1851 Lacroute
| Discovery [1] | |
|---|---|
| Discovered by | L. Boyer |
| Discovery site | Algiers Observatory |
| Discovery date | 9 November 1950 |
| Designations | |
| 1851 Lacroute | |
Named after | Pierre Lacroute (astronomer)[2] |
| 1950 VA | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.96 yr (23726 days) |
| Aphelion | 3.7023 AU (553.86 Gm) |
| Perihelion | 2.5049 AU (374.73 Gm) |
| 3.1036 AU (464.29 Gm) | |
| Eccentricity | 0.19290 |
| 5.47 yr (1997.1 d) | |
| 337.40° | |
| 0° 10m 48.936s / day | |
| Inclination | 1.6661° |
| 24.772° | |
| 343.32° | |
| Earth MOID | 1.50229 AU (224.739 Gm) |
| Jupiter MOID | 1.75305 AU (262.253 Gm) |
| TJupiter | 3.192 |
| Physical characteristics | |
| Dimensions | 16.89 km (IRAS) |
Mean radius | 8.445 ± 0.45 km |
| 0.0745 ± 0.009 | |
| 12.6 | |
1851 Lacroute, provisional designation 1950 VA, is an asteroid from the outer region of the asteroid belt, about 17 kilometers in diameter. It was discovered on 9 November 1950 by French astronomer Louis Boyer at the Algiers Observatory in the capital of Algeria, Northern Africa.[3]
The asteroid orbits the Sun at a distance of 2.5–3.7 AU once every five and a half years (1,997 days). The somewhat eccentric orbit of 0.19 is nearly coplanar with the ecliptic, tilted by only 1.7 degrees. Lacroute has a geometric albedo of 0.075, as measured by the Infrared Astronomical Satellite, IRAS.[1]
It was named in honor of French astronomer Pierre Lacroute (1906–1993), a known astrometrist, president of IAU's Commission 24 in the 1970s, and director of the Observatory of Strasbourg, instrumental in the establishment of the Stellar Data Center (also see SIMBAD). He also made an independent reduction of the astrometric star catalogue AGK3, using a technique involving overlapping photographic plates.[2]
References
- ^ a b c "JPL Small-Body Database Browser: 1851 Lacroute (1950 VA)" (2015-10-04 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
- ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1851) Lacroute. Springer Berlin Heidelberg. p. 148. ISBN 978-3-540-29925-7. Retrieved 5 November 2015.
- ^ "1851 Lacroute (1950 VA)". Minor Planet Center. Retrieved 5 November 2015.
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
- 1851 Lacroute at the JPL Small-Body Database
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