(145453) 2005 RR₄₃

(145453) 2005 RR₄₃
	Precovery image of 2005 RR43 taken by the Siding Spring Observatory in 1983
Discovery
Discovered by	Andrew C. Becker; Andrew W. Puckett; Jeremy M. Kubica
Discovery site	Apache Point Obs.
Discovery date	9 September 2005
Designations
MPC designation	(145453) 2005 RR43
Minor planet category	cubewano; extended (DES)
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	14301 days (39.15 yr)
Aphelion	49.050 AU (7.3378 Tm)
Perihelion	37.276 AU (5.5764 Tm)
Semi-major axis	43.163 AU (6.4571 Tm)
Eccentricity	0.13639
Orbital period (sidereal)	283.58 yr (103578 d)
Average orbital speed	0.00346°/d
Mean anomaly	43.576°
Mean motion	0° 0m 12.513s / day
Inclination	28.506°
Longitude of ascending node	85.852°
Argument of perihelion	279.66°
Earth MOID	36.394 AU (5.4445 Tm)
Jupiter MOID	32.9176 AU (4.92440 Tm)
Physical characteristics
Dimensions	252 km; 213 km
Synodic rotation period	7.87 h (0.328 d)
Sidereal rotation period	7.87 h
Geometric albedo	0.703±0.021 (wavelength: 1.5 μm); 0.828±0.049 (wavelength: 2.0 μm)
Spectral type	B−V=0.77,; V−R=0.41; B0−V0=0.790
Absolute magnitude (H)	4.1; 4.0; 4.4 (per Brown)

(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

Based on their common pattern of IR water-ice absorptions, neutral visible spectrum,^[7] and the clustering of their orbital elements, the other 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 The + marks 2005 RR₄₃ (B−V=0.77, V−R=0.41) on this color plot of TNOs. All the other Haumea-family members are located to the lower left of this point.

References

^ Lowe, Andrew. "(145453) 2005 RR43 Precovery Images". andrew-lowe.ca.
^ ^a ^b ^c "JPL Small-Body Database Browser: 145453 (2005 RR43)" (2014-01-02 last obs). Retrieved 7 April 2016.
^ "MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2011-01-08.
^ Marc W. Buie. "Orbit Fit and Astrometric record for 145453" (2008-12-06 using 140 observations). SwRI (Space Science Department). Retrieved 2009-10-04.
^ ^a ^b ^c ^d Carry, Benoit; Snodgrass, Colin; Lacerda, Pedro; Hainaut, Olivier; Dumas, Christophe (16 July 2012). "Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations" (PDF). Astronomy & Astrophysics. 544. EDP Sciences: A137. arXiv:1207.6491. Bibcode:2012A&A...544A.137C. doi:10.1051/0004-6361/201219044. S2CID 119256112. Archived from the original (PDF) on 7 November 2014. Retrieved 8 June 2014.
^ ^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.
^ ^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. arXiv:astro-ph/0703098. Bibcode:2007A&A...468L..25P. doi:10.1051/0004-6361:20077294. S2CID 18546361.
^ Snodgrass, Carry; Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family". Astronomy and Astrophysics. 511: A72. arXiv:0912.3171. Bibcode:2010A&A...511A..72S. doi:10.1051/0004-6361/200913031. S2CID 62880843.
^ David L. Rabinowitz; Bradley E. Schaefer; Martha W. Schaefer; Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". The Astronomical Journal. 136 (4): 1502–1509. arXiv:0804.2864. Bibcode:2008AJ....136.1502R. doi:10.1088/0004-6256/136/4/1502. S2CID 117167835.
^ (145453) = 2005 RR43 Orbit
^ Michael E. Brown; Kristina M. Barkume; Darin Ragozzine; Emily L. Schaller (2007). "A collisional family of icy objects in the Kuiper belt" (PDF). Nature. 446 (7133): 294–296. Bibcode:2007Natur.446..294B. doi:10.1038/nature05619. PMID 17361177. S2CID 4430027.

External links

List of TNOs, Minor Planet Center
(145453) 2005 RR43 Precovery Images
(145453) 2005 RR43 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[andrew-lowe-1] Lowe, Andrew. "(145453) 2005 RR43 Precovery Images". andrew-lowe.ca.

[jpldata-2] "JPL Small-Body Database Browser: 145453 (2005 RR43)" (2014-01-02 last obs). Retrieved 7 April 2016.

[MPEC_2009-R09-3] "MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2011-01-08.

[Buie-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.

[Carry2012-5] Carry, Benoit; Snodgrass, Colin; Lacerda, Pedro; Hainaut, Olivier; Dumas, Christophe (16 July 2012). "Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations" (PDF). Astronomy & Astrophysics. 544. EDP Sciences: A137. arXiv:1207.6491. Bibcode:2012A&A...544A.137C. doi:10.1051/0004-6361/201219044. S2CID 119256112. Archived from the original (PDF) on 7 November 2014. Retrieved 8 June 2014.

[Brown-6] 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.

[PinillaAlonso2007-7] 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. arXiv:astro-ph/0703098. Bibcode:2007A&A...468L..25P. doi:10.1051/0004-6361:20077294. S2CID 18546361.

[Snodgrass2009-8] Snodgrass, Carry; Dumas, Hainaut (16 December 2009). "Characterisation of candidate members of (136108) Haumea's family". Astronomy and Astrophysics. 511: A72. arXiv:0912.3171. Bibcode:2010A&A...511A..72S. doi:10.1051/0004-6361/200913031. S2CID 62880843.

[Rabinowitz2008-9] David L. Rabinowitz; Bradley E. Schaefer; Martha W. Schaefer; Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". The Astronomical Journal. 136 (4): 1502–1509. arXiv:0804.2864. Bibcode:2008AJ....136.1502R. doi:10.1088/0004-6256/136/4/1502. S2CID 117167835.

[MPC-145453-10] (145453) = 2005 RR43 Orbit

[BrownBarkume2007-11] Michael E. Brown; Kristina M. Barkume; Darin Ragozzine; Emily L. Schaller (2007). "A collisional family of icy objects in the Kuiper belt" (PDF). Nature. 446 (7133): 294–296. Bibcode:2007Natur.446..294B. doi:10.1038/nature05619. PMID 17361177. S2CID 4430027.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

v t Trans-Neptunian objects
TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects Neptune trojans Plutinos Twotinos TNO moons
Dwarf planets (moons)	Orcus Vanth Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hiʻiaka Ring Quaoar Weywot Rings Makemake MK2 Gonggong Xiangliu Eris Dysnomia Sedna
Sednoids	90377 Sedna 2012 VP113 541132 Leleākūhonua

(145453) 2005 RR₄₃

Origin

Surface

See also

References

External links

See what we do next...

OR