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

(308193) 2005 CB79
(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
MPC designation
2005 CB79
Minor planet category
Cubewano (MPC)[2]
Extended (DES)[3]
Orbital characteristics[4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc5083 days (13.92 yr)
Aphelion50.062 AU (7.4892 Tm) (Q)
Perihelion37.231 AU (5.5697 Tm) (q)
Semi-major axis
43.647 AU (6.5295 Tm) (a)
Eccentricity0.14698 (e)
Orbital period (sidereal)
288.36 yr (105324 d)
Mean anomaly
319.66° (M)
Mean motion
0° 0m 12.305s / day (n)
Inclination28.606° (i)
Longitude of ascending node
112.79° (Ω)
Time of perihelion
≈ 5 December 2048[5]
±3 days
Argument of perihelion
90.154° (ω)
Physical characteristics
Dimensions158 km[6][7]
Synodic rotation period
6.76 h (0.282 d)
Sidereal rotation period
13.52 h[8]
Geometric albedo
0.7 (assumed)
Spectral type
(Neutral)
B-V=0.73, V-R=0.37[9]
Apparent magnitude
21.1[10]
Absolute magnitude (H)
4.6[4]

    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,[4] 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.
    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. Retrieved January 10, 2010.
    2. "MPEC 2010-A05 :Distant Minor Planets (14 January 2010.0 TT)". IAU Minor Planet Center. January 2, 2010. Archived from the original on 14 January 2010. Retrieved January 10, 2010.
    3. Marc W. Buie (December 20, 2008). "Orbit Fit and Astrometric record for 308193". SwRI (Space Science Department). Archived from the original on August 18, 2010. Retrieved January 10, 2010.
    4. "JPL Small-Body Database Browser: (2005 CB79)". December 20, 2008. Retrieved 7 April 2016.
    5. JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
    6. Assuming a Haumea-like albedo of 0.7
    7. 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 March 23, 2010. Retrieved December 27, 2009.
    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" (PDF). Astronomy & Astrophysics. EDP Sciences. 544: A137. arXiv:1207.6491. Bibcode:2012A&A...544A.137C. doi:10.1051/0004-6361/201219044. S2CID 119256112. Archived from the original (PDF) on 7 November 2014. Retrieved 8 June 2014.
    9. Snodgrass, Carry; Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family". Astronomy and Astrophysics. 511: A72. arXiv:0912.3171. Bibcode:2010A&A...511A..72S. doi:10.1051/0004-6361/200913031. S2CID 62880843.
    10. "AstDys 2005CB79 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved January 10, 2010.
    11. Plutokiller (February 3, 2012). "2005 CB79 looks solitary". Twitter. Retrieved February 3, 2012.



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    (308193) 2005 CB79 — транснептуновый объект, входит в семейство Хаумеа[6].


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