4587 Rees
| Discovery[1] | |
|---|---|
| Discovered by | Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels |
| Discovery date | 30 September 1973 |
| Designations | |
|
Named after
|
Martin Rees |
| 3239 T-2 | |
| former Amor[1] Mars-crosser[2] |
|
| Orbital characteristics[3][2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 20264 days (55.48 yr) |
| Aphelion | 4.01163 AU (600.131 Gm) |
| Perihelion | 1.30696 AU (195.518 Gm) |
| 2.65930 AU (397.826 Gm) | |
| Eccentricity | 0.50853 |
| 4.34 yr (1584.0 d) | |
|
Average orbital speed
|
17.02 km/s |
| 319.808° | |
| Inclination | 24.6284° |
| 180.408° | |
| 83.9158° | |
| Earth MOID | 0.536744 AU (80.2958 Gm) |
| Jupiter MOID | 2.00921 AU (300.574 Gm) |
| Physical characteristics | |
| Dimensions | 2–5 km H |
| 7.7886 h (0.32453 d) | |
|
Sidereal rotation period
|
0.32453 d (7.7886 h)[4] |
| Temperature | ~171 K |
| 15.3 | |
4587 Rees is a former Amor asteroid[1] discovered on September 30, 1973 at the Palomar Observatory by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels.[5] The Provisional designation given to 4587 Rees was 3239 T-2. It has a rotation period of 7.7886 hours.[4] 4587 Rees was named in honor of Martin Rees. Naming it after Professor Lord Rees was proposed by Jan Hendrik Oort.[6]
On 2072-Jul-03 Rees will pass 0.13828 AU (20,686,000 km; 12,854,000 mi) from Mars, the closest since it passed 0.1057 AU (15,810,000 km; 9,830,000 mi) from Mars on 1843-Jan-28. On 2121-Jan-30, Rees will pass 0.0475 AU (7,110,000 km; 4,420,000 mi) from 4 Vesta.[2]
NEO status
Since all Near-Earth objects (NEOs) have a closest approach to the Sun (perihelion) of less than 1.3 AU,[7] depending on the epoch chosen, the orbital parameters of 4587 Rees will not always qualify it as a NEO. In 2012 it was an amor asteroid.[1][8] As of 2014, Rees has a perihelion of 1.3011 AU and does not meet the requirement to be defined as a NEO.[9]
References
- ↑ 1.0 1.1 1.2 Webcite of Epoch 2010-Jan-04
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ archive is:DSzY with Epoch 2012-Sep-30
- ↑ Lua error in package.lua at line 80: module 'strict' not found. (Select Ephemeris Type: Elements)
