| Discovery [1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 4 March 1975 |
| Designations | |
| (4185) Phystech | |
Named after | Moscow Institute of Physics and Technology [1] |
| 1975 ED ·1982 KD 1982 KH4 ·1988 BT | |
| main-belt [1] [2] ·(inner) background [3] [4] · Flora [5] | |
| Orbital characteristics [2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.48 yr (23,550 d) |
| Aphelion | 2.4339 AU |
| Perihelion | 2.0008 AU |
| 2.2174 AU | |
| Eccentricity | 0.0977 |
| 3.30 yr (1,206 d) | |
| 311.69° | |
| 0° 17m 54.6s / day | |
| Inclination | 2.2303° |
| 265.78° | |
| 320.99° | |
| Physical characteristics | |
Mean diameter | 5.93 km (calculated) [5] |
| 4.66883±0.00014 h [6] 4.66904±0.00003 h [6] | |
| 0.24(assumed) [5] | |
| S (assumed) [5] | |
| 13.3 [2] [5] | |
4185 Phystech, provisional designation 1975 ED, is a Florian or background asteroid from the inner regions of the asteroid belt, approximately 6 kilometers (4 miles) in diameter. It was discovered on 4 March 1975, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. [1] The presumed S-type asteroid has a rotation period of 4.67 hours. It is named in honor of the Moscow Institute of Physics and Technology ("PhysTech") on its 50th anniversary. [1]
Phystech is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [3] [4] Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family ( 402 ), a giant asteroid family and the largest family of stony asteroids in the main-belt. [5]
It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,206 days; semi-major axis of 2.22 AU). Its orbit has an eccentricity of 0.10 and an inclination of 2° with respect to the ecliptic. [2] The body's observation arc begins with a precovery taken at Palomar Observatory in October 1953, more than 21 years prior to its official discovery observation at Nauchnij. [1]
Phystech is an assumed stony S-type asteroid, based on its family classification. [5]
In March and April 2008, two rotational lightcurves of Phystech were obtained from photometric observations by American astronomers at LPL and Calvin College ( H62 ). Lightcurve analysis gave a well-defined rotation period of 4.66883 and 4.66904 hours with a brightness amplitude of 0.53 and 0.41 magnitude, respectively ( U=3/3 ). [6]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 5.93 kilometers based on an absolute magnitude of 13.3. [5]
This minor planet was named after the Moscow Institute of Physics and Technology (informally: "PhysTech"; Физтех) on the occasion of its 50th anniversary in 1996, based on a proposal by the Institute of Theoretical Astronomy (ITA) in Saint Petersburg, Russia. [1] The official naming citation was published by the Minor Planet Center on 22 February 1997 ( M.P.C. 29143). [7]
3850 Peltier, provisional designation 1986 TK2, is a Florian asteroid and suspected interloper from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 7 October 1986, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station, near Flagstaff, Arizona. The asteroid was named after American amateur astronomer Leslie Peltier.
13241 Biyo, provisional designation 1998 KM41, is a background asteroid from the Flora region of the inner asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 22 May 1998, by the Lincoln Near-Earth Asteroid Research team (LINEAR) at the U.S. Lincoln Laboratory Experimental Test Site in Socorro, New Mexico. The presumed S-type asteroid has a rotation period of 4.4 hours and likely an elongated shape. It was later named after Filipino educator Josette Biyo.
3204 Lindgren, provisional designation 1978 RH, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 1 September 1978, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The B-type asteroid has a rotation period of 5.6 hours. It was named after Swedish writer Astrid Lindgren.
24105 Broughton, provisional designation 1999 VE10, is a background asteroid from the inner regions of the asteroid belt, approximately 3.7 kilometers (2.3 miles) in diameter. The assumed S-type asteroid was discovered on 9 November 1999, by American amateur astronomer Charles W. Juels at the Fountain Hills Observatory (678) in Arizona, United States. It has a rotation period of 15.9 hours and was named after Australian amateur astronomer John Broughton.
9000 Hal, provisional designation 1981 JO, is a stony background asteroid and slow rotator from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 3 May 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona, in the United States. The likely elongated S-type asteroid has an exceptionally long rotation period of 908 hours. It was named after the homicidal supercomputer HAL 9000, featured in the movie 2001: A Space Odyssey.
6395 Hilliard, provisional designation 1990 UE1, is a stony Nysian asteroid from the inner regions of the asteroid belt, approximately 4.5 kilometers in diameter.
5385 Kamenka, provisional designation 1975 TS3, is a background asteroid from the outer regions of the asteroid belt, approximately 16 kilometers (10 miles) in diameter. It was discovered on 3 October 1975, by Soviet astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The presumed C-type asteroid has a rotation period of 6.68 hours. It was named for the Ukrainian town of Kamianka.
9344 Klopstock, provisional designation 1991 RB4, is a background asteroid from the inner regions of the asteroid belt. It was discovered on 12 September 1991, by German astronomers Freimut Börngen and Lutz Schmadel at the Karl Schwarzschild Observatory in Tautenburg, Germany. Poor observational data suggests that the asteroid is one of the darkest known objects with a diameter of approximately 17 kilometers (11 miles), while it is also an assumed stony asteroid with a much smaller diameter. It has a rotation period of 5.84 hours and was named after German poet Friedrich Gottlieb Klopstock.
3240 Laocoon is a carbonaceous Jupiter trojan from the Trojan camp, approximately 51 kilometers in diameter. It was discovered on 7 November 1978, by American astronomers Eleanor Helin and Schelte Bus at Palomar Observatory in California. The D-type asteroid belongs to the 100 largest Jupiter trojans and has a rotation period of 11.3 hours. It was named after Laocoön from Greek mythology.
8441 Lapponica, provisional designation 4008 T-3, is a background asteroid from the Florian region of the inner asteroid belt, approximately 4.5 kilometers in diameter. It was discovered on 16 October 1977, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California. The L-type asteroid has a rotation period of 3.27 hours. It was named for the Bar-tailed godwit, a shorebird also known by its Latin name Limosa lapponica.
2213 Meeus, provisional designation 1935 SO1, is a bright background asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 24 September 1935, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The presumed S-type asteroid has a short rotation period of 2.65 hours. It was named for Belgian amateur astronomer and meteorologist Jean Meeus.
3406 Omsk, provisional designation 1969 DA, is a background asteroid from the central regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 21 February 1969, by Soviet astronomer Bella Burnasheva at the Crimean Astrophysical Observatory on the Crimean peninsula in Nauchnij. The possibly metallic M/X-type asteroid has a rotation period of 7.3 hours. It was named for the Russia city of Omsk.
13154 Petermrva, provisional designation 1995 RC, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 4.2 kilometers in diameter. It was discovered on 7 September 1995, by Slovak astronomers Adrián Galád and Alexander Pravda at the Modra Observatory in the Bratislava Region of Slovakia. The asteroid was named after Slovak amateur astronomer Peter Mrva.
2975 Spahr, provisional designation 1970 AF1, is a bright background asteroid from the Flora region of the inner asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 8 January 1970, by Russian astronomers Hejno Potter and A. Lokalov at the Cerro El Roble Station near Santiago, Chile. The S- or A-type asteroid has a rotation period of 11.9 hours. It was named for Timothy Spahr, an American astronomer and former director of the Minor Planet Center.
4786 Tatianina, provisional designation 1985 PE2, is a bright background asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 3.4 kilometers (2.1 miles) in diameter. It was discovered on 13 August 1985, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named after Tatiana Somova, a friend of the discoverer. The E-/Xc-subtype has a short rotation period of 2.9 hours. Its sub-kilometer minor-planet moon was discovered on 20 March 2006 and announced the following month.
2862 Vavilov, provisional designation 1977 JP, is a stony background asteroid and exceptionally slow rotator from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 15 May 1977, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The asteroid was named after Russian plant geneticist Nikolai Vavilov and his physicist brother Sergey Ivanovich Vavilov.
3669 Vertinskij, provisional designation 1982 UO7, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6.5 kilometers (4 miles) in diameter. It was discovered on 21 October 1982, by Soviet astronomer Lyudmila Karachkina at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The S-type asteroid was named for Russian artist Alexander Vertinsky.
2903 Zhuhai, provisional designation 1981 UV9, is a stony background or Marian asteroid from the central regions of the asteroid belt, approximately 14 kilometers (8.7 miles) in diameter. It was discovered on 23 October 1981, by astronomers at Purple Mountain Observatory near Nanking, China. The S-type asteroid has a rotation period of 5.26 hours. It was named for the Chinese city of Zhuhai.
3703 Volkonskaya, provisional designation 1978 PU3, is a Vestian asteroid and asynchronous binary system from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 9 August 1978, by Soviet astronomers Lyudmila Chernykh and Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named by the discoverers after the Russian princess Mariya Volkonskaya. The V-type asteroid has a rotation period of 3.2 hours. The discovery of its 1.4-kilometer minor-planet moon was announced in December 2005.
(11436) 1969 QR, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3.7 kilometers in diameter. It was discovered on 22 August 1969, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany.
