1822 Waterman
| Discovery [1] | |
|---|---|
| Discovered by |
Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 25 July 1950 |
| Designations | |
| MPC designation | 1822 Waterman |
Named after |
Alan T. Waterman (physicist)[2] |
|
1950 OO · 1943 EB 1953 MA · 1963 TT | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.62 yr (23968 days) |
| Aphelion | 2.5030 AU (374.44 Gm) |
| Perihelion | 1.8367 AU (274.77 Gm) |
| 2.1699 AU (324.61 Gm) | |
| Eccentricity | 0.15355 |
| 3.20 yr (1167.5 d) | |
| 219.99° | |
| 0° 18m 30.096s / day | |
| Inclination | 0.95603° |
| 221.30° | |
| 30.406° | |
| Earth MOID | 0.821252 AU (122.8576 Gm) |
| Jupiter MOID | 2.5244 AU (377.64 Gm) |
| Jupiter Tisserand parameter | 3.674 |
| Physical characteristics | |
| Dimensions |
6.515±0.060 km[4] 7.46 km (calculated)[3] |
| 7.581 h (0.3159 d)[1][5] | |
|
0.2639±0.0659[4] 0.20 (assumed)[3] | |
| S [3] | |
| 13.1 | |
|
| |
1822 Waterman, provisional designation 1950 OO, is a stony asteroid from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered on July 25, 1950 by the Indiana Asteroid Program at the Goethe Link Observatory in the U.S. state of Indiana.[6]
The asteroid orbits the Sun at a distance of 1.8–2.5 AU once every 3.20 years (1,167 days). It has a rotation period of 7.6 hours.[5] Preliminary results from the NEOWISE mission determined a geometric albedo of 0.26,[4] while the Light Curve Data Base project assumes a lower albedo of 0.20 for the S-type asteroid.[3]
The asteroid was named in honor of American physicist Alan Tower Waterman (1892–1967), who was the first director of the U.S. National Science Foundation. He went to Washington to serve with OSRD (1941–45), ONR (1946–51), and NSF (1951–63), after being an academic physicist for 25 years. He was awarded the Karl Taylor Compton Gold Medal for distinguished statesmanship in science, the Public Welfare Medal and the Presidential Medal of Freedom.[2][7]
References
- 1 2 3 "JPL Small-Body Database Browser: 1822 Waterman (1950 OO)" (2015-10-16 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1822) Waterman. Springer Berlin Heidelberg. p. 146. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.
- 1 2 3 4 5 "LCDB Data for (1822) Waterman". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 2016.
- 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 22 August 2016. - 1 2 Klinglesmith, Daniel A. III; Hanowell, Jesse; Risley, Ethan; Janek, Turk; Vargas, Angelica; Warren, Curtis Alan (July 2013). "Etscorn Observed Asteroids: Results for Size Asteroids December 2012 - March 2013". The Minor Planet Bulletin. 40 (3): 154–156. Bibcode:2013MPBu...40..154K. ISSN 1052-8091. Retrieved 22 August 2016.
- ↑ "1822 Waterman (1950 OO)". Minor Planet Center. Retrieved 22 August 2016.
- ↑ "Public Welfare Medal". National Academy of Sciences. Retrieved 22 August 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 Geneve, Raoul Behrend
- 1822 Waterman at the JPL Small-Body Database
