372 Palma
.png) A three-dimensional model of 372 Palma based on its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 19 August 1893 |
| Designations | |
| Pronunciation | /ˈpælmə/[1] |
Named after | Palma |
| 1893 AH | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.54 yr (44757 d) |
| Aphelion | 3.9693 AU (593.80 Gm) |
| Perihelion | 2.33325 AU (349.049 Gm) |
| 3.15125 AU (471.420 Gm) | |
| Eccentricity | 0.25958 |
| 5.59 yr (2043.3 d) | |
| 275.769° | |
| 0° 10m 34.284s / day | |
| Inclination | 23.828° |
| 327.37° | |
| 115.582° | |
| Physical characteristics | |
| Dimensions | 173.6±2.8 km[2] 191.12 ± 2.68 km[3] |
| Mass | (5.15 ± 0.64) × 1018 kg[3] |
Mean density | 1.40 ± 0.18 g/cm3[3] |
| 8.567 h (0.3570 d)[2] | |
| 0.0655±0.002[2] | |
| BFC/B[2] | |
| 7.5[2] | |
372 Palma is one of the largest main-belt asteroids. It was discovered by French astronomer Auguste Charlois on August 19, 1893, in Nice. The name is thought to come from the capital city of Mallorca, an island of the Balearic Islands (Spain), which is located south of France. It is one of seven of Charlois's discoveries that were expressly named by the Astromomisches Rechen-Institut (Astronomical Calculation Institute).[4]
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This object is orbiting the Sun at a distance of 3.15 AU with a moderate eccentricity (ovalness) of 0.26 and an orbital period of 5.59 years. The orbital plane is inclined at an angle of 23.8° relative to the plane of the ecliptic. It is classified as a B-type asteroid and is spinning with a rotation period of 8.567 hours.[2]
Since 2000, 372 Palma has been observed 14 times in an asteroid occultation event, a number of which produced multiple chords revealing the asteroid's size and shape. It was observed occulting the radio galaxy 0141+268 on May 15, 2017, which yielded a diameter estimate of 192.1±4.8 km.[5] On September 13, 2018, it was revealed to be 120 miles long (193 kilometers long).[6]
See also
[edit]References
[edit]- ↑ "Palma Christi". Oxford English Dictionary (online ed.). Oxford University Press. (Subscription or participating institution membership required.)
"Palma". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 23 March 2020. - 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 372 Palma". Jet Propulsion Laboratory. Retrieved 11 May 2016.
- 1 2 3 Carry, B. (December 2012). "Density of asteroids". Planetary and Space Science. 73: 98–118. arXiv:1203.4336. Bibcode:2012P&SS...73...98C. doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names (fifth ed.). Springer. ISBN 3-540-00238-3.
- ↑ Harju, Jorma; et al. (October 2018). "Radio Interferometric Observation of an Asteroid Occultation". The Astronomical Journal. 156 (4). id. 155. arXiv:1804.05640. Bibcode:2018AJ....156..155H. doi:10.3847/1538-3881/aad45b.
- ↑ "PDS Asteroid/Dust Subnode". sbn.psi.edu. Archived from the original on 25 April 2018. Retrieved 25 April 2018.
External links
[edit]- Asteroid 372 Palma / Andromeda Galaxy Transit Archived 9 March 2021 at the Wayback Machine (19 Oct 2011)
- 372 Palma at AstDyS-2, Asteroids—Dynamic Site
- 372 Palma at the JPL Small-Body Database
