2065 Spicer
| Discovery [1] | |
|---|---|
| Discovered by |
Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 9 September 1959 |
| Designations | |
| MPC designation | 2065 Spicer |
Named after |
Edward H. Spicer (anthropologist)[2] |
|
1959 RN · 1952 BS1 1955 XC · 1968 QX 1973 YR2 | |
| main-belt · (middle) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 59.52 yr (21739 days) |
| Aphelion | 3.3298 AU (498.13 Gm) |
| Perihelion | 2.0653 AU (308.96 Gm) |
| 2.6975 AU (403.54 Gm) | |
| Eccentricity | 0.23439 |
| 4.43 yr (1618.3 d) | |
| 217.16° | |
| 0° 13m 20.856s / day | |
| Inclination | 6.4355° |
| 328.10° | |
| 66.472° | |
| Earth MOID | 1.08003 AU (161.570 Gm) |
| Jupiter MOID | 2.17291 AU (325.063 Gm) |
| Jupiter Tisserand parameter | 3.320 |
| Physical characteristics | |
| Dimensions |
16.721±0.088 km[4] 18.43 km (calculated)[3] |
| 18.165 h (0.7569 d)[1][5] | |
|
0.0615±0.0066[4] 0.057 (assumed)[3] | |
|
SMASS = Xc X [3] | |
| 12.4 | |
|
| |
2065 Spicer, provisional designation 1959 RN, is a dark and eccentric asteroid from the middle region of the asteroid belt, about 17 kilometers in diameter. It was discovered on 9 September 1959, by the Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.[6]
It orbits the Sun at a distance of 2.1–3.3 AU once every 4 years and 5 months (1,618 days). Its orbit shows an eccentricity of 0.23 and is tilted by 6 degrees to the plane of the ecliptic. It has an albedo of 0.06.[3][4] The asteroid spectra is that of a X-type or Xc-type in SMASS classification scheme, which indicates a transitional stage to a C-type spectra of carbonaceous asteroids.
Photometric measurements of the asteroid made in 2005 at the Palmer Divide Observatory (see video in § External links) showed a light curve with a period of 18.165±0.005 hours and a brightness variation of 1.0±0.03 in magnitude.[5]
It is named after American anthropologist Edward H. Spicer (1906–1983), professor at the University of Arizona, and a former president of the American Anthropological Association. His assistance was a major factor in the success of the negotiations with the Schuk Toak District Council and the Papago Tribal Council in 1955 to obtain permission for the site evaluation of the later built Kitt Peak National Observatory.[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 2065 Spicer (1959 RN)" (2015-05-19 last obs.). Jet Propulsion Laboratory. Retrieved 17 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2065) Spicer. Springer Berlin Heidelberg. p. 167. ISBN 978-3-540-29925-7. Retrieved 9 November 2015.
- 1 2 3 4 5 "LCDB Data for (2065) Spicer". Asteroid Lightcurve Database (LCDB). Retrieved 9 November 2015.
- 1 2 3 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 9 November 2015. - 1 2 Warner, Brian D. (September 2005). "Asteroid lightcurve analysis at the Palmer Divide Observatory - winter 2004-2005". The Minor Planet Bulletin. 32 (3): 54–58. Bibcode:2005MPBu...32...54W. ISSN 1052-8091. Retrieved 9 November 2015.
- ↑ "2065 Spicer (1959 RN)". Minor Planet Center. Retrieved 9 November 2015.
External links
- The Palmer Divide Observatory: Tour given by Brian Warner on YouTube (time 4:03 min.)
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2065 Spicer at the JPL Small-Body Database
