2010 KZ39
|
Follow-up images of 2010 KZ39 taken at Las Campanas Observatory | |
| Discovery[1] | |
|---|---|
| Discovered by |
A. Udalski S. S. Sheppard M. Szymanski C. Trujillo Las Campanas Observatory (304) |
| Discovery date | May 21, 2010 |
| Designations | |
| MPC designation | 2010 KZ39 |
|
TNO Detached (SDO-EXT)[2] Cubewano[3] | |
| Orbital characteristics[2][4] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 5 | |
| Observation arc | 669 days (1.83 yr) |
| Aphelion | 47.718 AU (7.1385 Tm) (Q) |
| Perihelion | 42.830 AU (6.4073 Tm) (q) |
| 45.274 AU (6.7729 Tm) (a) | |
| Eccentricity | 0.053980 (e) |
| 304.63 yr (111267 d) | |
| 252.10° (M) | |
| Inclination | 26.057° (i) |
| 53.142° (Ω) | |
| 316.76° (ω) | |
| Earth MOID | 41.8746 AU (6.26435 Tm) |
| Jupiter MOID | 38.0385 AU (5.69048 Tm) |
| Physical characteristics | |
| Dimensions |
≈600 km (assuming an albedo of 0.10)[5] 420–940 km[4][6] |
| 20.7[7] | |
| 4.0[4] | |
|
| |
2010 KZ39, also written as 2010 KZ39, is a trans-Neptunian object with an absolute magnitude of 4.0.[4] Mike Brown's website lists it as likely a dwarf planet.[5]
Although more research is needed, it appears to orbit the Sun every 302 years, putting it in the same range as Makemake, Chaos and other objects that circle the Sun in 6:11 resonance to Neptune.
Characteristics
It has been observed 28 times[3][4] over three oppositions[3] and, as of 2014, is 46.2 AU from the Sun.[7] Using the best-fit values for its orbit, it is expected to come to perihelion in 2109.[4]
Brown assumes an albedo of 0.10, resulting in an estimated diameter of 600 kilometres (370 mi).[5] However, because the albedo is unknown and it has a preliminary absolute magnitude of 4.0,[4] its diameter could easily fall between 420 and 940 km[6] for an assumed albedo between 0.25 and 0.05, respectively.[8])
References
- ↑ "MPEC 2010-L38 : 2010 KZ39". IAU Minor Planet Center. 2010-06-08. Retrieved 2010-12-03.
- 1 2 Marc W. Buie. "Orbit Fit and Astrometric record for 10KZ39" (last observation: 2012-03-20 using 28 of 28 observations over 1.83 years). SwRI (Space Science Department). Retrieved 2011-08-18.
- 1 2 3 "2010 KZ39 Orbit". IAU Minor Planet Center. Retrieved 2011-08-18.
- 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: (2010 KZ39)" (last observation: 2012-03-20; arc: 1.83 years). Retrieved 31 March 2016.
- 1 2 3 Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2014-04-07.
- 1 2 "Absolute Magnitude (H)". NASA/JPL. Retrieved 2011-07-19.
- 1 2 "AstDyS: 2010 KZ39 Ephemerides". AstDyS. Retrieved 2014-04-07.
- ↑ Dan Bruton. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics & Astronomy (Stephen F. Austin State University). Archived from the original on 23 July 2011. Retrieved 2011-08-18.
External links
- Large New Trans-Neptunian Object 2010 KZ39 Discovered (BAA Blog : 9 June 2010)
- OCKS: OGLE Carnegie Kuiper belt Survey (OCKS is a Southern sky survey searching for Kuiper Belt objects and dwarf planets)
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 2010 KZ39 at the JPL Small-Body Database
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