(15760) 1992 QB1

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(15760) 1992 QB1
AnimatedOrbitOf157601992QB1.gif
Orbit of (15760) 1992 QB1, planets (red) and the Sun (black). The outermost planet visible is Neptune.
Discovery[1]
Discovered by David C. Jewitt,
Jane X. Luu
Discovery date August 30, 1992
Designations
Trans-Neptunian object
(cubewano)[2]
Orbital characteristics
Epoch December 9, 2014 (JD 2457000.5)[3]
Aphelion 46.8752 AU
Perihelion 40.9208 AU
43.8980 AU
Eccentricity 0.0678
290.85 a
4.4961 km/s
24.1405°
Inclination 2.1907°
359.4942°
4.2972°
Physical characteristics
Dimensions

167 km[4]

108 km[5]
Albedo 0.2 (expected from theory)[5]
~23.4[6]
7.1[3]

(15760) 1992 QB1, also written (15760) 1992 QB1, was the first trans-Neptunian object to be discovered after Pluto and Charon. It was discovered in 1992 by David C. Jewitt and Jane X. Luu at the Mauna Kea Observatory, Hawaii. It is a classical Kuiper belt object and gave rise to the name cubewano for this kind of object, after the "QB1" portion of its designation.[7] Decoding its provisional designation, "QB1" reveals that it was the 27th object found in the second half of August of that year.[1] Over 1,500 further objects have been found beyond Neptune, a good number of which are classical Kuiper belt objects.

The discoverers suggested the name "Smiley" for (15760) 1992 QB1,[8] but the name was already used for an asteroid 1613 Smiley, named after the American astronomer Charles Hugh Smiley. It has received the number 15760[2] and remains unnamed; it is normally referred to simply as "QB1", even though this is technically ambiguous without the year of discovery.

Notes[edit]

^ asteroid provisional designations follow a format, in which the year it was discovered comes first, followed by the half-month it was discovered alphabetically (e.g. A=January 1–15, B=January 16–31 and so on,) and then the order of its discovery alphabetically (skipping the letter I) followed by a number (e.g. 1992 QA, 1992 QB, 1992 QC ... 1992 QY, 1992 QZ, 1992 QA1, 1992 QB1 and so on.) According to this, Q=August 16–31 and B1=25+2=27.

References[edit]

  1. ^ "IAUC 5611: 1992 QB1". IAU Minor Planet Center. 14 September 1992. Retrieved 2011-07-05. 
  2. ^ a b Marc W. Buie (30 November 1999). "Orbit Fit and Astrometric record for 15760". SwRI, Space Science Department. Retrieved 2008-09-28. 
  3. ^ a b "JPL Small-Body Database Browser". Jet Propulsion Laboratory. Retrieved 2015-01-03. 
  4. ^ William Robert Johnston (28 December 2015). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2015-01-03. 
  5. ^ a b Mike Brown, 'How many dwarf planets are there in the outer solar system? Accessed 2014-11-19
  6. ^ "AstDys (15760) 1992QB1 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-03-03. 
  7. ^ Dr. David Jewitt. "Classical Kuiper Belt Objects". David Jewitt/UCLA. Archived from the original on 2013-07-05. Retrieved July 1, 2013. 
  8. ^ What Lurks in the Outer Solar System? (Science@NASA, 13 September 2001)

External links[edit]