(126154) 2001 YH140

From Wikipedia, the free encyclopedia
Jump to: navigation, search
(126154) 2001 YH140
Discovery
Discovered by Michael E. Brown,
Chadwick A. Trujillo[1]
Discovery date December 18, 2001
Designations
MPC designation (126154) 2001 YH140
Minor planet category TNO (3:5 resonance)[2]
Orbital characteristics[1][3]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 48.39 AU
Perihelion 36.368 AU
Semi-major axis 42.204 AU)
Eccentricity 0.138
Orbital period 274.60 a (100,297.827 d)
Mean anomaly 13.5°
Inclination 11.1°
Longitude of ascending node 108.9°
Argument of perihelion 354.4°
Physical characteristics
Dimensions 345 ± 45 km[4]
Mass ~4.0×1019 kg
Sidereal rotation period 13.25 ± 0.2 h[5]
Albedo 0.06–0.10[4]
Temperature ~42 K
Absolute magnitude (H) 5.8[4]

(126154) 2001 YH140, also written as (126154) 2001 YH140, is a resonant trans-Neptunian object discovered on December 18, 2001 by C. A. Trujillo, M. E. Brown.

Orbit and rotation[edit]

(126154) 2001 YH140 is locked in 3:5 mean motion resonance with Neptune.[4] When it makes three revolutions around the Sun, Neptune makes exactly five. The rotation period of 2001 YH140 is estimated to be 13.25 ± 0.2 hours.[5]

Physical characteristics[edit]

In 2010 thermal flux from 2001 YH140 in the far-infrared was measured by the Herschel Space Telescope. As a result its size has been estimated to be 300–390 km.[4]

References[edit]

  1. ^ a b "List Of Transneptunian Objects". IAU Minor Planet Center. Retrieved 2011-01-08. 
  2. ^ "MPEC 2009-R09 :Distant Minor Planets (16 September 2009.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2009-10-04. 
  3. ^ "JPL Small-Body Database Browser: (126154) 2001 YH140". 2009-02-02 last obs. Retrieved 2010-08-03. 
  4. ^ a b c d e Muller, T.G.; Lellouch, E.; Stansberry, J. et al. (2010). ""TNOs are Cool": A survey of the trans-Neptunian region I. Results from the Herschel science demonstration phase (SDP)". Astronomy and Astrophysics 518: L146. arXiv:1005.2923. Bibcode:2010A&A...518L.146M. doi:10.1051/0004-6361/201014683. 
  5. ^ a b Sheppard, Scott S. (2007). "Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes". The Astronomical Journal 134 (2): 787–798. arXiv:0704.1636. Bibcode:2007AJ....134..787S. doi:10.1086/519072.