4435 Holt
| Discovery [1] | |
|---|---|
| Discovered by | C. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 13 January 1983 |
| Designations | |
| MPC designation | 4435 Holt |
Named after |
Henry E. Holt (astronomer)[2] |
| 1983 AG2 · 1978 PZ2 | |
| Mars-crosser [1][3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.71 yr (13,408 days) |
| Aphelion | 3.0935 AU |
| Perihelion | 1.5394 AU |
| 2.3165 AU | |
| Eccentricity | 0.3354 |
| 3.53 yr (1,288 days) | |
| 151.46° | |
| Inclination | 21.907° |
| 330.93° | |
| 110.12° | |
| Earth MOID | 0.6791 AU |
| Physical characteristics | |
| Dimensions | 6.44 km (derived)[3] |
| 0.20 (assumed)[3] | |
| SMASS = S [1][3] | |
|
13.1[1] 13.32±0.11[4][5] | |
|
| |
4435 Holt, provisional designation 1983 AG2, is a stony asteroid, classified as an eccentric Mars-crosser, about 6 kilometers in diameter. It was discovered by American female astronomer Carolyn Shoemaker at the U.S. Palomar Observatory in California, on 13 January 1983.[6]
The S-type asteroid orbits the Sun at a distance of 1.5–3.1 AU once every 3 years and 6 months (1,288 days). Its orbit shows a typically high eccentricity of 0.34 and an inclination of 22 degrees from the plane of the ecliptic.[1] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 for the body's surface, and derives a diameter of 6.4 kilometer based on its absolute magnitude of 13.3.[4][5] The asteroid's rotation period still remains unknown.[3]
The minor planet was named for American planetary geologist and astronomer Henry E. Holt, at the U.S. Geological Survey and Northern Arizona University. Member of the science teams for the Apollo and Surveyor programs, he investigated the detailed geology and photometric properties of the lunar surface. After retiring from the Geological Survey, he was a principal participant in the Palomar Asteroid and Comet Survey (PACS) from 1983 to 1993.[7] Holt has discovered and co-discovered six comets and several hundred asteroids, including 4581 Asclepius, a potentially hazardous asteroid that has made the closest approach to Earth of all numbered asteroids.[2]
References
- 1 2 3 4 5 6 "JPL Small-Body Database Browser: 4435 Holt (1983 AG2)" (2015-04-24 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4435) Holt. Springer Berlin Heidelberg. p. 381. ISBN 978-3-540-00238-3. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (4435) Holt". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved January 2016.
- 1 2 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved January 2016.
- ↑ "4435 Holt (1983 AG2)". Minor Planet Center. Retrieved January 2016.
- ↑ Shoemaker, C. S.; Holt, H. E.; Shoemaker, E. M.; Bowell, E.; Levy, D. H. (December 1992). "The Palomar Asteroid and Comet Survey (PACS), 1983-1993". Abstracts for the IAU Symposium 160: Asteroids: 269. Bibcode:1993LPICo.810..269S. Retrieved January 2016.
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
- 4435 Holt at the JPL Small-Body Database
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