275 Sapientia
 Orbital diagram | |
| 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 | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 124.23 yr (45374 d) |
| Aphelion | 3.22294 AU (482.145 Gm) |
| Perihelion | 2.31754 AU (346.699 Gm) |
| 2.77024 AU (414.422 Gm) | |
| Eccentricity | 0.16342 |
| 4.61 yr (1684.1 d) | |
| 300.952° | |
| 0° 12m 49.54s / day | |
| Inclination | 4.76416° |
| 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] |
| 14.933 h (0.6222 d)[1] | |
| 0.049 ± 0.009[1] | |
| C | |
| 9.06[1] | |
275 Sapientia is a very large Main belt asteroid that was discovered by Johann Palisa on 15 April 1888 in Vienna. It is classified as a C-type asteroid and is probably composed of carbonaceous material. It is named for the Roman personification of wisdom, Sapientia.[3]
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
[edit]- ^ a b c d e "275 Sapientia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- ^ a b c 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.
- ^ Schmadel, Lutz D. (11 November 2013). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 9783662066157 – via Google Books.
- ^ 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, vol. 42, no. 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
[edit]- Lightcurve plot of 275 Sapientia, Palmer Divide Observatory, B. D. Warner (2007)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- 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
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