(229762) 2007 UK126
|
(229762) 2007 UK126 photographed by the UK Schmidt Telescope. | |
| Discovery[1] | |
|---|---|
| Discovered by |
M. E. Schwamb M. E. Brown D. L. Rabinowitz |
| Discovery date | October 19, 2007 |
| Designations | |
| MPC designation | (229762) 2007 UK126 |
| Scat-ext[2][3] | |
| Orbital characteristics[4] | |
| Epoch September 30, 2012 (JD 2456200.5) | |
| Aphelion | 111.1426 AU (Q) |
| Perihelion | 37.6252 AU (q) |
| 74.3839 AU (a) | |
| Eccentricity | 0.4942 |
| 640.55 a (234324.7 d) | |
| 341.36848° (M) | |
| Inclination | 23.34941° |
| 131.22344° | |
| 345.79987° | |
| Known satellites | 1[5][6] |
| Physical characteristics | |
| Dimensions |
599±77 km[6] 612 km[7] |
| Albedo |
0.167+0.058 −0.038[6] |
| 20.8[1] | |
|
3.69±0.10[6] 3.43[4] | |
|
| |
(229762) 2007 UK126, also written as (229762) 2007 UK126, is a scattered disc object (SDO) with a bright absolute magnitude of 3.7.[6] This makes it probably a dwarf planet. As of August 2011, Mike Brown lists it as highly likely a dwarf planet.[8] Its light-curve amplitude is estimated to be Δm=0.111 mag.[9]
Its orbital eccentricity of 0.49 suggests that it was gravitationally scattered onto its eccentric orbit. It will come to perihelion in February 2046.[4]
It has been observed 73 times over 11 oppositions with precovery images back to 1982.[4]
Satellite
It has been reported that (229762) 2007 UK126 has a satellite, but a mass estimate has not been made.[6] The magnitude difference between the primary and the satellite is 3.79 mag. The satellite has a tentative diameter of 139 km, a semi-major axis of 3600 km, and an orbital period of 3.7 d.[5]
See also
References
- 1 2 "2007 UK126". Minor Planet Electronic Circ., 2008-D38 (2008). Bibcode:2008MPEC....D...38S. Retrieved 2008-07-11.
- ↑ Marc W. Buie (2012-05-08). "Orbit Fit and Astrometric record for 229762". SwRI (Space Science Department). Retrieved 2012-05-07.
- ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 2012-05-07.
- 1 2 3 4 "JPL Small-Body Database Browser: 229762 (2007 UK126)" (2013-12-01 last obs and observation arc=31 years). Retrieved 2012-08-27.
- 1 2 (229762) 2007 UK126, Johnston's Archive. Last updated 20 September 2011
- 1 2 3 4 5 6 Santos-Sanz, P.; Lellouch, E.; Fornasier, S.; Kiss, C.; Pal, A.; Müller, T. G.; Vilenius, E.; Stansberry, J.; Mommert, M.; Delsanti, A.; Mueller, M.; Peixinho, N.; Henry, F.; Ortiz, J. L.; Thirouin, A.; Protopapa, S.; Duffard, R.; Szalai, N.; Lim, T.; Ejeta, C.; Hartogh, P.; Harris, A. W.; Rengel, M. (2012). ""TNOs are Cool": A survey of the trans-Neptunian region IV. Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel-PACS". Astronomy & Astrophysics 541: A92. arXiv:1202.1481. Bibcode:2012A&A...541A..92S. doi:10.1051/0004-6361/201118541.
- ↑ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)"
- ↑ Michael E. Brown (May 7, 2012). "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2012-05-07.
- ↑ Roland, S., Bruzzone, S., Nowajewski, P., Tancredi, G., Barrera, L., Martinez, M., Troncoso, P., & Vasquez, S. (2009). Lightcurves of Icy “Dwarf Planets” (Plutoids)
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 2007 UK126 Precovery Images
- 3rd largest scattered disk object discovered (Yahoo Groups)
- 2007 UK126 Minor planet designation number
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