14 meters tip to tip; the two orthogonal pairs of antennae in the equatorial plane are 130 m and 100 m tip to tip.
The PIXIE auroral X-ray imager also was able to observe celestial X-ray sources in its field of view, and monitored Cir X-1. In 1998 it observed the transient source XTE J1550-564 which was brighter than the aurora.
| Polar | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1996 Feb 24 | 1124:00 | Launch by Delta 7925-10 | V SLC2W |
| T+1:28 SRM 1-6 sep at 27 km 0.969 km/s | -6330? x 33? | ||
| T+2:11 SRM 7-9 sep at 53 km 2.012 km/s | -6180 x 65? | ||
| T+4:20 MECO 116 km | |||
| T+4:34 SES-1 125 km 5.584 km/s | -4250? x 170? | ||
| T+4:40 Fairing 128km 5.600 km/s | -4200 x 180? | ||
| 1135:12 | T+11:12 SECO-1 179 km | 157 x 280 x 86.0 | |
| 1201:05 | T+37:05 SES-2 199 km | ||
| 1201:29 | T+37:29 SECO-2 | 176 x 910 km x 86.0 | |
| 1202:59 | T+38:59 TES | ||
| 1204:26 | T+40:26 TECO | ||
| NCS blowdown | |||
| 1206:19 | T+42:19 Stage 3 sep | 185 x 50550 x 86.0 | |
| 1337? | Delta depletion | 182 x 913 x 85.9 | |
| 1996 Feb 25 | 939.22 187 x 50594 x 86.0 | ||
| 1996 Feb 28? | Raise perigee | ||
| 1996 Mar | U and V axes to 20 m | ||
| 1996 Mar 4 | Four EFI radial wire hats jettisoned | ||
| 1996 Mar 4 | U axis wires to 35m length | ||
| 1996 Mar 4 | LDB booms deployed | ||
| 1996 Mar 9 | 1051.45 5141 x 50605 x 85.9 | ||
| 1996 Jun 20 | 1053.43 5373 x 50465 x 86.1 | ||
| 1996 Aug 21 | 1053.59 5393 x 50447 x 86.1 | ||
| 1997 Apr 28 | Trim | 1061.41 5724 x 50455 x 86.4 | |
| 1997 Nov 17 | Trim | 1065.40 5620 x 50731 x 86.4 | |
| 1998 May 18 | Trim | 1070.14 5483 x 51073 x 86.2 | |
| 1999 Apr 21 | Trim | 1076.21 4755 x 52063 x 85.4 | |
| 1999 Nov 29 | Trim | 1080.03 4421 x 52561 x 85.1 | |
| 2002 Apr 10 | 1098.68 3082 x 54701 x 82.5 | ||
| 2003 Apr 4 | Trim | 1102.83 3193 x 54767 x 82.3 | |
| 2004 Nov 26 | 1102.96 4065 x 53902 x 83.4 | ||
| 2008 Apr 29 | Decommissioned | ||
Payload:
- PWI Plasma Wave Investigation (on side boom)
- MFE Magnetic Fields Experiment (on side boom)
- EFI Electric fields instrument (on spin axis booms).
- CEPPAD Comprehensive energetic particle pitch angle distribution
- PIXIE Polar Ionospheric X-ray Imaging Experiment;uses movable pinhole camera mask and positional Ar/Xe prop. ctr. with 0.5 deg resolution and 40 deg FOV, 3-60 keV.
- FPA Fast Plasma Analyser
- VIS Visible Imaging System
- TID Thermal Ion Dynamics Experiment/Plasma Source Instrument
- UVI Ultraviolet imager. f/3 camera, 8 deg FOV. MCP + CCD.
- TIMAS Toroidal Imaging Mass Angle Spectrograph
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