(307261) 2002 MS4
From Infogalactic: the planetary knowledge core
| Discovery[1] | |
|---|---|
| Discovered by | Chad Trujillo, Michael E. Brown |
| Discovery date | 18 June 2002 |
| Designations | |
| MPC designation | 2002 MS4 |
| none | |
| Cubewano (MPC)[2] ScatExt (DES)[3] |
|
| Orbital characteristics[4] | |
| Epoch June 27, 2015 (2457200.5) | |
| Aphelion | 47.741 AU (7159.4 Gm) |
| Perihelion | 35.612 AU (5386.1 Gm) |
| 41.676 AU (6272.7 Gm) |
|
| Eccentricity | 0.14552 |
| 269.06 yr | |
|
Average orbital speed
|
4.58 km/s |
| 215.382° | |
| Inclination | 17.682° |
| 215.999° | |
| 215.614° | |
| Physical characteristics | |
| Dimensions | 934±47 km[5] |
| Albedo | 0.051+0.036 −0.022 [5] |
| Temperature | ≈ 43 K |
|
Spectral type
|
B−V=0.69; V−R=0.38 [6] |
| 20.6[7] | |
| 3.7[4] 3.5±0.4 (R-band)[5] |
|
(307261) 2002 MS4 is a large classical Kuiper belt object,[2] the second-largest known object in the Solar System without a name, after 2007 OR10. It was discovered in 2002 by Chad Trujillo and Michael Brown.
Brown's website lists it as nearly certain to be a dwarf planet.[8] The Spitzer Space Telescope estimated it to have a diameter of 726±123 km.[9] The Herschel team estimates it to be 934±47 km, which would make it one of the 10 largest TNOs currently known[5] and large enough to be considered a dwarf planet under the 2006 draft proposal of the IAU.[10] It is currently 47.2 AU from the Sun[7] and will come to perihelion in 2123.[4]
It has been observed 55 times, with precovery images back to 1954.[4]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 5.2 5.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Stansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope (2007) Preprint arXiv
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- 2002 MS4 Precovery Images
