Discovery [1] | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 5 October 1931 |
Designations | |
(1203) Nanna | |
Named after | Anna Risi (model of painter) Anselm Feuerbach [2] |
1931 TA ·1926 RH 1978 AD | |
main-belt ·(outer) [3] | |
Orbital characteristics [1] | |
Epoch 16 February 2017 (JD 2457800.5) | |
Uncertainty parameter 0 | |
Observation arc | 90.24 yr (32,960 days) |
Aphelion | 3.6055 AU |
Perihelion | 2.1795 AU |
2.8925 AU | |
Eccentricity | 0.2465 |
4.92 yr (1,797 days) | |
137.21° | |
0° 12m 1.44s / day | |
Inclination | 5.9706° |
224.58° | |
176.38° | |
Physical characteristics | |
Dimensions | 31.80±1.22 km [4] 32.59±0.87 km [5] 35.06 km (derived) [3] 35.18±3.9 km (IRAS:2) [6] 35.92±15.13 km [7] 37.91±12.03 km [8] |
15.6±0.1 h (dated) [9] 18.54±0.01 h [10] 25.80±0.05 h [11] | |
0.028±0.017 [7] 0.03±0.01 [8] 0.03 (derived) [3] 0.04±0.00 [4] 0.0473±0.012(IRAS:2) [6] 0.056±0.004 [5] | |
C [3] | |
11.20 [5] [6] ·11.60 [8] ·11.63±0.24 [12] ·11.7 [1] [3] ·11.71 [4] [7] | |
1203 Nanna (provisional designation 1931 TA) is a carbonaceous asteroid from the outer region of the asteroid belt, about 35 kilometers in diameter. It was discovered on 5 October 1931, by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany, [13] and named after Anna Risi, a model and mistress of painter Anselm Feuerbach. [2]
Nanna is a dark C-type asteroid. It orbits the Sun at a distance of 2.2–3.6 AU once every 4 years and 11 months (1,797 days). Its orbit has an eccentricity of 0.25 and an inclination of 6° with respect to the ecliptic. [1] In 1926, it was first identified as 1926 RH, extending the body's observation arc by 5 years prior to its official discovery observation. [13]
In September 2009, two rotational lightcurves of Nanna were obtained by American astronomer Brian Warner from photometric observations at his Palmer Divided Observatory in Colorado. The first lightcurve analysis gave a rotation period of 18.54 hours with a brightness variation of 0.12 magnitude ( U=2 ), while the second lightcurve was ambiguous giving a period of 25.80 and 12.90 hours, respectively, and an amplitude of 0.15 ( U=2 ). [10] These results supersede a fragmentary lightcurve taken by French amateur astronomers Federico Manzini, Laurent Bernasconi and René Roy from August 2004, which gave a period of 15.6 hours ( U=1 ). [9]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Nanna measures between 31.80 and 37.91 kilometers in diameter and its surface has an albedo of 0.028 and 0.056. [4] [5] [6] [7] [8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.03 and a diameter of 35.06 kilometers with an absolute magnitude of 11.7. [3]
This minor planet was named after Anna Risi, a model in several paintings by German classicist painter Anselm Feuerbach. [2] The official naming citation was published by Paul Herget in The Names of the Minor Planets in 1955 ( H 112 ). [2]
4349 Tibúrcio, provisional designation 1989 LX, is a dark asteroid from the central region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 5 June 1989, by German astronomer Werner Landgraf at ESO's La Silla Observatory in northern Chile.
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.
1015 Christa, provisional designation 1924 QF, is a dark background asteroid from the outermost regions of the asteroid belt, approximately 96 kilometers in diameter. It was discovered on 31 January 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The meaning of this asteroids's name is unknown.
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.
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.
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.
4282 Endate, provisional designation 1987 UQ1, is an asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 October 1987, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at Kushiro Observatory (399) in Japan. It was named for amateur astronomer Kin Endate.
9298 Geake, provisional designation 1985 JM, is a Mitidika asteroid from the central regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 15 May 1985, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station near Flagstaff, Arizona, United States. The asteroid was named for British astronomer John E. Geake.
1384 Kniertje, provisional designation 1934 RX, is a dark Adeonian asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. The asteroid was named after a character in the Dutch play Op Hoop van Zegen by Herman Heijermans.
6255 Kuma, provisional designation 1994 XT, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 5 December 1994, by Japanese astronomer Akimasa Nakamura at Kuma Kogen Astronomical Observatory on the Island of Shikoku, Japan. It was named after the Japanese town of Kumakōgen.
1176 Lucidor, provisional designation 1930 VE, is a carbonaceous background asteroid from the central region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered by Eugène Delporte in 1930, who named it after a friend.
4547 Massachusetts is a dark background asteroid from the central regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 16 May 1990, by Japanese astronomers Kin Endate and Kazuro Watanabe at the JCPM Sapporo Station on the island of Hokkaido, Japan. The asteroid was named for the U.S. state of Massachusetts.
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.
1243 Pamela, provisional designation 1932 JE, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 70 kilometers in diameter. It was discovered on 7 May 1932, by South African astronomer Cyril Jackson at the Union Observatory in Johnannesburg. The asteroid was named for Pamela Jackson, daughter of the discoverer.
1347 Patria, provisional designation 1931 VW, is a carbonaceous asteroid from the background population of the central asteroid belt, approximately 32 kilometers in diameter. It was discovered on 6 November 1931, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for the Latin word of fatherland.
2629 Rudra, provisional designation 1980 RB1, is a sizable Mars-crossing asteroid and slow rotator inside the asteroid belt, approximately 5.3 kilometers (3.3 miles) in diameter. It was discovered on 13 September 1980, by American astronomer Charles Kowal at the Palomar Observatory in California. The dark B-type asteroid has a long rotation period 123 hours and likely an elongated shape. It was named after Rudra from Hindu mythology.
1436 Salonta, provisional designation 1936 YA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. Discovered by György Kulin at the Konkoly Observatory in 1936, the asteroid was later named for the Romanian city of Salonta, the birthplace of the discoverer.
1266 Tone is a dark background asteroid from the outer regions of the asteroid belt, approximately 80 kilometers in diameter. Discovered by astronomer Okuro Oikawa at the Tokyo Observatory in 1927, it was assigned the provisional designation 1927 BD. The asteroid was later named after the Tone River, one of Japan's largest rivers.
1323 Tugela, provisional designation 1934 LD, is a dark background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered on 19 May 1934, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the Tugela River in western South Africa.
(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.