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Discovery
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| Discovered by | Schelte J. Bus |
| Discovery date | July 24, 1979 |
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Designations
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| Alternate name(s) | 1979 OB9; 1982 JC2; 1983 VH7 |
| Minor planet category |
Main belt |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 409.941 Gm (2.740 AU) |
| Perihelion | 285.382 Gm (1.908 AU) |
| Semi-major axis | 347.662 Gm (2.324 AU) |
| Eccentricity | 0.179 |
| Orbital period | 1294.033 d (3.54 a) |
| Average orbital speed | 19.38 km/s |
| Mean anomaly | 145.497° |
| Inclination | 5.019° |
| Longitude of ascending node | 212.600° |
| Argument of perihelion | 173.158° |
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Physical characteristics
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| Dimensions | ? km |
| Mass | ?×10? kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | ? m/s² |
| Escape velocity | ? km/s |
| Rotation period | ? d |
| Albedo | 0.10? |
| Temperature | ~183 K |
| Spectral type | ? |
| Absolute magnitude (H) | 13.9 |
7004 Markthiemens is an asteroid named after Mark Thiemens, Dean of the Division of Physical Sciences at the University of California, San Diego. [1] †
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