1805 Dirikis
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Light-curve-based 3-D model of 1805 Dirikis
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|
| Discovery [1] | |
|---|---|
| Discovered by | L. Chernykh |
| Discovery site | CrAO - Nauchnyj |
| Discovery date | 1 April 1970 |
| Designations | |
| MPC designation | 1805 Dirikis |
|
Named after
|
Matiss Dirikis (astronomer)[2] |
| 1970 GD · 1942 EJ 1948 JH · 1948 JM 1950 TU1 · 1953 EL 1955 QL1 · 1959 JP 1962 WP · 1962 XC1 1964 FE |
|
| main-belt · Themis [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.67 yr (23,619 days) |
| Aphelion | 3.4910 AU |
| Perihelion | 2.7887 AU |
| 3.1399 AU | |
| Eccentricity | 0.1118 |
| 5.56 yr (2,032 days) | |
| 94.044° | |
| Inclination | 2.5159° |
| 78.939° | |
| 86.132° | |
| Physical characteristics | |
| Dimensions | 25.70 km[4] 22.05±1.37 km[5] 28.098±0.238 km[6] 25.57 km (derived)[3] |
| 23.0 h[7] 23.4543 h[8] |
|
| 0.1065[4] 0.145±0.019[5] 0.0893±0.0076[6] 0.0816 (derived)[3] |
|
| S [3] | |
| 11.4 | |
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1805 Dirikis, provisional designation 1970 GD, is a stony asteroid from the outer region of the asteroid belt, about 26 kilometers in diameter. It was discovered by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 1 April 1970.[9]
The S-type asteroid belongs to the Themis family. It orbits the Sun at a distance of 2.8–3.5 AU once every 5 years and 7 months (2,032 days). Several observations gave a varying albedo from 0.082 to 0.15. It has a rotation period of about 23 hours, depending on the respective measurements.[7][8]
The asteroid was named after Matiss A. Dirikis (1923–1993), who was a member of the Astronomical Observatory at the University of Latvia, and chairman of the Latvian branch of the Astronomical–Geodetical Society of the U.S.S.R.. His work on the motion of small Solar System bodies also contributed to the field of theoretical astronomy.[2]
References
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<references />, or <references group="..." />External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Geneve, Raoul Behrend
- 1805 Dirikis at the JPL Small-Body Database
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