1844 Susilva
| Discovery [1] | |
|---|---|
| Discovered by | P. Wild |
| Discovery site | Zimmerwald Obs. |
| Discovery date | 30 October 1972 |
| Designations | |
| MPC designation | 1844 Susilva |
Named after |
Susi Petit–Pierre (fiend of discoverer)[2] |
|
1972 UB · 1943 EU 1953 AA · 1959 GJ | |
| main-belt · Eos [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.10 yr (23,047 days) |
| Aphelion | 3.1708 AU |
| Perihelion | 2.8597 AU |
| 3.0152 AU | |
| Eccentricity | 0.0515 |
| 5.24 yr (1,912 days) | |
| 316.17° | |
| Inclination | 11.788° |
| 99.485° | |
| 75.199° | |
| Physical characteristics | |
| Dimensions |
26.80±0.32 km[4] 19.022±0.232 km[5] 22.41 km (calculated)[3] |
|
0.118±0.011[4] 0.2358±0.0545[5] 0.14 (assumed)[3] | |
| S [3] | |
|
11.0[1][3] 10.8[4][5] 11.49±0.44[6] | |
|
| |
1844 Susilva, provisional designation 1972 UB, is a stony asteroid from the outer region of the asteroid belt, about 22 kilometers in diameter. It was discovered by astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland, on 30 October 1972.[7]
The asteroid is a member or the Eos family. It orbits the Sun at a distance of 2.9–3.2 AU once every 5.23 years (1,911 days). Its low-eccentric orbit is tilted by 12 degrees to the plane of the ecliptic. The S-type asteroid has an albedo of about 0.14, with observational results of 0.118±0.011 and 0.2358±0.0545 from the WISE/NEOWISE surveys.[4][5] Susilva's rotation period has not yet been measured.[3]
The discoverer named a pair of asteroids after two of his former schoolmates, Susi and Helen, both from the small village of Wald, Zürich in Switzerland. This one was dedicated to Susi Petit–Pierre, while the subsequently numbered asteroid 1845 Helewalda was given to Helen Gachnang.[2][8]
References
- 1 2 3 "JPL Small-Body Database Browser: 1844 Susilva (1972 UB)" (2016-02-17 last obs.). Jet Propulsion Laboratory. Retrieved March 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1844) Susilva. Springer Berlin Heidelberg. p. 148. ISBN 978-3-540-00238-3. Retrieved March 2016.
- 1 2 3 4 5 6 "LCDB Data for (1844) Susilva". Asteroid Lightcurve Database (LCDB). Retrieved March 2016.
- 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved March 2016.
- 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved March 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved March 2016.
- ↑ "1844 Susilva (1972 UB)". Minor Planet Center. Retrieved March 2016.
- ↑ "Himmlischer Besuch auf der Sternwarte Eschenberg" (in German). Sternwarte Eschenberg. Retrieved March 2016.
Helen Gachnang and Susi Petit-Pierre visit the Eschenberg Observatory
External links
- 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
- 1844 Susilva at the JPL Small-Body Database
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