Astronomy:(308193) 2005 CB79

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(308193) 2005 CB79
Haumea family orbits.png
(308193) 2005 CB79 among other Haumea family objects
Discovery[1]
Discovered byM. E. Brown,
C. A. Trujillo,
D. L. Rabinowitz
Discovery date6 February 2005
Designations
2005 CB79
Minor planet categoryCubewano (MPC)[2]
Extended (DES)[3]
Orbital characteristics[5]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc5083 days (13.92 yr)
|{{{apsis}}}|helion}}50.062 astronomical unit|AU (7.4892 Tm) (Q)
|{{{apsis}}}|helion}}37.231 AU (5.5697 Tm) (q)
43.647 AU (6.5295 Tm) (a)
Eccentricity0.14698 (e)
Orbital period288.36 yr (105324 d)
Mean anomaly319.66° (M)
Mean motion0° 0m 12.305s / day (n)
Inclination28.606° (i)
Longitude of ascending node112.79° (Ω)
|{{{apsis}}}|helion}}≈ 5 December 2048[4]
±3 days
90.154° (ω)
Physical characteristics
Dimensions158 km[6][7]
Rotation period6.76 h (0.282 d)
Sidereal rotation period13.52 h[8]
Geometric albedo0.7 (assumed)
(Neutral)
B-V=0.73, V-R=0.37[9]
Apparent magnitude21.1[10]
Absolute magnitude (H)4.6[5]


(308193) 2005 CB79 is a trans-Neptunian object that is a member of the Haumea family.[9]

Haumea family

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,[5] and a Haumea-family albedo of 0.7, this object would have a diameter of 158 km.[7]

Observations by Mike Brown in 2012 using the W. M. Keck Observatory suggest that (308193) 2005 CB79 does not have a companion.[11]

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

References

  1. ↑ Marsden, Brian G. (September 1, 2007). "MPEC 2007-R02 : 2003 UY413, 2003 UZ413, 2004 NT33, 2005 CA79, 2005 CB79, 2005 UQ513". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. http://www.cfa.harvard.edu/mpec/K07/K07R02.html. 
  2. ↑ "MPEC 2010-A05 :Distant Minor Planets (14 January 2010.0 TT)". IAU Minor Planet Center. January 2, 2010. http://www.cfa.harvard.edu/mpec/K10/K10A05.html. 
  3. ↑ Marc W. Buie (December 20, 2008). "Orbit Fit and Astrometric record for 308193". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/308193.html. 
  4. ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  5. ↑ 5.0 5.1 5.2 "JPL Small-Body Database Browser: (2005 CB79)". December 20, 2008. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005CB79. 
  6. ↑ Assuming a Haumea-like albedo of 0.7
  7. ↑ 7.0 7.1 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. 
  8. ↑ Carry, Benoit; Snodgrass, Colin; Lacerda, Pedro; Hainaut, Olivier; Dumas, Christophe (16 July 2012). "Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations". Astronomy & Astrophysics (EDP Sciences) 544: A137. doi:10.1051/0004-6361/201219044. Bibcode: 2012A&A...544A.137C. http://benoit.carry.free.fr/science/article/2012-AA-544-Carry.pdf. Retrieved 8 June 2014. 
  9. ↑ 9.0 9.1 Snodgrass, Carry; Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family". Astronomy and Astrophysics 511: A72. doi:10.1051/0004-6361/200913031. Bibcode: 2010A&A...511A..72S. 
  10. ↑ "AstDys 2005CB79 Ephemerides". Department of Mathematics, University of Pisa, Italy. https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=2005CB79. 
  11. ↑ Plutokiller (February 3, 2012). "2005 CB79 looks solitary.". Twitter. https://twitter.com/plutokiller/status/165421815693451265. 

External links



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