Is the "Dark Comet" 2005 VL1 the Venera 2 Spacecraft?
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866929742867857408 |
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| author | Loeb, Abraham Cloete, Richard |
| author_facet | Loeb, Abraham Cloete, Richard |
| contents | Recently, Seligman et. al. (2024) identified a population of near-Earth objects (NEOs) that exhibit statistically significant non-gravitational accelerations with no coma, and labeled them dark comets. Here, we show that one of these objects, 2005 VL1, was at closest approach to Earth in November 1965 when the Venera 2 spacecraft was launched to explore Venus. The observed H magnitude of 2005 VL1 is consistent with a high reflectance from the full surface of Venera 2 including its Solar panels. As known for Venera 2, 2005 VL1 arrived within a short distance from Venus in February 1966, a highly improbable coincidence (< 1%) for the orbital phase of a near-Earth object that does not target a close approach to Venus. Indeed, 2005 VL1's orbital parameters are very similar to the reported values for Venera 2. Given the area-to-mass ratio of Venera 2, we show that 2005 VL1's non-gravitational acceleration and negligible transverse acceleration match the values expected from Solar radiation pressure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_03552 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Is the "Dark Comet" 2005 VL1 the Venera 2 Spacecraft? Loeb, Abraham Cloete, Richard Earth and Planetary Astrophysics Recently, Seligman et. al. (2024) identified a population of near-Earth objects (NEOs) that exhibit statistically significant non-gravitational accelerations with no coma, and labeled them dark comets. Here, we show that one of these objects, 2005 VL1, was at closest approach to Earth in November 1965 when the Venera 2 spacecraft was launched to explore Venus. The observed H magnitude of 2005 VL1 is consistent with a high reflectance from the full surface of Venera 2 including its Solar panels. As known for Venera 2, 2005 VL1 arrived within a short distance from Venus in February 1966, a highly improbable coincidence (< 1%) for the orbital phase of a near-Earth object that does not target a close approach to Venus. Indeed, 2005 VL1's orbital parameters are very similar to the reported values for Venera 2. Given the area-to-mass ratio of Venera 2, we show that 2005 VL1's non-gravitational acceleration and negligible transverse acceleration match the values expected from Solar radiation pressure. |
| title | Is the "Dark Comet" 2005 VL1 the Venera 2 Spacecraft? |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2503.03552 |