Discovery [1] | |
---|---|
Discovered by | G. Neujmin |
Discovery site | Simeiz Obs. |
Discovery date | 11 October 1931 |
Designations | |
(1309) Hyperborea | |
Pronunciation | ⫽haɪpərˈbɔːriːə⫽ [2] |
Named after | Hyperborea [3] (Greek mythology) |
1931 TO ·1934 GT 1971 SG1 ·1973 AW4 A919 RB ·A919 SH | |
main-belt ·(outer) [1] [4] background [5] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 98.23 yr (35,880 days) |
Aphelion | 3.6888 AU |
Perihelion | 2.7251 AU |
3.2069 AU | |
Eccentricity | 0.1503 |
5.74 yr (2,098 days) | |
292.38° | |
0° 10m 17.76s / day | |
Inclination | 10.279° |
206.08° | |
244.90° | |
Physical characteristics | |
Dimensions | 55.14±14.34 km [6] 55.48±13.26 km [7] 57.11 km (derived) [4] 57.15±3.9 km [8] 57.570±0.349 km [9] 57.99±0.72 km [10] 61.605±1.019 km [11] 64.40±2.03 km [12] |
13.858±0.004 h [13] 13.87±0.002 [13] 13.88±0.02 h [14] 13.95±0.02 h [15] | |
0.03±0.02 [6] 0.032±0.007 [12] 0.0387±0.0054 [11] 0.04±0.03 [7] 0.0411 (derived) [4] 0.043±0.005 [9] 0.044±0.001 [10] 0.0450±0.007 [8] | |
C [4] [16] | |
10.20 [8] [10] [11] ·10.30 [4] [12] ·10.30±0.11 [16] ·10.40 [1] [6] ·10.43 [7] | |
1309 Hyperborea ⫽haɪpərˈbɔːriːə⫽ 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. [17] The asteroid was named after Hyperborea, the northern homeland of a Greek mythical race of giants. [3]
Hyperborea is a non-family asteroid of the main belt's background population. [5] It orbits the Sun in the outermost asteroid belt at a distance of 2.7–3.7 AU once every 5 years and 9 months (2,098 days; semi-major axis of 3.21 AU). Its orbit has an eccentricity of 0.15 and an inclination of 10° with respect to the ecliptic. [1]
The body's observation arc begins at Heidelberg Observatory with its first observations as A919 RB in September 1919, or 12 years prior to its official discovery observation at Simeiz. [17]
Hyperborea has been characterized as a carbonaceous C-type asteroid by Pan-STARRS photometric survey. [16]
Between 2002 and 2017, four rotational lightcurves of Hyperborea were obtained from photometric observations by astronomers Francisco Sold and Pierre Antonini, as well as by astronomers at the Oakley Southern Sky and Rozhen Observatory in Australia and Bulgaria, respectively ( U=2+/n.a./3/2 ). [13] [14] [15] The consolidated lightcurve gave a rotation period of 13.88 hours with a brightness amplitude between 0.34 and 0.41 magnitude. [4]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Hyperborea measures between 55.14 and 64.40 kilometers in diameter and its surface has an albedo between 0.03 and 0.0450. [6] [7] [8] [9] [10] [11] [12]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0411 and a diameter of 57.11 kilometers based on an absolute magnitude of 10.3. [4]
This minor planet was named after Hyperborea, the homeland of the Hyperboreans, a Greek mythical race of giants associated with the cult of Apollo. Herodotus placed the region far to the north of Thrace beyond the North Wind. It was therefore believed to be a region of perpetual sunshine. Lutz Schmadel, the author of the Dictionary of Minor Planets, learned about the naming from Russian astronomer Nataliya Sergeevna Samoilova-Yakhontova (see 1653 Yakhontovia). [3]
1743 Schmidt, provisional designation 4109 P-L, is a dark background asteroid from the inner regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered during the Palomar–Leiden survey on 24 September 1960, by astronomers Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Tom Gehrels at Palomar Observatory in California. The C-type asteroid has a rotation period of 17.5 hours. It was named for the optician Bernhard Schmidt.
Athalia, provisional designation 1903 ME, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 20 September 1903, by German astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The asteroid was named after the ancient Judahite queen Athaliah.
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.
La Paz, provisional designation 1923 PD, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 31 October 1923, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory and named after the city La Paz in Bolivia.
1024 Hale, provisional designation A923 YO13, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 45 kilometers (28 miles) in diameter. The asteroid was discovered on 2 December 1923, by Belgian–American astronomer George Van Biesbroeck at the Yerkes Observatory in Wisconsin, United States. It was named for American astronomer George Ellery Hale. The dark C-type asteroid may have a rotation period of 16 hours.
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.
1031 Arctica, provisional designation 1924 RR, is a dark asteroid from the outer region of the asteroid belt, approximately 75 kilometers in diameter. It was discovered on 6 June 1924, by Soviet−Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula. It was named for the Arctic Sea.
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.
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.
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.
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.
1493 Sigrid, provisional designation 1938 QB, is a dark Nysian asteroid from the inner regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 26 August 1938, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. It was named after Sigrid Strömgren, wife of astronomer Bengt Strömgren.
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.
2120 Tyumenia is a dark background asteroid, approximately 45 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered on 9 September 1967, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named for the now Russian district of Tyumen Oblast in Western Siberia.
(7563) 1988 BC is a background asteroid from the central region of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 16 January 1988, by Japanese amateur astronomer Takuo Kojima at the YGCO Chiyoda Station in the Kantō region of Japan. The asteroid has a rotation period of 6.5 hours.