Discovery [1] | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 20 September 1916 |
Designations | |
(834) Burnhamia | |
Pronunciation | /bərnˈheɪmiə/ |
Named after | Sherburne Wesley Burnham (American astronomer) [2] |
A916 SG ·1959 CA 1972 JE ·A905 UM 1916 AD ·1905 UM | |
Orbital characteristics [3] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 114.27 yr (41,737 d) |
Aphelion | 3.8256 AU |
Perihelion | 2.5443 AU |
3.1849 AU | |
Eccentricity | 0.2012 |
5.68 yr (2,076 d) | |
207.71° | |
0° 10m 24.24s / day | |
Inclination | 3.9779° |
182.68° | |
91.320° | |
Physical characteristics | |
Mean diameter | |
13.875±0.001 h [10] | |
9.5 [1] [3] | |
834 Burnhamia (prov. designation: A916 SGor1916 AD) is a large background asteroid, approximately 61 kilometers (38 miles) in diameter, that is located in the outer region of the asteroid belt. It was discovered on 20 September 1916, by German astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. [1] The X-type asteroid (GS) has a rotation period of 13.9 hours. It was named after American astronomer Sherburne Wesley Burnham (1838–1921). [2]
Burnhamia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [4] [5] It orbits the Sun in the outer main-belt at a distance of 2.5–3.8 AU once every 5 years and 8 months (2,076 days; semi-major axis of 3.18 AU). Its orbit has an eccentricity of 0.20 and an inclination of 4° with respect to the ecliptic. [3] The asteroid's observation arc begins with its first observation as A905 UM at Heidelberg Observatory on 26 October 1905, almost 11 years prior to its official discovery observation. [1]
This minor planet was named after Sherburne Wesley Burnham (1838–1921), American astronomer who discovered many visual binary stars and is known for his Burnham Double Star Catalogue (BDS), a catalogue of double stars seen in the Northern Hemisphere, which was published in two parts by the Carnegie Institution of Washington in 1906. Burnham observed from the Chicago (1877), Lick (1888) and Yerkes (1897) observatories. The naming was published in the journal Astronomische Nachrichten in 1921 ( AN 214, 69), and was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 82 ). [2] The lunar crater Burnham is also named in his honor. [12]
In the Tholen classification, Burnhamia is closest to a G-type asteroid and somewhat similar to a common stony S-type asteroid, [3] while In ioth the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), Burnhamia is an X-type asteroid. [5] [11]
In October 2006, a rotational lightcurve of Burnhamia was obtained from photometric observations by Robert Buchheim at the Altimira Observatory ( G76 ) in California. Lightcurve analysis gave a well-defined rotation period of 13.875±0.001 hours with a brightness variation of 0.20±0.02 magnitude ( U=3 ). [10] The result supersedes previous observations by French amateur astronomer Laurent Bernasconi from May 2005, with a period of 13.9±0.03 hours with an amplitude of 0.15±0.01 magnitude ( U=2+ ), and from October 2006, that gave a period of 13.85±0.03 hours and an amplitude of 0.22±0.02 magnitude ( U=3− ). [13]
According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), the Japanese Akari satellite, and the Infrared Astronomical Satellite IRAS, Burnhamia measures (61.278±0.303), (61.44±2.13) and (66.65±2.4) kilometers in diameter and its surface has an albedo of (0.071±0.008), (0.082±0.007) and (0.0698±0.005), respectively. [6] [7] [9] [8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0602 and a diameter of 66.64 kilometers based on an absolute magnitude of 9.55. [14] The WISE team also published an alternative mean-diameter of (66.151±1.727 km) with corresponding albedos of (0.0611±0.0082). [5] [14] Two asteroid occultations of Burnhamia September 2013 and January 2014, gave both a best-fit ellipse dimension of (61.0 km × 61.0 km). [5] These timed observations are taken when the asteroid passes in front of a distant star.
814 Tauris is a dark and very large background asteroid, approximately 109 kilometers in diameter, located the outer regions of the asteroid belt. It was discovered on 2 January 1916, by astronomer Russian Grigory Neujmin at the Simeiz Observatory on Crimea. The carbonaceous C-type asteroid has a longer-than average rotation period of 35.8 hours. It was named after the ancient name of the Crimean peninsula where the discovering observatory is located.
821 Fanny is a dark background asteroid and slow rotator from the central regions of the asteroid belt. It was discovered on 31 March 1916, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The carbonaceous C-type asteroid (Ch) has an exceptionally long rotation period of 236.6 hours and measures approximately 29 kilometers in diameter. Any reference of the asteroid's name to a person is unknown.
826 Henrika is a background asteroid from the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 28 April 1916. The carbonaceous C-type asteroid has a rotation period of 5.98 hours and measures approximately 21 kilometers in diameter. Any reference to the origin of the asteroid's name is unknown.
830 Petropolitana is a bright background asteroid from the outer regions of the asteroid belt. It was discovered on 25 August 1916, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The stony S-type asteroid has a long rotation period of 39.0 hours and measures approximately 41 kilometers in diameter. It was named after the Russian city of Saint Petersburg.
842 Kerstin is a dark background asteroid from the outer regions of the asteroid belt. It was discovered on 1 October 1916, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The assumed C-type asteroid has a rotation period of 18.7 hours and measures approximately 41 kilometers in diameter. Any reference of the origin of the asteroid's name is unknown.
882 Swetlana is a dark background asteroid from the outer region of the asteroid belt. It was discovered on 15 August 1917, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The X-type asteroid has a longer-than average rotation period of 29.9 hours and measures approximately 42 kilometers in diameter. The origin of the asteroid's name remains unknown.
845 Naëma is a large asteroid and the parent body of the Naëma family located in the outer regions of the asteroid belt. It was discovered on 16 November 1916, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The carbonaceous C-type asteroid has a rotation period of 20.9 hours and measures approximately 54 kilometers in diameter on average, as it is likely elongated in shape. Any reference of the asteroid's name to a person is unknown.
979 Ilsewa is a background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 29 June 1922. The uncommon T-type asteroid has a longer-than average rotation period of 42.6 hours. It was named after Ilse Walldorf, an acquaintance of the discoverer.
982 Franklina is a background asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 21 May 1922, by South African astronomer Harry Edwin Wood at the Union Observatory in Johannesburg. The uncommon A/Ld-type asteroid has a rotation period of at least 16 hours. It was named after British amateur astronomer John Franklin Adams (1843–1912).
1118 Hanskya is a large background asteroid, approximately 77 kilometers in diameter, located in the outer regions of the asteroid belt. Discovered by Sergey Belyavsky and Nikolaj Ivanov in 1927, it was named after Russian astronomer Aleksey Hansky. The presumed dark C-type asteroid has a rotation period of 15.6 hours.
1567 Alikoski, provisional designation 1941 HN, is a rare-type carbonaceous asteroid from the outer region of the asteroid belt, approximately 67 kilometers in diameter. It was discovered on 22 April 1941, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after Finnish astronomer Heikki Alikoski.
3544 Borodino (prov. designation: 1977 RD4) is a stony background asteroid from the inner regions of the asteroid belt, approximately 9 kilometers (5.6 miles) in diameter. It was discovered on 7 September 1977, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The likely elongated S-type asteroid has a rotation period of 5.44 hours. It was named for the Russian village of Borodino where the Battle of Borodino took place.
1806 Derice, provisional designation 1971 LC, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. Discovered on 13 June 1971, at the Bickley site of the Perth Observatory in Western Australia, it was the first discovery of a minor planet ever made in Oceania. The asteroid was named after the wife of Dennis Harwood, staff member at Bickley.
1328 Devota, provisional designation 1925 UA, is a dark background asteroid from the outermost regions of the asteroid belt, approximately 56 kilometers in diameter. It was discovered on 21 October 1925, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in North Africa. The asteroid was named after Argentine astronomer Fortunato Devoto.
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.
1303 Luthera, provisional designation 1928 FP, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther.
2122 Pyatiletka, provisional designation 1971 XB, is a stony asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter.
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.
1847 Stobbe, provisional designation A916 CA, is an asteroid from the middle region of the asteroid belt, approximately 23 kilometers in diameter.
1302 Werra, provisional designation 1924 SV, is a Themistian asteroid from the outer regions of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 28 September 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory. The asteroid was named for the river Werra in central Germany.