4587 Rees
From Wikipedia, the free encyclopedia
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Discovery[2] and designation
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| Discovered by | C. J. van Houten, I. van Houten-Groeneveld and T. Gehrels |
| Discovery date | September 30, 1973 |
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Designations
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| Alternative names[1] | 3239 T-2 |
| Minor planet category |
Amor |
| Epoch February 04, 2008 (JD 2454500.5) | |
| Aphelion | 600.024 Gm (4.011 AU) |
| Perihelion | 193.687 Gm (1.295 AU) |
| Semi-major axis | 396.856 Gm (2.653 AU) |
| Eccentricity | 0.512 |
| Orbital period | 1578.189 d (4.32 a) |
| Average orbital speed | 17.02 km/s |
| Mean anomaly | 19.001° |
| Inclination | 24.641° |
| Longitude of ascending node | 180.646° |
| Dimensions | ? km |
| Mass | ?×10? kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | ? m/s² |
| Equatorial escape velocity | ? km/s |
| Sidereal rotation period |
0.32453 d (7.7886 h)[2] |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10? |
| Temperature | ~171 K |
| Spectral type | ? |
| Absolute magnitude | 15.6 |
4587 Rees is an Amor asteroid discovered on September 30, 1973 at the Palomar Observatory by C. J. van Houten, I. van Houten-Groeneveld and T. Gehrels.[3] The Provisional designation given to 4587 Rees was 3239 T-2. It has a rotation period of 7.7886 hours.[2] 4587 Rees was named in honor of Sir Martin Rees. Naming it after Martin Rees was proposed by Jan Hendrik Oort.[4]
Rees sometimes makes close approaches to Mars. In 2072 it will pass about 21 Gm from the Red Planet, the closest since the 1843 16 Gm one.
[edit] External links
[edit] References
- ^ [1]
- ^ a b Physical parameters of NEOs (html). European Asteroid Research Node. Retrieved on 2007-12-08.
- ^ Discovery Circumstances: Numbered Minor Planets (1)-(5000) (html). IAU: Minor Planet Center. Retrieved on 2007-12-08.
- ^ Schmadel, L. D. (2003). The Dictionary of Minor Planet Names, 5th edition, Germany: Springer Science+Business Media. ISBN 3540002383.
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