| Discovery[1] | |
|---|---|
| Discovered by | G. Neujmin |
| Discovery site | Simeiz Obs. |
| Discovery date | 13 September 1931 |
| Designations | |
| (1202) Marina | |
Named after | Marina Lavrova–Berg[2] (Soviet scientist) |
| 1931 RL · 1931 TH 1980 BL3 · A924 WG A924 YA | |
| main-belt · (outer)[1] Hilda[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 92.99 yr (33,964 days) |
| Aphelion | 4.6621AU |
| Perihelion | 3.3339 AU |
| 3.9980 AU | |
| Eccentricity | 0.1661 |
| 7.99yr (2,920 days) | |
| 346.16° | |
| 0° 7m 23.88s / day | |
| Inclination | 3.3338° |
| 49.880° | |
| 307.45° | |
| Jupiter MOID | 0.7908 AU |
| Physical characteristics | |
| Dimensions | 54.93±2.6 km[5] 55.07 km (derived)[4] 63.76±1.28 km[6] |
| 9.45h[7] 9.571±0.0042 h[8] | |
| 0.026±0.001[6] 0.0337±0.003[5] 0.045 (derived)[4] | |
| Tholen =P[4] | |
| 9.756±0.001 (R)[8] · 10.0[1] · 10.09±0.23[9] · 10.28[4][7] · 10.60[5][6] | |
1202 Marina (provisional designation1931 RL) is a primitive Hildian backgroundasteroid from the outermost regions of theasteroid belt, approximately 55 kilometers in diameter. It was discovered byGrigory Neujmin at theSimeiz Observatory in 1931, and later named in honor of Marina Lavrova–Berg, a scientific collaborator atPulkovo Observatory, who died at an early age duringWWII.[3]
Marina was discovered on 13 September 1931, by Soviet astronomerGrigory Neujmin at theSimeiz Observatory on the Crimean peninsula.[3] Two nights later, it was independently discovered by German astronomerKarl Reinmuth at theHeidelberg Observatory on 15 September 1931.[2] TheMinor Planet Center only recognizes the first discoverer.[3]
The asteroid was first observed asA924 WG at Heidelberg Observatory in November 1924. The body'sobservation arc also begins at Heidelberg in January 1925, more than 6 years prior to its official discovery observation at Simeiz.[3]
Marina is a non-familybackground asteroid of theHilda group, located in theoutermost region of the main-belt and in a3:2 resonance with the giant planetJupiter.[10][4] It orbits the Sun at a distance of 3.3–4.7 AU once every 7 years and 12 months (2,920 days;semi-major axis of 4.00 AU). Its orbit has aneccentricity of 0.17 and aninclination of 3° with respect to theecliptic.[1]
In theTholen classification, Marina is a primitiveP-type asteroid.[4]
In the 1990s, a rotationallightcurve of Marina was obtained from a survey of Hildian asteroids by European astronomers. Lightcurve analysis gave a well-definedrotation period of 9.45 hours with a brightness variation of 0.29magnitude (U=3).[7] In October 2010, photometric observations in the R-band by astronomers at thePalomar Transient Factory in California gave a similar period of 9.571 hours and an amplitude of 0.09 (U=1).[8]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS and the JapaneseAkari satellite,Marina measures 54.93 and 63.76 kilometers in diameter and its surface has a lowalbedo of 0.0337 and 0.026, respectively.[5][6]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.045 and a diameter of 55.07 kilometers based on anabsolute magnitude of 10.28.[4]
Thisminor planet was named after Marina Davydovna Lavrova–Berg (1898–1943), a scientific collaborator who worked at thePulkovo Observatory near Saint Petersburg during 1931–1942.[2]
