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]
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]
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]
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]
2865 Laurel, provisional designation 1935 OK, is a stony Marian asteroid from the middle region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered by English-born South African astronomer Cyril Jackson at Johannesburg Observatory on 31 July 1935. The asteroid was named after movie comedian Stan Laurel.
1575 Winifred, provisional designation 1950 HH, is a stony Phocaea asteroid and slow rotator from the inner regions of the asteroid belt, approximately 9.5 kilometers in diameter.
1712 Angola, provisional designation 1935 KC, is a dark asteroid from the outer regions of the asteroid belt, approximately 66 kilometers in diameter. It was discovered on 28 May 1935, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa. It is named after the Republic of Angola.
1815 Beethoven, provisional designation 1932 CE1, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory. The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative). It was named after Ludwig van Beethoven.
1960 Guisan, provisional designation 1973 UA, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 25 kilometers in diameter.
3425 Hurukawa, provisional designation 1929 BD, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 29 January 1929, and named after Japanese astronomer Kiichirō Furukawa.
1524 Joensuu, provisional designation 1939 SB, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 42 kilometers in diameter. It was discovered on 18 September 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named for the town of Joensuu.
1817 Katanga, provisional designation 1939 MB, is a stony Phocaea asteroid in from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 20 June 1939, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa. It is named for the Katanga Province.
1631 Kopff, provisional designation 1936 UC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 11 October 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after German astronomer August Kopff.
1776 Kuiper, provisional designation 2520 P-L, is a dark Eoan asteroid from the outer region of the asteroid belt, approximately 38 kilometers in diameter.
1904 Massevitch is a background asteroid from the central region of the asteroid belt. It was discovered on 9 May 1972, by the Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The uncommon R-type asteroid has a rotation period of 5.3 hours and measures approximately 16 kilometers in diameter. It was later named after Russian astrophysicist Alla Masevich.
1605 Milankovitch, provisional designation 1936 GA, is an Eoan asteroid from the outer region of the asteroid belt, approximately 31 kilometers in diameter. It was named after Serbian scientist Milutin Milanković.
1426 Riviera, provisional designation 1937 GF, is a bright asteroid from the central regions of the asteroid belt, approximately 16 kilometers in diameter. Discovered by Marguerite Laugier at the Nice Observatory in 1937, the asteroid was later named for the Côte d'Azur, also known as French Riviera.
1760 Sandra, provisional designation 1950 GB, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 10 April 1950, by South African astronomer Ernest Johnson at Union Observatory in Johannesburg, and named after his granddaughter Sandra.
1405 Sibelius, provisional designation 1936 RE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 12 September 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The asteroid was named after composer Jean Sibelius.
1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 30 December 1937, by French astronomer Marguerite Laugier at Nice Observatory in southern France, who named it after her son Jean-Jacques Laugier.
1558 Järnefelt, provisional designation 1942 BD, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 65 kilometers in diameter.
1719 Jens is a background asteroid from the central region of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 17 February 1950, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was named after a grandson of the discoverer.
1544 Vinterhansenia, provisional designation 1941 UK, is a dark asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland, and named for Danish astronomer Julie Vinter Hansen.
1545 Thernöe is an elongated background asteroid from the central region of the asteroid belt. It was discovered on 15 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. The uncommon K-type asteroid has a rotation period of 16.1 hours and measures approximately 18 kilometers in diameter. It was later named after Danish astronomer Karl August Thernöe.