(307261) 2002 MS4
![]() Orbit of 2002 MS4 is similar but more inclined than 50000 Quaoar. Positions on 1/1/2018 are shown. | |
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 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 3 | |
Observation arc | 20569 days (56.31 yr) |
Earliest precovery date | April 8, 1954 |
Aphelion | 47.740 AU (7.1418 Tm) |
Perihelion | 35.694 AU (5.3397 Tm) |
41.717 AU (6.2408 Tm) | |
Eccentricity | 0.14439 |
269.45 yr (98415.8 d) | |
Average orbital speed | 4.58 km/s |
216.187° | |
0° 0m 13.168s / day | |
Inclination | 17.677° |
215.963° | |
215.534° | |
Earth MOID | 34.7228 AU (5.19446 Tm) |
Jupiter MOID | 30.7148 AU (4.59487 Tm) |
TJupiter | 5.464 |
Physical characteristics | |
Dimensions | ±47 km 934[5] |
+0.036 −0.022 0.051[5] | |
Temperature | ≈ 43 K |
B−V=0.69; V−R=0.38 [6] | |
20.6[7] | |
3.7[4] ±0.4 (R-band) 3.5[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 (225088) 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 ±123 km. 726[9] The Herschel team estimates it to be ±47 km, which would make it one of the 10 largest TNOs currently known 934[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 April 8, 1954.[4]
References
- ↑ "MPEC 2002-W27 : 2002 MS4, 2002 QX47, 2002 VR128". IAU Minor Planet Center. 2002-11-21. Retrieved 2009-08-26.
- 1 2 "MPEC 2009-P26 :Distant Minor Planets (2009 AUG. 17.0 TT)". IAU Minor Planet Center. 2009-08-07. Retrieved 2009-08-31.
- ↑ Marc W. Buie (2008-05-03). "Orbit Fit and Astrometric record for 02MS4". SwRI (Space Science Department). Archived from the original on 4 June 2011. Retrieved 2009-08-31.
- 1 2 3 4 "JPL Small-Body Database Browser: 307261 (2002 MS4)" (2009-09-19 last obs.). Jet Propulsion Laboratory. Retrieved 7 April 2016.
- 1 2 3 4 Vilenius, E.; Kiss, C.; Mommert, M.; et al. (2012). ""TNOs are Cool": A survey of the trans-Neptunian region VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects". Astronomy & Astrophysics. 541: A94. arXiv:1204.0697. Bibcode:2012A&A...541A..94V. doi:10.1051/0004-6361/201118743.
- ↑ Tegler, Stephen C. (2006-01-26). "Kuiper Belt Object Magnitudes and Surface Colors". Archived from the original on November 16, 2007. Retrieved 2006-11-05.
- 1 2 "AstDyS 2002MS4 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-09-04. Retrieved 2009-08-27.
- ↑ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Archived from the original on 2011-10-18. Retrieved 2011-08-25.
- ↑ Stansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope (2007) Preprint arXiv
- ↑ Gingerich, Owen (2006-08-16). "The Path to Defining Planets" (PDF). Harvard-Smithsonian Center for Astrophysics and IAU EC Planet Definition Committee chair. p. 4. Retrieved 2007-03-13.
External links
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