Discovery [1] | |
---|---|
Discovered by | A. D. Andrews |
Discovery site | Boyden Obs. |
Discovery date | 25 January 1965 |
Designations | |
(1727) Mette | |
Named after | Mette Andrews (wife of discoverer) [2] |
1965 BA ·1955 DC | |
Mars-crosser [1] · Hungaria [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 61.54 yr (22,477 days) |
Aphelion | 2.0430 AU |
Perihelion | 1.6652 AU |
1.8541 AU | |
Eccentricity | 0.1019 |
2.52 yr (922 days) | |
322.85° | |
Inclination | 22.894° |
133.04° | |
312.94° | |
Known satellites | 1(see 2nd infobox) [lower-alpha 1] |
Earth MOID | 0.7183 AU |
Physical characteristics | |
Dimensions | 5.44±1.09 km [5] 8.97 km (calculated) [4] |
2.427 h [lower-alpha 2] 2.63 h [6] 2.637 h [7] 3.22 h [8] 2.981±0.001 h [9] 2.98125±0.00004 h [9] 2.981±0.001 h [10] 2.981±0.003 h [11] 2.9814±0.0001 h [9] 2.98109±0.00007 h [12] [13] 2.9808±0.0002 h [14] 2.9812±0.0002 h [15] 3.000±0.014 h [16] | |
0.20 (assumed) [4] 0.544±0.218 [5] | |
Tholen = S [1] [4] · S [17] [18] | |
12.6 [1] [4] [5] ·12.69±0.27 [17] ·12.70 [18] | |
1727 Mette, provisional designation 1965 BA, is a binary [lower-alpha 1] Hungaria asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 9 kilometers in diameter.
It was discovered on 25 January 1965, by Irish astronomer David Andrews at Boyden Observatory near Bloemfontein in Free State, South Africa . [3] It was named after the discoverer's wife Mette Andrews. [2]
The S-type asteroid is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It is also a Mars-crossing asteroid, a dynamically unstable group between the main belt and the near-Earth populations.
It orbits the Sun in the inner main-belt at a distance of 1.7–2.0 AU once every 2 years and 6 months (922 days). Its orbit has an eccentricity of 0.10 and an inclination of 23° with respect to the ecliptic. [1] Being a Mars-crosser, Mette will make a relatively close approach to Mars on April 15, 2023, when it will pass near the Red Planet at a distance of less than 0.08 AU (12,000,000 km). [1] It was first identified as 1955 DC at Goethe Link Observatory in 1955, extending the body's observation arc by 10 years prior to its official discovery observation. [3]
A large number of rotational lightcurves of Mette were obtained from photometric observations. They gave a rotation period of approximately 2.981 hours (best rated results) with a brightness variation between 0.22 and 0.38 magnitude, indicating a moderately elongated body ( U=3/3/3 ). [9] [10] [14] [15] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.97 kilometers, [4] while observations with the Wide-field Infrared Survey Explorer gave a diameter of 5.44 kilometers and an albedo of 0.544. [5]
This minor planet was named by the discoverer after his wife, Mette Andrews for her comprehension of his nocturnal working hours and absence from home. [2] The approved naming citation was published by the Minor Planet Center on 1 February 1980 ( M.P.C. 5183). [19]
Discovery | |
---|---|
Discovery date | 17 January 2013 [lower-alpha 1] |
Light-curve | |
Orbital characteristics | |
21 km | |
0.8746±0.0008 days (20 hours, 59±1 minutes) | |
31 mas (maximum) | |
Satellite of | 1727 Mette |
Physical characteristics | |
Dimensions | 2.14 km [20] |
3.4 ± 0.2 fainter than primary [20] | |
15.7 | |
In 2013, a satellite orbiting the asteroid was discovered. The moon measures about 2 kilometers in diameter and orbits Mette once every 20 hours and 59 minutes. [12] [13] [20]
There are several hundreds of asteroids known to have satellites (also see Category:Binary asteroids). [21]
5175 Ables, provisional designation 1988 VS4, is a bright Hungaria asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered by American astronomers Carolyn and Eugene Shoemaker at the U.S. Palomar Observatory, California, on 4 November 1988. It was named after American astronomer Harold Ables.
1919 Clemence, provisional designation 1971 SA, is a bright Hungaria asteroid and suspected tumbler from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 16 September 1971, by American astronomer James Gibson together with Argentine astronomer Carlos Cesco at the Yale-Columbia Southern Station at Leoncito Astronomical Complex in Argentina. It is named after astronomer Gerald Clemence.
1453 Fennia, provisional designation 1938 ED1, is a stony Hungaria asteroid and synchronous binary system from the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Yrjö Väisälä at the Turku Observatory in 1938, the asteroid was later named after the Nordic country of Finland. The system's minor-planet moon was discovered in 2007. It has a derived diameter of 1.95 kilometers and is orbiting its primary every 23.55 hours.
7505 Furusho, provisional designation 1997 AM2, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 3 January 1997, by Japanese astronomer Takao Kobayashi at the Ōizumi Observatory in the Kantō region of Japan. The assumed S-type asteroid is likely elongated in shape and has a rotation period of 4.1 hours. It was named for Japanese astronomer Reiko Furusho.
9069 Hovland, provisional designation 1993 OV, is a stony binary Hungaria asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter.
5899 Jedicke, provisional designation 1986 AH, is a binary Hungaria asteroid approximately 3 kilometers in diameter. It was discovered on 9 January 1986, by American astronomer Carolyn Shoemaker at Palomar Observatory, and named after the members of the Canadian Jedicke family.
3800 Karayusuf, provisional designation 1984 AB, is a Mars-crossing asteroid and suspected binary system from inside the asteroid belt, approximately 2.5 kilometers in diameter. It was discovered on 4 January 1984, by American astronomer Eleanor Helin at the Palomar Observatory in California. The S/L-type asteroid has a short rotation period of 2.2 hours. It was named after Syrian physician Alford Karayusuf, a friend of the discoverer.
1316 Kasan, provisional designation 1933 WC, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 17 November 1933, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for the city of Kazan, Russia, and its nearby Engelhardt Observatory.
2449 Kenos, provisional designation 1978 GC, is a bright Hungaria asteroid and medium-sized Mars-crosser from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by American astronomer William Liller at Cerro Tololo Inter-American Observatory in Chile, on 8 April 1978, and named after Kenos from Selknam mythology. A minor-planet moon was discovered around the asteroid on 27 February 2015.
2577 Litva, provisional designation 1975 EE3, is a Hungarian-type Mars-crosser and rare trinary asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter.
3873 Roddy, provisional designation 1984 WB, is a stony Hungarian asteroid, Mars-crosser and suspected binary system, from the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 21 November 1984, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California, United States. It was named after American astrogeologist David Roddy.
5426 Sharp, provisional designation 1985 DD, is a bright Hungaria asteroid and suspected binary system from the inner regions of the asteroid belt, approximately 2–3 kilometers in diameter. It was discovered on 16 February 1985, by American astronomer Carolyn Shoemaker at Palomar Observatory, California, and named after American geologist Robert P. Sharp.
2074 Shoemaker, provisional designation 1974 UA, is a stony Hungaria asteroid, Mars-crosser and suspected synchronous binary system from the innermost regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 17 October 1974, by astronomer Eleanor Helin at the Palomar Observatory. She named it after American astronomer Eugene Shoemaker.
1656 Suomi is a binary Hungaria asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt. It was discovered on 11 March 1942, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, who named it "Suomi", the native name of Finland. The stony asteroid has a short rotation period of 2.6 hours and measures approximately 7.9 kilometers in diameter. In June 2020, a companion was discovered by Brian Warner, Robert Stephens and Alan Harris. The satellite measures more than 1.98 kilometers in diameter, about 26% of the primary, which it orbits once every 57.9 hours at an average distance of 30 kilometers.
15374 Teta, provisional designation 1997 BG, is bright, stony Hungaria asteroid from the inner regions of the asteroid belt, about 3.3 kilometers in diameter. It was discovered by Czech astronomers Miloš Tichý and Zdeněk Moravec at Kleť Observatory in South Bohemia on 16 January 1997. It is named after Teta from Czech mythology.
3198 Wallonia, provisional designation 1981 YH1, is a stony asteroid and sizable Mars-crosser from the inner regions of the asteroid belt, approximately 7.1 kilometers (4.4 miles) in diameter. It was discovered on 30 December 1981, by Belgian astronomer François Dossin at the Haute-Provence Observatory in France. The S/K-type asteroid has a rotation period of 7.5 hours. It was named after the French speaking region of Wallonia in Belgium.
4765 Wasserburg (prov. designation: 1986 JN1) is a bright Hungaria asteroid, suspected binary system and asteroid pair from the innermost regions of the asteroid belt, approximately 3 kilometers (1.9 miles) in diameter. It was discovered on 5 May 1986, by American astronomer Carolyn Shoemaker at Palomar Observatory, and later named after geologist Gerald J. Wasserburg.
1468 Zomba, provisional designation 1938 PA, is a stony asteroid and large Mars-crosser near the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Cyril Jackson at Johannesburg Observatory in 1938, the asteroid was named after the city of Zomba in the Republic of Malawi.
4440 Tchantchès, provisional designation 1984 YV, is a rather elongated Hungaria asteroid and a possible binary system from the inner regions of the asteroid belt, approximately 3 kilometers in diameter.
(6382) 1988 EL, is a stony Hungaria asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 14 March 1988, by American astronomer Jeffrey Alu at the U.S. Palomar Observatory, California.