Astronomy:275 Sapientia
 Lightcurve-base 3D-model of 275 Sapientia. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 15 April 1888 |
| Designations | |
| (275) Sapientia | |
| Pronunciation | /seɪpiˈɛnʃə/ |
| Named after | Sapientia |
| A888 GB, 1906 AB 1962 GE, 1962 HA | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 124.23 yr (45374 d) |
| |{{{apsis}}}|helion}} | 3.22294 astronomical unit|AU (482.145 Gm) |
| |{{{apsis}}}|helion}} | 2.31754 AU (346.699 Gm) |
| 2.77024 AU (414.422 Gm) | |
| Eccentricity | 0.16342 |
| Orbital period | 4.61 yr (1684.1 d) |
| Mean anomaly | 300.952° |
| Mean motion | 0° 12m 49.54s / day |
| Inclination | 4.76416° |
| Longitude of ascending node | 134.097° |
| 40.0578° | |
| Physical characteristics | |
| Dimensions | 103 km[1] 95.48 ± 1.11 km[2] |
| Mass | (1.538 ± 0.727/0.322)×1018 kg[2] |
| Mean density | 3.374 ± 1.595/0.706 g/cm3[2] |
| Rotation period | 14.933 h (0.6222 d)[1] |
| Geometric albedo | 0.049 ± 0.009[1] |
| C | |
| Absolute magnitude (H) | 9.06[1] |
275 Sapientia is a very large main belt asteroid. It was discovered by Austrain astronomer Johann Palisa on 15 April 1888 in Vienna. This object is named for the Roman personification of wisdom, Sophia.[3]
This object is orbiting the Sun at a distance of 2.77 km with an eccentricity of 0.16 and an orbital period of 4.61 km. The orbital period is inclined at an angle of 4.76° It is classified as a C-type asteroid and is probably composed of carbonaceous material.
Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado, during 2007 produced a light curve with an estimated period of 14.766±0.006 hours with a brightness range of 0.11±0.02 in magnitude.[4] A 2014 study found a period of 14.931±0.001 hours with a variation of 0.12±0.01 in magnitude. The light curve was found to be irregular, suggesting the asteroid has an irregular shape.[5] On September 30, 2015, the asteroid was observed occulting the 7th magnitude star HIP 14977 from multiple sites in Europe. The resulting chords showed a nearly circular prolate spheroid profile.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "275 Sapientia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=20000275.
- ↑ 2.0 2.1 2.2 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society 492 (1). doi:10.1093/mnras/stz3407. https://academic.oup.com/mnras/article/492/1/589/5658701.
- ↑ Schmadel, Lutz D. (11 November 2013). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 9783662066157. https://books.google.com/books?id=eHv1CAAAQBAJ&q=sapientia&pg=PA57.
- ↑ Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, Bibcode: 2007MPBu...34...72W.
- ↑ Pilcher, Frederick (January 2015), "Rotation Period Determinations for 275 Sapientia, 309 Fraternitas, and 924 Toni", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 42 (1): pp. 38–39, Bibcode: 2015MPBu...42...38P.
- ↑ Miles, R.; Haymes, T. (December 2015), "Asteroids and Remote Planets Section: Stellar occultation by asteroid (275) Sapientia well seen from the UK", Journal of the British Astronomical Association 125 (6): 331–332, Bibcode: 2015JBAA..125..331M.
External links
- Lightcurve plot of 275 Sapientia[Usurped!], Palmer Divide Observatory, B. D. Warner (2007)
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 275 Sapientia at AstDyS-2, Asteroids—Dynamic Site
- 275 Sapientia at the JPL Small-Body Database
 |  |
