(308193) 2005 CB79

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(308193) 2005 CB79
Discovery[1]
Discovered by M. E. Brown,
C. A. Trujillo,
D. L. Rabinowitz
Designations
MPC designation 2005 CB79
Minor planet category Cubewano (MPC)[2]
Extended (DES)[3]
Orbital characteristics[4]
Epoch January 10, 2010 (2455200.5)
Aphelion 49.178 AU (Q)
Perihelion 37.133 AU (q)
Semi-major axis 43.155 AU (a)
Eccentricity 0.1395
Orbital period 283.51 yr
Mean anomaly 309.19° (M)
Inclination 28.675°
Longitude of ascending node 112.86°
Argument of perihelion 92.738°
Physical characteristics
Dimensions 158 km[5][6]
Albedo 0.7 (assumed)
Spectral type (Neutral)
B-V=0.73, V-R=0.37[7]
Apparent magnitude 21.1[8]
Absolute magnitude (H) 4.7[4]

(308193) 2005 CB79 is a trans-Neptunian object that is a member of the Haumea family.[7]

As a member of the Haumea family, (308193) 2005 CB79 is suspected of being an icy mantle collisional fragment from dwarf planet Haumea. With an absolute magnitude (H) of 4.7,[4] and a Haumea-family albedo of 0.7, this object would have a diameter of 158 km.[6]

The + marks 2005 RR43 (B-V=0.77, V-R=0.41) on this color plot of TNOs. All the other Haumea-family members (CB79: 0.73, 0.37) are located to the lower left of this point.

Observations by Mike Brown in 2012 using the W. M. Keck Observatory suggest that (308193) 2005 CB79 does not have a companion.[9]

References[edit]

  1. ^ Marsden, Brian G. (2007-09-01). "MPEC 2007-R02 : 2003 UY413, 2003 UZ413, 2004 NT33, 2005 CA79, 2005 CB79, 2005 UQ513". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 2010-01-10. 
  2. ^ "MPEC 2010-A05 :Distant Minor Planets (14 January 2010.0 TT)". IAU Minor Planet Center. 2010-01-02. Archived from the original on 14 January 2010. Retrieved 2010-01-10. 
  3. ^ Marc W. Buie (2008-12-20 using 24 of 24 observations). "Orbit Fit and Astrometric record for 05CB79". SwRI (Space Science Department). Retrieved 2010-01-10. 
  4. ^ a b c "JPL Small-Body Database Browser: (2005 CB79)". 2008-12-20 last obs. Retrieved 2010-01-10. 
  5. ^ Assuming a Haumea-like albedo of 0.7
  6. ^ a b Dan Bruton. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics & Astronomy (Stephen F. Austin State University). Retrieved 2009-12-27. 
  7. ^ a b Snodgrass, Carry, Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family". The Astrophysical Journal. arXiv:0912.3171. Bibcode:2010A&A...511A..72S. doi:10.1051/0004-6361/200913031. 
  8. ^ "AstDys 2005CB79 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-01-10. 
  9. ^ Plutokiller (2012-02-03). "2005 CB79 looks solitary.". Twitter. Retrieved 2012-02-03. 

External links[edit]