2006 QH181

2006 QH181
Discovery
Discovery date August 21, 2006
Designations
MPC designation 2006 QH181
TNO[1][2]
Scattered disc[3]
Orbital characteristics[4]
Epoch 13 January 2016 (JD 2457400.5)[4]
Uncertainty parameter 6
Observation arc 2634 days (7.21 yr)
Aphelion 96.680 AU (14.4631 Tm) (Q)
Perihelion 37.789 AU (5.6532 Tm) (q)
67.235 AU (10.0582 Tm) (a)
Eccentricity 0.43795 (e)
551.31 yr (201366 d)
102.28° (M)
0° 0m 6.436s /day (n)
Inclination 19.144° (i)
73.840° (Ω)
211.02° (ω)
Earth MOID 36.7863 AU (5.50315 Tm)
Jupiter MOID 32.6588 AU (4.88569 Tm)
Physical characteristics
Dimensions 460–1030 km[4][5]
765 km (assumed)[6]
23.6[7]
4.3[4]

    2006 QH181, also written as 2006 QH181, is a trans-Neptunian object (TNO). It is very likely a dwarf planet,[8] and is part of the scattered disc.[2][3] Its orbit is currently too poorly determined (U=6)[4] to know whether there is a resonance with Neptune.

    Distance

    It came to perihelion around 1858.[4] It is currently 82.9 AU from the Sun[7][9] and moving at 2.8 kilometers per second (6,300 miles per hour) with respect to the Sun.[9] The only dwarf planets and likely dwarf planets currently farther from the Sun are V774104, Eris (96.4 AU),[10] 2007 OR10 (87.0 AU),[11] Sedna (86.3 AU),[12] and 2012 VP113 (83.1 AU). Because it is so far from the Sun, it only has an apparent magnitude of 23.6.[7]

    Most-distant known objects in the
    Solar System as of 10 October 2016[13]
    Object name Distance from the Sun (AU) Apparent
    magnitude    		 Absolute
    magnitude     (H)
    Current Perihelion Aphelion
    V774104 103 N/A N/A 24 4
    Eris 96.2 37.8 97.6 18.7 -1.2
    2014 UZ224 91.6 38.0 179.8 23.2 3.5
    2007 OR10 87.6 33.0 100.8 21.7 2.5
    2013 FS28 86.2 34.6 347.6 24.5 4.9
    Sedna 85.6 76.0 939 21.0 1.6
    2014 FC69 84.4 40.3 106.9 24.1 4.6
    2006 QH181 83.6 37.8 96.7 23.6 4.3
    2012 VP113 83.3 80.5 438 23.4 4.0
    2013 FY27 80.2 36.1 81.8 22.1 3.0
    2014 FJ72 71.1 38.7 152.2 24.2 5.6
    2010 GB174 71.1 48.7 693 25.1 6.5
    2012 FH84 68.6 45.8 80.6 25.7 7.3
    2011 GM89 68.3 37.2 68.8 25.6 7.1
    2015 GR50 68.2 35.6 78.6 25.1 6.7
    2015 GP50 68.1 35.9 89.1 24.8 6.5
    2013 FQ28 67.5 48.7 80.6 24.4 6.0
    2013 UJ15 64.4 36.3 69.2 25.2 7.0
    2015 RR245 63.9 33.7 129.2 22.1 3.9
    2014 SG350 63.0 39.9 63.9 24.8 6.8
    2014 FL72 62.1 38.2 170.4 25.0 6.8
    2013 AT183 62.1 36.0 88.1 22.0 4.7
    2014 FE72 61.8 36.3 4274.0 24.1 6.1
    2014 SV349 61.3 34.2 89.0 23.0 5.0
    2000 CR105 60.8 44.3 412 23.9 6.3
    2014 SU349 60.7 30.8 109.8 25.0 7.0
    2014 FF72 60.7 37.1 63.3 24.8 6.9
    2014 FM72 60.4 34.4 76.6 24.1 6.2
    2014 FH72 60.1 37.3 77.3 25.1 7.2
    2008 ST291 60.1 42.4 154.5 22.2 4.2
    2003 QX113 60.0 36.7 62.1 22.5 4.7
    2015 KH162 59.2 41.5 82.8 21.6 3.9
    Including all known objects currently located at least twice as far as Neptune.[13]
    See List of trans-Neptunian objects for more.

    Orbit

    It has been observed 15 times over only three oppositions and thus currently has a somewhat poorly known orbit. JPL ranks orbital quality from 0 to 9 (0 being best), and 2006 QH181 is currently listed with an orbit quality of 6.[4][14]

    See also

    References

    1. ↑ "MPEC 2008-O05 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2008-07-17. Retrieved 2008-07-29.
    2. 1 2 "List Of Centaurs and Scattered-Disk Objects". MPC. Retrieved 2007-03-03.
    3. 1 2 Marc W. Buie (2008-03-05). "Orbit Fit and Astrometric record for 06QH181". SwRI (Space Science Department). Retrieved 2014-02-28.
    4. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: (2006 QH181)" (last observation: 2013-11-06; arc: 7.21 years). Retrieved 30 March 2016.
    5. ↑ "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 1 September 2008. Retrieved 2008-07-29.
    6. ↑ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 18 February 2007. Retrieved 2007-03-03.
    7. 1 2 3 "AstDyS 2006QH181 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2014-04-06.
    8. ↑ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 18 September 2016.
    9. 1 2 "Horizon Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory. Retrieved 2009-01-22.
    10. ↑ "AstDyS (136199) Eris Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31.
    11. ↑ "AstDyS 2007OR10 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31.
    12. ↑ "AstDyS (90377) Sedna Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2012-01-31.
    13. 1 2 "AstDyS-2, Asteroids - Dynamic Site". 2016-02-26. Retrieved 2016-02-29. Objects with distance from Sun over 59 AU
    14. ↑ "2006 QH181". Minor Planet Center, IAU. Retrieved 2014-02-05.

    External links

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