|
Discovery
|
|
|---|---|
| Discovered by | M. E. Brown, C. Trujillo, D. Rabinowitz[1] |
| Discovery date | July 26, 2003 |
|
Designations
|
|
| MPC designation | (120178) 2003 OP32 |
| Alternate name | none |
| Minor planet category |
Cubewano (MPC)[2] Extended (DES)[3] |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 7175.166 Gm (47.963 AU) |
| Perihelion | 5774.750 Gm (38.602 AU) |
| Semi-major axis | 6474.958 Gm (43.282 AU) |
| Eccentricity | 0.108 |
| Orbital period | 104007.766 d (284.76 a) |
| Average orbital speed | 4.51 km/s |
| Mean anomaly | 57.925° |
| Inclination | 27.189° |
| Longitude of ascending node | 182.940° |
| Argument of perihelion | 69.449° |
|
Physical characteristics
|
|
| Dimensions | 230 km[5][6] |
| Mean density | 2.0? g/cm³ |
| Sidereal rotation period |
8.45 hr[7] |
| Albedo | 0.7 (assumed) |
| Temperature | ~42 K |
| Spectral type | (Neutral) B-V=0.70, V-R=0.39[8] B0-V0=0.698[7] |
| Absolute magnitude (H) | 4.2[4] |
(120178) 2003 OP32, also written as (120178) 2003 OP32,is a trans-Neptunian object (TNO) that resides in the Kuiper belt. It was discovered on July 26, 2003 by Michael E. Brown, Chad Trujillo, and David L. Rabinowitz at Palomar Mountain in California.
Origin
Main article: Haumea family
Based on their common pattern of IR water-ice absorption and a the clustering of their orbital elements [9], the KBOs (120178) 2003 OP32, 1995 SM55, (19308) 1996 TO66, (55636) 2002 TX300, and (145453) 2005 RR43 among others, appear to be collisional fragments broken off the dwarf planet Haumea. The neutral color of the spectrum of these objects in the visible range, evidences a lack of complex organics on the surface of these bodies that has been studied in detail for the surface of Haumea. [10]
References
- ^ List Of Transneptunian Objects
- ^ "MPEC 2009-R09 : DISTANT MINOR PLANETS (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 2009-09-04. http://www.cfa.harvard.edu/mpec/K09/K09R09.html. Retrieved 2009-10-04.
- ^ Marc W. Buie (2005-09-03 using 41 of 42 observations). "Orbit Fit and Astrometric record for 120178". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/120178.html. Retrieved 2009-10-04.
- ^ a b "JPL Small-Body Database Browser: 120178 (2003 OP32)". 2009-07-19 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=120178. Retrieved 2009-08-28.
- ^ Assuming a Haumea-like albedo of 0.7
- ^ Dan Bruton. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics & Astronomy (Stephen F. Austin State University). http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html. Retrieved 2009-12-27.
- ^ a b David L. Rabinowitz, Bradley E. Schaefer, Martha W. Schaefer, Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". ArXiv.org. http://arxiv.org/abs/0804.2864. Retrieved 2008-09-20.
- ^ Snodgrass, Carry, Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family" (abstract). The Astrophysical Journal. arΧiv:0912.3171.
- ^ Pinilla-Alonso, N.; Licandro, J.; Gil-Hutton, R.; Brunetto, R. (June 2007). "The water ice rich surface of (145453) 2005 RR43: a case for a carbon-depleted population of TNOs?" (PDF). Astronomy and Astrophysics 468 (1): L25. doi:. http://adsabs.harvard.edu/abs/2007A%26A...468L..25P. Pinilla-Alonso et al. 2007
- ^ N. Pinilla-Alonso, R. Brunetto, J. Licandro, R. Gil-Hutton, T. L. Roush, and G. Strazzulla (March 2009). "Study of the Surface of 2003 EL61, the largest carbon-depleted object in the trans-neptunian belt" (PDF). Astronomy and Astrophysics 496 (2): 547. doi:. http://adsabs.harvard.edu/abs/2009A%26A...496..547P.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- (120178) 2003 OP32 Precovery Images
|
||||||||||||||||
|
|||||
|
|||||||||||||||||||||||||||||
 |
This article about a centaur or trans-Neptunian object is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
