(145453) 2005 RR43

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(145453) 2005 RR43
Sidereal rotation period
7.87 h[5]
0.703±0.021 (wavelength: 1.5 μm)
0.828±0.049 (wavelength: 2.0 μm)[7]
B−V=0.77,
V−R=0.41[8]
B0−V0=0.790[9]
4.1[2][10]
4.0[5][7]
4.4 (per Brown)[6]

(145453) 2005 RR43 (

provisional designation 2005 RR43) is a trans-Neptunian object (TNO) estimated to be about 250 km in diameter.[5][6] It was discovered on 9 September 2005 by Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot
, New Mexico.

Origin

Main article: Haumea family

Based on their common pattern of

KBOs 1995 SM55, (19308) 1996 TO66, (55636) 2002 TX300 and (120178) 2003 OP32 appear to be collisional fragments broken off the dwarf planet Haumea
.

Surface

The surface is covered by water ice as attested by deep absorption at 1.5 and 2 μm in the infrared spectrum and neutral (i.e. non-red) colour. Scattering models reveal that the observed water ice is, at least in a significant fraction, crystalline and organics, detected on the surface of many TNOs, are completely absent.[7] These physical and orbital characteristics common with Haumea led to suggestion that 2005 RR43 is a member of the Haumea collisional family. The object, together with other members of the family ((19308) 1996 TO66, (24835) 1995 SM55, (55636) 2002 TX300 and (120178) 2003 OP32), would be created from ice mantle ejected from the proto-Haumea as result of a collision with another large (around 1,660 kilometres (1,030 mi)) body.[11]

Neutral (non-red) color index
Haumea-family members
are located to the lower left of this point.

See also

References

  1. ^ Lowe, Andrew. "(145453) 2005 RR43 Precovery Images". andrew-lowe.ca.
  2. ^ a b c "JPL Small-Body Database Browser: 145453 (2005 RR43)" (2014-01-02 last obs). Retrieved 7 April 2016.
  3. IAU Minor Planet Center
    . 2009-09-04. Retrieved 2011-01-08.
  4. Marc W. Buie. "Orbit Fit and Astrometric record for 145453"
    (2008-12-06 using 140 observations). SwRI (Space Science Department). Retrieved 2009-10-04.
  5. ^
    S2CID 119256112. Archived from the original
    (PDF) on 7 November 2014. Retrieved 8 June 2014.
  6. ^ a b c Michael E. Brown. "How many dwarf planets are there in the outer solar system?". Archived from the original on 2011-10-18. Retrieved 2014-11-07.
  7. ^ a b c d Pinilla-Alonso, N.; Licandro, J.; Gil-Hutton, R.; Brunetto, R. (June 2007). "The water ice rich surface of (145453) 2005 RR43: a case for a carbon-depleted population of TNOs?" (PDF). Astronomy and Astrophysics. 468 (1): L25.
    S2CID 18546361
    .
  8. S2CID 62880843
    .
  9. S2CID 117167835
    .
  10. ^ (145453) = 2005 RR43 Orbit
  11. S2CID 4430027
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=(145453)_2005_RR43&oldid=1196905200"