Spin Axis Determination of Defunct GLONASS Satellites Using Photometry Observation
GLONASS, a satellite navigation system developed in Russia since 1976, is defunct and orbits in an unstable attitude. The satellites in these problems are not managed and there is no precise information, which can increase the risk of collisions with other space objects. In this study, detailed at...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2021-03-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: |
| Summary: | GLONASS, a satellite navigation system developed in Russia since 1976, is defunct and orbits in an unstable attitude. The
satellites in these problems are not managed and there is no precise information, which can increase the risk of collisions with
other space objects. In this study, detailed attitude dynamic have to be analyzed through photometry data, which requires spin
period and spin axis. The light curve data is obtained by observing through the photometer at the Graz station and the power
spectrum is calculated to obtain the cycle of the satellite. The geometric relationship between observer and sun is analyzed for
GLONASS-50 satellite. The box-wing model is applied to obtain the phase reflection of the satellite and obtain the Irradiation
of the satellite through this information. In Light Curve and Irradiation, the spin axis is calculated for each peak points with the
distance square minimum technique. The spin axis of the GLONASS-50 satellite is RA = 116°, Dec = 92°. |
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| ISSN: | 2093-5587 2093-1409 |