1064 Aethusa
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 2 August 1926 |
| Designations | |
| MPC designation | 1064 Aethusa |
Named after | Aethusa cynapium (fool's parsley)[2] |
| 1926 PA · 1962 HF | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 89.30 yr (32617 days) |
| Aphelion | 2.9933 AU (447.79 Gm) |
| Perihelion | 2.0928 AU (313.08 Gm) |
| 2.5431 AU (380.44 Gm) | |
| Eccentricity | 0.17704 |
| 4.06 yr (1481.3 d) | |
| 68.294° | |
| 0° 14m 34.944s / day | |
| Inclination | 9.5001° |
| 280.58° | |
| 20.577° | |
| Earth MOID | 1.07958 AU (161.503 Gm) |
| Jupiter MOID | 2.21988 AU (332.089 Gm) |
| Jupiter Tisserand parameter | 3.403 |
| Physical characteristics | |
Mean radius | 9.33±0.45 km |
| 8.621 h (0.3592 d) | |
| 0.3202±0.034 | |
| 10.6 | |
|
| |
1064 Aethusa, provisional designation 1926 PA, is a main-belt asteroid, discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 2 August 1926. It is orbiting the Sun in a distance of 2.09−2.99 AU, measures about 19 kilometers in diameter, and has a high geometric albedo of 0.32.[1]
Measurements made with the IRAS observatory give a diameter of 20.64 ± 1.37 km and a geometric albedo of 0.27 ± 0.03. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 8.621 ± 4.28 km and a geometric albedo of 0.17 ± 0.04.[3] Other photometric observations of the asteroid collected during 2006 show a rotation period of 8.621 ± 0.004 hours with a brightness variation of 0.18 ± 0.02 magnitude.[4]
The asteroid is named after a genus in the carrot family, "Aethusa", of which the plant Aethusa cynapium (fool's parsley) is the only member.[2]
See also
References
- 1 2 3 "JPL Small-Body Database Browser: 1064 Aethusa (1926 PA)" (2015-08-30 last obs.). Jet Propulsion Laboratory. Retrieved 2 May 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1064) Aethusa. Springer Berlin Heidelberg. p. 91. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.
- ↑ Ryan, Erin Lee; et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", eprint arXiv, arXiv:1204.1116
, Bibcode:2012arXiv1204.1116R. - ↑ Warner, Brian D. (December 2006), "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006", The Minor Planet Bulletin, 33 (4): 85–88, Bibcode:2006MPBu...33...85W.
External links
- "1064 Aethusa (1926 PA)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2001064.
- Discovery Circumstances: Numbered Minor Planets
- 1064 Aethusa at the JPL Small-Body Database
