Astronomy:(40314) 1999 KR16
Hubble Space Telescope image of 1999 KR16 taken in 2010 | |
Discovery[1] | |
---|---|
Discovered by | A. Dalsanti O. R. Hainaut |
Discovery site | La Silla Obs. |
Discovery date | 16 May 1999 |
Designations | |
(40314) 1999 KR16 | |
1999 KR16 | |
Minor planet category | TNO[2] · other[3] · distant[1] |
Orbital characteristics[2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 2 | |
Observation arc | 16.09 yr (5,878 d) |
|{{{apsis}}}|helion}} | 64.604 AU |
|{{{apsis}}}|helion}} | 33.968 AU |
49.286 AU | |
Eccentricity | 0.3108 |
Orbital period | 346.02 yr (126,383 d) |
Mean anomaly | 347.77° |
Mean motion | 0° 0m 10.08s / day |
Inclination | 24.771° |
Longitude of ascending node | 205.57° |
|{{{apsis}}}|helion}} | ≈ 26 February 2030[4] |
58.419° | |
Physical characteristics | |
Mean diameter | 254±37 km[5] 255 km (est.)[6] |
Rotation period | 5.8 h (half period?)[7] 11.7 h[8] |
Geometric albedo | 0.204±0.070[5] |
RR (very red)[9] | |
Absolute magnitude (H) | 5.5[1][2] 5.527±0.039 (R)[10] 5.7[2] 5.59±0.02 (R)[11] |
(40314) 1999 KR16 is a trans-Neptunian object on an eccentric orbit in the outermost region of the Solar System, approximately 254 kilometers (158 miles) in diameter. It was discovered on 16 May 1999, by French astronomer Audrey Delsanti and Oliver Hainaut at ESO's La Silla Observatory in northern Chile.[1] The very reddish object is a dwarf planet candidate and has a rotation period of 11.7 hours.[6][12]
Orbit and classification
The minor planet orbits the Sun at a distance of 34–65 AU once every 346 years (126,383 days; semi-major axis of 49.29 AU). Its orbit has an eccentricity of 0.31 and an inclination of 25° with respect to the ecliptic.[2]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 26 May 2002.[13] As of 2019, it has not been named.[1]
Physical characteristics
1999 KR16 has two solutions of its rotation period of 6 and 12 hours, respectively,[7][8] and an albedo of 0.20.[5]
References
- ↑ Jump up to: 1.0 1.1 1.2 1.3 1.4 "40314 (1999 KR16)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=40314. Retrieved 11 September 2018.
- ↑ Jump up to: 2.0 2.1 2.2 2.3 2.4 "JPL Small-Body Database Browser: 40314 (1999 KR16)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2040314. Retrieved 11 September 2018.
- ↑ Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 3 December 2018.
- ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
- ↑ Jump up to: 5.0 5.1 5.2 Santos-Sanz, P.; Lellouch, E.; Fornasier, S.; Kiss, C.; Pal, A.; Müller, T. G.; Vilenius, E. et al. (May 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: 18. doi:10.1051/0004-6361/201118541. Bibcode: 2012A&A...541A..92S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...541A..92S. Retrieved 2 December 2015.
- ↑ Jump up to: 6.0 6.1 Brown, Michael E.. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html. Retrieved 3 December 2018.
- ↑ Jump up to: 7.0 7.1 Thirouin, A.; Ortiz, J. L.; Campo Bagatin, A.; Pravec, P.; Morales, N.; Hainaut, O.; Duffard, R. (August 2012). "Short-term variability of 10 trans-Neptunian objects". Monthly Notices of the Royal Astronomical Society 424 (4): 3156–3177. doi:10.1111/j.1365-2966.2012.21477.x. Bibcode: 2012MNRAS.424.3156T. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MNRAS.424.3156T. Retrieved 2 December 2015.
- ↑ Jump up to: 8.0 8.1 Sheppard, Scott S.; Jewitt, David C. (September 2002). "Time-resolved Photometry of Kuiper Belt Objects: Rotations, Shapes, and Phase Functions". The Astronomical Journal 124 (3): 1757–1775. doi:10.1086/341954. Bibcode: 2002AJ....124.1757S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002AJ....124.1757S. Retrieved 2 December 2015.
- ↑ Belskaya, Irina N.; Barucci, Maria A.; Fulchignoni, Marcello; Dovgopol, Anatolij N. (April 2015). "Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo". Icarus 250: 482–491. doi:10.1016/j.icarus.2014.12.004. Bibcode: 2015Icar..250..482B. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..250..482B. Retrieved 14 December 2016.
- ↑ Peixinho, N.; Delsanti, A.; Guilbert-Lepoutre, A.; Gafeira, R.; Lacerda, P. (October 2012). "The bimodal colors of Centaurs and small Kuiper belt objects". Astronomy and Astrophysics 546: 12. doi:10.1051/0004-6361/201219057. Bibcode: 2012A&A...546A..86P. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..86P. Retrieved 14 December 2016.
- ↑ Jewitt, David; Peixinho, Nuno; Hsieh, Henry H. (November 2007). "U-Band Photometry of Kuiper Belt Objects". The Astronomical Journal 134 (5): 2046–2053. doi:10.1086/522787. Bibcode: 2007AJ....134.2046J. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007AJ....134.2046J. Retrieved 14 December 2016.
- ↑ "LCDB Data for (40314)". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=40314%7C. Retrieved 14 December 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 24 February 2018.
External links
- "TNOs are Cool": A Survey of the Transneptunian Region IV - Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory-PACS
- List of Transneptunian Objects, Minor Planet Center
- Asteroid Lightcurve Database (LCDB), query form (info )
- (40314) 1999 KR16 at AstDyS-2, Asteroids—Dynamic Site
- (40314) 1999 KR16 at the JPL Small-Body Database
Original source: https://en.wikipedia.org/wiki/(40314) 1999 KR16.
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