Photographic and Radiometric Observations of the HAYABUSA Re-Entry
We analyzed photographic observations of the re-entry of the HAYABUSA spacecraft and capsule over Southern Australia on 2010 June 13, 13:52 UT. Radiometric measurements of the brightness of the associated fireball were obtained as well. We derived the trajectories and velocities of the spacecraft, i...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Nihon Tenmon Gakkai
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/36289 |
| _version_ | 1848754727072825344 |
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| author | Borovicka, J. Abe, S. Shrbený, L. Spurney, P. Bland, Phil |
| author_facet | Borovicka, J. Abe, S. Shrbený, L. Spurney, P. Bland, Phil |
| author_sort | Borovicka, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We analyzed photographic observations of the re-entry of the HAYABUSA spacecraft and capsule over Southern Australia on 2010 June 13, 13:52 UT. Radiometric measurements of the brightness of the associated fireball were obtained as well. We derived the trajectories and velocities of the spacecraft, its four fragments, and the capsule. The capsule trajectory was within a few hundred meters of the trajectory predicted by JAXA prior to re-entry. The spacecraft trajectory was about 1 km higher than the capsule trajectory. Two major fragments separated from the spacecraft at a height of about 62 km with a mutual lateral velocity of 250 m s −1 . The maximum absolute magnitude of the fireball of − 12.6 was reached at a height of 67 km. The dynamic pressures acting on the spacecraft at the fragmentation points were only 1–50 kPa. No spacecraft fragment was seen to survive below a height of 47 km. The integral luminous efficiency of the event was 1.3%. As expected, the capsule had a very low luminous efficiency and very low ablation coefficient. The ablation coefficients and masses of the major spacecraft fragments are discussed. |
| first_indexed | 2025-11-14T08:45:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-36289 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:45:00Z |
| publishDate | 2011 |
| publisher | Nihon Tenmon Gakkai |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-362892017-09-13T15:22:42Z Photographic and Radiometric Observations of the HAYABUSA Re-Entry Borovicka, J. Abe, S. Shrbený, L. Spurney, P. Bland, Phil meteors meteorites astrometry space vehicles: individual (HAYABUSA) meteoroids We analyzed photographic observations of the re-entry of the HAYABUSA spacecraft and capsule over Southern Australia on 2010 June 13, 13:52 UT. Radiometric measurements of the brightness of the associated fireball were obtained as well. We derived the trajectories and velocities of the spacecraft, its four fragments, and the capsule. The capsule trajectory was within a few hundred meters of the trajectory predicted by JAXA prior to re-entry. The spacecraft trajectory was about 1 km higher than the capsule trajectory. Two major fragments separated from the spacecraft at a height of about 62 km with a mutual lateral velocity of 250 m s −1 . The maximum absolute magnitude of the fireball of − 12.6 was reached at a height of 67 km. The dynamic pressures acting on the spacecraft at the fragmentation points were only 1–50 kPa. No spacecraft fragment was seen to survive below a height of 47 km. The integral luminous efficiency of the event was 1.3%. As expected, the capsule had a very low luminous efficiency and very low ablation coefficient. The ablation coefficients and masses of the major spacecraft fragments are discussed. 2011 Journal Article http://hdl.handle.net/20.500.11937/36289 10.1093/pasj/63.5.1003 Nihon Tenmon Gakkai unknown |
| spellingShingle | meteors meteorites astrometry space vehicles: individual (HAYABUSA) meteoroids Borovicka, J. Abe, S. Shrbený, L. Spurney, P. Bland, Phil Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title | Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title_full | Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title_fullStr | Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title_full_unstemmed | Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title_short | Photographic and Radiometric Observations of the HAYABUSA Re-Entry |
| title_sort | photographic and radiometric observations of the hayabusa re-entry |
| topic | meteors meteorites astrometry space vehicles: individual (HAYABUSA) meteoroids |
| url | http://hdl.handle.net/20.500.11937/36289 |