Discovery [1] | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 22 December 1891 |
Designations | |
(323) Brucia | |
Pronunciation | /ˈbruːsiə,ˈbruːʃə/ |
Named after | Catherine Wolfe Bruce [2] (American philanthropist) |
1934 JC ·A923 JA | |
main-belt ·(inner) Phocaea [3] ·ex-Mars-crosser [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 125.35 yr (45,785 days) |
Aphelion | 3.0979 AU |
Perihelion | 1.6662 AU |
2.3820 AU | |
Eccentricity | 0.3005 |
3.68 yr (1,343 days) | |
106.64° | |
0° 16m 5.16s / day | |
Inclination | 24.230° |
97.398° | |
291.26° | |
Mars MOID | 0.3464 AU |
Physical characteristics | |
Dimensions | 27.714±0.300 km [5] 29.23±2.92 km [6] 32.395±0.317 km [7] 35.82±1.7 km [4] [8] 37.29±0.76 km [9] |
9.46 h [10] 9.4602±0.0001 h [11] 9.463±0.005 h [12] 10 h [4] | |
0.165±0.007 [9] 0.1765±0.018 [8] 0.2174±0.0421 [7] 0.265±0.053 [6] 0.295±0.046 [5] | |
Tholen = S [1] [4] B–V = 0.893 [1] U–B = 0.480 [1] | |
9.09±0.58 [13] ·9.73 [1] [4] [6] [7] [8] [9] | |
Brucia (minor planet designation: 323 Brucia) is a stony Phocaea asteroid and former Mars-crosser from the inner regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was the first asteroid to be discovered by the use of astrophotography. [14]
Brucia was also the first of over 200 asteroids discovered by Max Wolf, a pioneer in that method of finding astronomical objects. Discovered on December 22, 1891, when he was 28 years old, it was named in honour of Catherine Wolfe Bruce, a noted patroness of the science of astronomy, who had donated $10,000 for the construction of the telescope used by Wolf. [2] [15]
The asteroid is a member of the Phocaea family ( 701 ), [3] a large family of stony S-type asteroids with nearly two thousand known members. [16] : 23 It was an outer Mars-crossing asteroid with perihelion less than 1.666 AU [1] until July 2017. For comparison, asteroid 4222 Nancita will become a Mars-crosser in June 2019. (6454) 1991 UG1 was a Mars-crossing asteroid until January 2016. [17] [ needs update ]
Brucia has a synodic rotation period of 9.463 hours (as of 1998). [4] According to the survey carried out by the Infrared Astronomical Satellite, Brucia measures 35.82 kilometers in diameter and its surface has an albedo of 0.1765. [8]
2000 Herschel, provisional designation 1960 OA, is a stony Phocaea asteroid and a tumbling slow rotator from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered 29 July 1960, by German astronomer Joachim Schubart at Sonneberg Observatory in eastern Germany. The S-type asteroid has a long rotation period of 130 hours. It was named after astronomer William Herschel.
1615 Bardwell, provisional designation 1950 BW, is a rare-type Themistian asteroid from the outer region of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 28 January 1950, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. It is named for American astronomer Conrad Bardwell.
Arago, provisional designation 1923 OT, is a dark asteroid from the outer regions of the asteroid belt, approximately 55 kilometers in diameter. It was discovered on 5 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after French mathematician François Arago.
1051 Merope is a dark Alauda asteroid from the outermost region of the asteroid belt, approximately 68 kilometers in diameter. It was discovered on 16 September 1925, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany, and given the provisional designation 1925 SA. Reinmuth named it after the nymph Merope from Greek mythology. The asteroid has a rotation period of 27.2 hours.
1076 Viola, provisional designation 1926 TE, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 5 October 1926, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after the flowering plant Viola.
1156 Kira, provisional designation 1928 DA, is a stony background asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 22 February 1928, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. Any reference of its name to a person or occurrence is unknown.
1164 Kobolda, provisional designation 1930 FB, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Karl Reinmuth at Heidelberg Observatory in 1930, the asteroid was later named after German astronomer Hermann Kobold.
1568 Aisleen, provisional designation 1946 QB, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 12.5 kilometers in diameter. It was discovered on 21 August 1946, by South African astronomer Ernest Johnson at Johannesburg Observatory in South Africa. It is named for the discoverer's wife, Aisleen Johnson.
2839 Annette is a bright Flora asteroid from the inner regions of the asteroid belt. It was discovered on 5 October 1929, by American astronomer Clyde Tombaugh at Lowell Observatory during his search for Pluto. The presumed S-type asteroid has a rotation period of 10.5 hours and measures approximately 5 kilometers in diameter. It was named after the discoverer's daughter.
11277 Ballard, provisional designation 1988 TW2, is a Phocaea asteroid from the inner regions of the asteroid belt, approximately 6.3 kilometers (3.9 miles) in diameter. It was discovered on 8 October 1988, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California. The assumed S-type asteroid has a rotation period of at least 10 hours. It was named for American marine scientist Robert Ballard.
19982 Barbaradoore, provisional designation 1990 BJ, is an eccentric, stony Phocaea asteroid and a recent Mars-crosser from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 22 January 1990, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States. The asteroid was named after Barbara Doore, a cousin of the discoverer.
2033 Basilea, provisional designation 1973 CA, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 February 1973, by astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The asteroid was named for the Swiss city of Basel.
1651 Behrens, provisional designation 1936 HD, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. Discovered by Marguerite Laugier in 1936, it was named after Johann Behrens.
1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew.
3893 DeLaeter, provisional designation 1980 FG12, is an asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 20 March 1980, by British astronomer Michael Candy at the Perth Observatory in Bickley, Australia. The asteroid was named after Australian scientist John Robert de Laeter.
1309 Hyperborea is a carbonaceous background asteroid from the outermost regions of the asteroid belt, approximately 57 kilometers in diameter. It was discovered on 11 October 1931, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula, and given the provisional designation 1931 TO. The asteroid was named after Hyperborea, the northern homeland of a Greek mythical race of giants.
2349 Kurchenko, provisional designation 1970 OG, is a background asteroid from the central regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 30 July 1970, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named for Soviet flight attendant Nadezhda Kurchenko who was killed during an airline hijacking in 1970. The asteroid has a rotation period of 8.6 hours and possibly a spherical shape.
2696 Magion, provisional designation 1980 HB, is a dark background asteroid and a slow rotator from the inner regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 16 April 1980, by Slovak astronomer Ladislav Brožek at the Kleť Observatory in former Czechoslovakia. The X-type asteroid has an ambiguous rotation period of 480 hours and is possibly a tumbler. It was named for the first Czechoslovak satellite, Magion 1, launched in 1978.
2056 Nancy, provisional designation A909 TB, is a stony background asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 15 October 1909, by German astronomer Joseph Helffrich at Heidelberg Observatory in southwest Germany. The S-type asteroid has a tentative rotation period of 15.0 hours. It was named for Nancy Marsden, wife of British astronomer Brian G. Marsden.
1573 Väisälä, provisional designation 1949 UA, is a stony Phocaea asteroid, slow rotator and suspected tumbler from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 27 October 1949, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle, Belgium. It was named for Finnish astronomer Yrjö Väisälä.