Discovery [1] | |
---|---|
Discovered by | |
Discovery site | Palomar Obs. |
Discovery date | 3 June 1992 |
Designations | |
(8034) Akka | |
Named after | Akka (Finnish mythology) [2] |
1992 LR | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 23.78 yr (8,687 days) |
Aphelion | 2.5787 AU |
Perihelion | 1.0817 AU |
1.8302 AU | |
Eccentricity | 0.4090 |
2.48 yr (904 days) | |
49.897° | |
0° 23m 53.16s / day | |
Inclination | 2.0241° |
232.87° | |
68.173° | |
Earth MOID | 0.0742 AU (28.9 LD) |
Physical characteristics | |
Dimensions | |
S [4] | |
8034 Akka, provisional designation 1992 LR, is a sub-kilometer sized, eccentric asteroid and near-Earth object of the Apollo group, approximately 540 meters in diameter. It was discovered at Palomar Observatory in 1992, and named after Akka from Finnish mythology.
Akka was discovered by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory, California, on 3 June 1992. The discovery was made as the asteroid neared a close approach to Earth the following month at 12.1 million kilometers or 31.5 lunar distances (LD). [9] [10]
Akka orbits the Sun at a distance of 1.1–2.6 AU once every 2 years and 6 months (904 days). Its orbit has an eccentricity of 0.41 and an inclination of 2° with respect to the ecliptic. [1] The first observation was made at Siding Spring Observatory in May 1992, extending the asteroid's observation arc by just two weeks prior to its discovery. [9]
With an Earth minimum orbit intersection distance of 0.0742 AU (11,100,000 km) or 28.9 LD, Akka is only slightly above the threshold-limit of 0.05 AU, or about 19.5 lunar distances, defined for potentially hazardous asteroids. [1]
Akka frequently makes close approaches to Earth and Mars. Its closest recorded approach to Earth and Mars is 0.081 AU on 29 July 1992 and 0.061 AU on 26 April 1982, respectively. It will make its closest approach to another planet when it comes within 0.044 AU of Mars on 6 April 2171. [10]
A rotational lightcurve of Akka was obtained from photoelectric observation made by Polish astronomer Wiesław Wiśniewski of the University of Arizona in August 1992. The ambiguous lightcurve gave a rotation period of 7.283±0.004 hours with a brightness variation of 0.46 in magnitude ( U=2 ). [7] Alternatively, the body rotates once every 3.6377 hours (or half the previous period) with an amplitude of 0.52, as determined by Czech astronomer Petr Pravec ( U=2 ). [6]
According to Spitzer's "NEOSurvey", a follow-up to the "ExploreNEOs" program, Akka measures 0.540 kilometers in diameter and its surface has a high albedo of 0.33. [3] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 0.7 kilometers with an absolute magnitude of 18.148. [4]
This minor planet was named after Akka from Finnish mythology. She is the Earth's mother and the goddess of harvest and personifies love, agriculture and femininity. Akka is the wife of the principal sky deity Ukko, after whom the minor planet 2020 Ukko is named. [2] The official naming citation was published by the Minor Planet Center on 24 July 2002 ( M.P.C. 46101). [11]
2063 Bacchus, provisional designation 1977 HB, is a stony asteroid and near-Earth object of the Apollo group, approximately 1 kilometer in diameter. The contact binary was discovered on 24 April 1977, by American astronomer Charles Kowal at the Palomar Observatory in California, United States. It was named after Bacchus from Roman mythology.
4183 Cuno, provisional designation 1959 LM, is an eccentric, rare-type asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, and measures approximately 4 kilometers in diameter.
4197 Morpheus, provisional designation 1982 TA, is a highly eccentric asteroid and near-Earth object of the Apollo group, approximately 3 kilometers in diameter. It was discovered on 11 October 1982, by American astronomers Eleanor Helin and Eugene Shoemaker at Palomar Observatory in California, United States. The asteroid was later named for Morpheus from Greek mythology.
3352 McAuliffe, provisional designation 1981 CW, is a rare-type asteroid and suspected binary system, classified as near-Earth object of the Amor group, approximately 2 kilometers in diameter. It was discovered on 6 February 1981, by American astronomer Norman Thomas at Lowell's Anderson Mesa Station near Flagstaff, Arizona, United States.
1981 Midas, provisional designation 1973 EA, is a vestoid asteroid, classified as a near-Earth object and potentially hazardous asteroid, approximately 2 kilometers in diameter.
2100 Ra-Shalom is an asteroid and near-Earth object of the Aten group on an eccentric orbit in the inner Solar System. It was discovered on 10 September 1978, by American astronomer Eleanor Helin at the Palomar Observatory, California, who named it in commemoration of the Camp David Peace Accords. The C-type asteroid has a rotation period of 19.8 hours and measures approximately 2.7 kilometers in diameter.
1065 Amundsenia, provisional designation 1926 PD, is a stony asteroid and sizeable Mars-crosser on an eccentric orbit from the inner asteroid belt, approximately 10 kilometers in diameter. It was discovered on 4 August 1926, by Soviet astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Norwegian polar explorer Roald Amundsen.
1943 Anteros, provisional designation 1973 EC, is a spheroidal, rare-type asteroid and near-Earth object of the Amor group, approximately 2 kilometers in diameter.
1916 Boreas, provisional designation 1953 RA, is an eccentric, stony asteroid and near-Earth object of the Amor group, approximately 3 kilometers in diameter. After its discovery in 1953, it became a lost asteroid until 1974. It was named after Boreas from Greek mythology.
4957 Brucemurray, provisional designation 1990 XJ, is a stony asteroid, classified as near-Earth object of the Amor group and as Mars-crosser, approximately 3 kilometers in diameter. It was discovered by American astronomer Eleanor Helin at the Palomar Observatory in California on 15 December 1990. The asteroid was named after American planetary scientist Bruce C. Murray.
8013 Gordonmoore, provisional designation 1990 KA, is an eccentric, stony asteroid and near-Earth object of the Apollo group, approximately 1–2 kilometers in diameter.
3102 Krok, provisional designation 1981 QA, is a rare-type asteroid and slow rotator, classified as a near-Earth object of the Amor group, that measures approximately 1.5 kilometers in diameter.
4055 Magellan, provisional designation 1985 DO2, is a bright and eccentric asteroid and near-Earth object of the Amor group, approximately 2.5 kilometers in diameter. It was discovered on 24 February 1985, by American astronomer Eleanor Helin at Palomar Observatory in California, United States. It was later named for Portuguese explorer Ferdinand Magellan.
4341 Poseidon is a rare-type asteroid classified as near-Earth object of the Apollo group, approximately 2.3 kilometers in diameter. It was discovered by American astronomer Carolyn Shoemaker at Palomar Observatory on 29 May 1987. The asteroid was named after Poseidon from Greek mythology.
7336 Saunders, provisional designation 1989 RS1, is a stony asteroid and near-Earth object of the Amor group, approximately 0.5 kilometers in diameter.
4082 Swann, provisional designation 1984 SW3, is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter.
12923 Zephyr (prov. designation:1999 GK4) is a stony asteroid, classified as potentially hazardous asteroid and near-Earth object of the Apollo group, approximately 2 kilometers (1.2 miles) in diameter. It was discovered on 11 April 1999, by astronomers of the Lowell Observatory Near-Earth Object Search at Anderson Mesa Station near Flagstaff, Arizona. The asteroid was named after the deity Zephyrus from Greek mythology.
(31345) 1998 PG is an eccentric, stony asteroid and binary system, classified as near-Earth object of the Amor group of asteroids, approximately 900 meters in diameter. It minor-planet moon, S/2001 (31345) 1, has an estimated diameter of 270 meters.
(86039) 1999 NC43, is an asteroid on an eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 2 kilometers in diameter. This suspected tumbler and relatively slow rotator was discovered by LINEAR in 1999.
21088 Chelyabinsk, provisional designation 1992 BL2, is a stony asteroid and near-Earth object of the Amor group, approximately 4 kilometers in diameter. It was discovered on 30 January 1992, by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile. The asteroid was named after the Russian city of Chelyabinsk and for its spectacular Chelyabinsk meteor event in 2013.