| Discovery [1] | |
|---|---|
| Discovered by | L. Boyer |
| Discovery site | Algiers Obs. |
| Discovery date | 9 November 1950 |
| Designations | |
| (1851) Lacroute | |
Named after | Pierre Lacroute (French astronomer) [2] |
| 1950 VA | |
| main-belt · ( inner) | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 ( JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.35 yr (24,236 days) |
| Aphelion | 3.7003 AU |
| Perihelion | 2.5044 AU |
| 3.1024 AU | |
| Eccentricity | 0.1927 |
| 5.46 yr (1,996 days) | |
| 85.690 ° | |
| 0° 10m 49.44s / day | |
| Inclination | 1.6660° |
| 24.766° | |
| 343.20° | |
| Physical characteristics | |
| Dimensions | 16.89 km (
IRAS)
[3] 18.158±0.108 km [4] |
| 0.049±0.007
[4] 0.0745±0.009 (IRAS) [3] | |
| 12.7 [1] | |
1851 Lacroute, provisional designation 1950 VA, is an asteroid from the outer region of the asteroid belt, approximately 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, and named after French astronomer Pierre Lacroute. [2] [5]
Orbit and classification
Lacroute orbits the Sun in the outer main-belt at a distance of 2.5–3.7 AU once every 5 years and 6 months (1,996 days). Its orbit has an eccentricity of 0.19 and an inclination of 2 ° with respect to the ecliptic. [1] As no precoveries were taken, and no prior identifications were made, the body's observation arc begins with its official discovery observation in 1950. [5]
Physical characteristics
According to the surveys carried out by the Infrared Astronomical Satellite ( IRAS) and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lacroute measures 16.9 and 18.2 kilometers in diameter, and its surface has an albedo of 0.049 and 0.074, respectively. [3] [4] As of 2016, the body's spectral type, as well as its rotation period and shape remain unknown. [1] [6]
Naming
This minor planet 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). [2]
Lacroute also made an independent reduction of the astrometric star catalogue AGK3, using a technique involving overlapping photographic plates. [2] The official naming citation was published by the Minor Planet Center on 1 August 1978 ( M.P.C. 4419). [7]
References
- ^ a b c d e "JPL Small-Body Database Browser: 1851 Lacroute (1950 VA)" (2017-03-18 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2017.
- ^ a b c d Schmadel, Lutz D. (2007). "(1851) Lacroute". Dictionary of Minor Planet Names – (1851) Lacroute. Springer Berlin Heidelberg. p. 148. doi: 10.1007/978-3-540-29925-7_1852. ISBN 978-3-540-00238-3.
- ^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. Retrieved 17 October 2019.
- ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv: 1209.5794. Bibcode: 2012ApJ...759L...8M. doi: 10.1088/2041-8205/759/1/L8. Retrieved 6 December 2016.
- ^ a b "1851 Lacroute (1950 VA)". Minor Planet Center. Retrieved 13 December 2016.
- ^ "LCDB Data for (1851) Lacroute". Asteroid Lightcurve Database (LCDB). Retrieved 8 June 2017.
- ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi: 10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- 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
- 1851 Lacroute at AstDyS-2, Asteroids—Dynamic Site
- 1851 Lacroute at the JPL Small-Body Database
