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(202421) 2005 Uq513

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Title: (202421) 2005 Uq513  
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Subject: List of classical Kuiper belt objects, List of minor planets: 202001–203000
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(202421) 2005 Uq513

(202421) 2005 UQ513
Discovered by M. E. Brown
D. L. Rabinowitz
C. A. Trujillo
Discovery date October 21, 2005[1]
MPC designation (202421) 2005 UQ513
Minor planet category Cubewano (MPC)[3]
ScatExt (DES)[4]
Orbital characteristics[1][5]
Epoch March 14, 2012 (JD 2456000.5)
Aphelion 49.769 AU (Q)
Perihelion 37.321 AU (q)
Semi-major axis 43.545 AU (a)
Eccentricity 0.14293
Orbital period 287.35 yr (104,955 d)
Mean anomaly 221.02° (M)
Inclination 25.7201°
Longitude of ascending node 307.7905°
Argument of perihelion 220.01°
Physical characteristics
Dimensions 919 km[6]
878 km[7]
748 km[8]
Apparent magnitude 20.8[9]
Absolute magnitude (H) 3.4[1]

(202421) 2005 UQ513, also written as 2005 UQ513, is a cubewano with an absolute magnitude of 3.4.[1] Mike Brown's website lists it as a highly likely dwarf planet.[8] 2005 UQ513 shows signs of weak water ice.[10] Like Quaoar,[11] it has a very[11] red spectrum,[12][13] which indicates that its surface probably contains a lot of complex, processed organic molecules.[12] Its light curve shows variations of Δm=0.3 mag, but no period has been determined.[13]


2005 UQ513 has a perihelion of 37.3 AU.[1] The Minor Planet Center (MPC) classifies it as a cubewano[3] while the Deep Ecliptic Survey (DES) classifies it as ScatExt (scattered-extended).[4] Although dynamically it would have been a good candidate to be a member of the Haumea collisional family, given its red spectrum it is not.[12][13]


It is currently 48.6 AU from the Sun.[9] It will come to perihelion around 2123.[1]

It has been observed 59 times over 12 oppositions with precovery images back to 1990.[1]


External links

  • Horizons Ephemeris
  • (202421) 2005 UQ513 Precovery Images
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