Discovery [1] | |
---|---|
Discovered by | Y. Väisälä |
Discovery site | Turku Obs. |
Discovery date | 18 October 1939 |
Designations | |
(1527) Malmquista | |
Named after | Gunnar Malmquist (astronomer) [2] |
1939 UG ·1929 TG 1932 OB ·1972 TK A909 TC | |
main-belt · Flora [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 87.47 yr (31,948 days) |
Aphelion | 2.6694 AU |
Perihelion | 1.7846 AU |
2.2270 AU | |
Eccentricity | 0.1987 |
3.32 yr (1,214 days) | |
203.99° | |
0° 17m 47.76s / day | |
Inclination | 5.1939° |
16.133° | |
304.49° | |
Physical characteristics | |
Dimensions | 9.55±0.49 km [4] 10.040±0.134 km [5] 10.338±0.071 km [6] 10.80 km (calculated) [3] |
14.044±0.0244 h [7] 14.0591 h [8] 14.077±0.004 h [9] | |
0.2202±0.0169 [6] 0.24 (assumed) [3] 0.307±0.037 [4] | |
S [3] | |
12.0 [1] [3] [4] ·12.2 [6] ·12.481±0.002(S) [7] | |
1527 Malmquista, provisional designation 1939 UG, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter.
It was discovered on 18 October 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. [10] It was named for the Swedish astronomer Gunnar Malmquist. [2]
Malmquista is a member of the Flora family, one of the largest families of stony asteroids in the main belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,214 days). Its orbit has an eccentricity of 0.20 and an inclination of 5° with respect to the ecliptic. [1] In 1909, it was first observed at Heidelberg Observatory as A909 TC. The body's observation arc begins at Lowell Observatory in 1929, when it was identified as 1929 TG, 10 years prior to its official discovery observation at Turku. [10]
In September 2002, a first rotational lightcurve of Malmquista was obtained from photometric observations by Stephen Brincat at Flarestar Observatory on the island of Malta. Lightcurve analysis gave a well-defined rotation period of 14.077 hours with a brightness variation of 0.60 magnitude ( U=3 ). [9] In September 2012, observations at the Palomar Transient Factory, California, gave a period of 14.044 hours and an amplitude of 0.42 magnitude ( U=2 ). [7]
In 2013, an international study modeled a lightcurve with a period of 14.0591 hours and found a spin axis of (5.0°, 80.0°) in ecliptic coordinates (λ, β) ( U=n.a. ). [8]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Malmquista measures between 9.55 and 10.338 kilometers in diameter and its surface has an albedo between 0.220 and 0.307. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, a S-type asteroid and the family's largest member and namesake – and calculates a diameter of 10.80 kilometers with an absolute magnitude of 12.0. [3]
This minor planet was named after Swedish astronomer Gunnar Malmquist (1893–1982), director of the Uppsala Astronomical Observatory in Sweden. [2] The official naming citation was published by the Minor Planet Center in January 1956 ( M.P.C. 1350). [11]
Pawlowia, provisional designation 1923 OX, is a background asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 5 October 1923, by Soviet astronomer Vladimir Albitsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Russian physiologist and Nobelist Ivan Pavlov.
1039 Sonneberga, provisional designation 1924 TL, is a dark background asteroid, approximately 34 kilometers in diameter, located in the central region of the asteroid belt. It was discovered on 24 November 1924, by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany. The asteroid was named for the German city of Sonneberg, where the Sonneberg Observatory is located.
6433 Enya, provisional designation 1978 WC, is a stony background asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 18 November 1978, by Czech astronomer Antonín Mrkos at the Kleť Observatory in the Czech Republic. It was named for Irish musician Enya.
1096 Reunerta, provisional designation 1928 OB, is an asteroid from the background population of the asteroid belt's central region, approximately 40 kilometers in diameter. It was discovered on 21 July 1928, by astronomer Harry Edwin Wood at the Union Observatory in Johannesburg, South Africa. The asteroid was named after South African engineer Theodore Reunert, supporter of the observatory and friend of the discoverer.
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.
1132 Hollandia, provisional designation 1929 RB1, is a stony asteroid from the middle region of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 13 September 1929, by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. It was named for the region Holland in the Netherlands.
1151 Ithaka, provisional designation 1929 RK, is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered by Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in 1929, and later named for the Greek island of Ithaca.
(9928) 1981 WE9, provisional designation 1981 WE9, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 16 November 1981, by astronomers at Perth Observatory in Bickley, Australia.
6349 Acapulco, provisional designation 1995 CN1, is a dark Adeonian asteroid from the middle region of the asteroid belt, approximately 22 kilometers in diameter.
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.
1991 Darwin, provisional designation 1967 JL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter.
1267 Geertruida, provisional designation 1930 HD, is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. Discovered by astronomer Hendrik van Gent at Johannesburg Observatory in 1930, the asteroid was later named after Geertruid Pels, sister of Dutch astronomer Gerrit Pels.
2571 Geisei, provisional designation 1981 UC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory on 23 October 1981, and named for the Japanese village of Geisei.
1383 Limburgia, provisional designation 1934 RV, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 23 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. It is named for the Dutch province Limburg.
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.
2043 Ortutay, provisional designation 1936 TH, is a dark asteroid from the outer regions of the asteroid belt, approximately 45 kilometers in diameter. The asteroid was discovered by Hungarian astronomer György Kulin at the Konkoly Observatory, Budapest, on 12 November 1936. It was named after Hungarian ethnographer Gyula Ortutay.
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.
2391 Tomita, provisional designation 1957 AA, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. The asteroid was discovered on 9 January 1957, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was named after Japanese astronomer Kōichirō Tomita.
3823 Yorii, provisional designation 1988 EC1, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 11 kilometers in diameter.
2195 Tengström, provisional designation 1941 SP1, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 27 September 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland, and named for Swedish geodesist Erik Tengström.