en (455502) 2003 UZ413

2003 UZ₄₁₃
	Hubble Space Telescope image of 2003 UZ413 taken in 2008
Discovery
Discovered by	M. E. Brown; D. L. Rabinowitz; C. A. Trujillo
Discovery date	21 October 2003
Designations
MPC designation	2003 UZ413
Minor planet category	TNO · plutino
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 2
Observation arc	63.25 years (23103 days)\
Earliest precovery date	29 July 1954
Aphelion	47.968 AU (7.1759 Tm)
Perihelion	30.241 AU (4.5240 Tm)
Semi-major axis	39.104 AU (5.8499 Tm)
Eccentricity	0.22667
Orbital period (sidereal)	244.54 yr (89317.3 d)
Mean anomaly	113.43°
Mean motion	0° 0m 14.51s / day
Inclination	12.04911°
Longitude of ascending node	135.930°
Argument of perihelion	145.00°
Physical characteristics
Dimensions	650+1; −175 km (upper limit); 472+122; −25 km (lower limit)
Mass	≈3×1020 kg
Mean density	2.29–3.00 > ρ >0.72 g/cm3; 2.64 g/cm3
Sidereal rotation period	4.13±0.05 h; 4.14 h
Geometric albedo	0.075+0.076; −0.006 (lower limit); 0.151+0.025; −0.064 (upper limit)
Spectral type	V–R=0.45±0.04; BB taxon (blue/neutral); V−R=0.46±0.06; R−I=0.37±0.06
Apparent magnitude	21
Absolute magnitude (H)	4.38±0.05; 4.3 (assumed)

(455502) 2003 UZ₄₁₃ (provisional designation 2003 UZ₄₁₃) is a trans-Neptunian object (TNO) with an absolute magnitude of 4.38.^[5] It is in a 2:3 orbital resonance with Neptune, thus it is classified as a plutino.^[3] There are indications it may be dense enough to be a dwarf planet. It was given the minor planet number 455502 on 22 February 2016.^[11]

2003 UZ₄₁₃ has been observed 79 times over 15 oppositions, with precovery images back to 27 July 1954.^[2]

Orbit and rotation

Precovery image of 2003 UZ₄₁₃ taken by the Siding Spring Observatory in 1996.^[11]

2003 UZ₄₁₃ is in a 2:3 resonance with Neptune, which means that when it makes two revolutions around the Sun, Neptune makes exactly three.^[3]

The object rotates very fast. In fact, with a period of about 4.13 hours, it is the fastest rotator known in the Kuiper belt after Haumea.^[6]^[8]

Physical characteristics

The mean diameter of 2003 UZ₄₁₃ is estimated to be 650+1
−175 km, assuming a low albedo.^[5]

Given its rapid rotation, it must have a density higher than 0.72 g/cm³.^[6] Stable Jacobi ellipsoids with an axis ratio of a/b ≥ 1.13±0.03, as implied by its light-curve amplitude of Δm = 0.13±0.03, exist for densities in the range of 2.29−3.00 g/cm³.^[6] The Johnston's Archive settles on 2.64 g/cm³,^[7] the centre of the latter range; for a 600 km equivalent spheroid body, this would equate to a mass of approximately 3.0×10²⁰ kg. The extremely high estimated density (in contrast to any known similarly sized TNO)^[12] would make it virtually certain that this object is a dwarf planet, but confirmation would require additional observation to refine the size and light curve details, preferably with discovery of a satellite to determine its mass.

In visible light, this object is neutral or slightly red in color and has a flat, featureless reflectance spectrum.^[8]

Notes

^ Buie page actually says 3:2 resonance... thus, also "Plutino"
^ very approximate figure, assuming equivalent spherical diameter of ≈600 km and density ≈2.64 g/cc³
^ equivalent to V-I=0.75±0.06, B-V=0.68±0.06 and V-R=0.39±0.05

References

^ Brown, M.; Trujillo, C.; Rabinowitz, D.; Marsden, B. G. (2007-09-01). "2003 UY413, 2003 UZ413, 2004 NT33, 2005 CA79, 2005 CB79, 2005 UQ513". Minor Planet Electronic Circulars. 2007-R02: 02. Bibcode:2007MPEC....R...02B. MPEC 2007-R02.
^ ^a ^b ^c ^d ^e "JPL Small-Body Database Browser: (2003 UZ413)" (last observation: 2017-10-29). Retrieved 19 August 2019.
^ ^a ^b ^c Marsden, B. G. (2008-07-17). "Distant Minor Planets". Minor Planet Electronic Circulars. MPEC 2008-O05. Retrieved 3 December 2010.
^ Marc W. Buie (2015-09-24). "Orbit Fit and Astrometric record for 2003 UZ413". SwRI (Space Science Department). Archived from the original on 2015-09-23. Retrieved 2019-08-19.
^ ^a ^b ^c ^d ^e ^f ^g ^h Farkas-Takács, A.; Kiss, Cs.; Vilenius, E.; Marton, G.; Müller, T. G.; Mommert, M.; et al. (28 February 2020). ""TNOs are Cool": A survey of the trans-Neptunian region". Astronomy & Astrophysics. 638: A23. arXiv:2002.12712. doi:10.1051/0004-6361/201936183. S2CID 216193564.
^ ^a ^b ^c ^d ^e Perna, D.; Dotto, E.; Barucci, M. A.; Rossi, A.; Fornasier, S.; de Bergh, C. (2009). "Rotations and densities of trans-Neptunian objects". Astronomy & Astrophysics. 508 (1): 451–455. Bibcode:2009A&A...508..451P. doi:10.1051/0004-6361/200911970. Retrieved 1 June 2019.
^ ^a ^b ^c William Robert Johnston. "List of known trans-Neptunian objects". Johnston's Archive. Retrieved 2019-08-19.
^ ^a ^b ^c Fornasier, S.; Barucci, M. A.; de Bergh, C.; Alvarez-Candal, A.; Demeo, F.; Merlin, F.; Perna, D.; Guilbert, A.; Delsanti, A.; Dotto, E.; Doressoundiram, A. (2009). "Visible spectroscopy of the new ESO large programme on trans-Neptunian objects and centaurs: Final results" (PDF). Astronomy and Astrophysics. 508 (1): 457–465. arXiv:0910.0450. Bibcode:2009A&A...508..457F. doi:10.1051/0004-6361/200912582.
^ ^a ^b Perna, D.; Barucci, M.A.; Fornasier, S.; et al. (2010). "Colors and taxonomy of centaurs and trans-Neptunian objects". Astronomy and Astrophysics. 510: A53. arXiv:0912.2621. Bibcode:2010A&A...510A..53P. doi:10.1051/0004-6361/200913654.
^ "2003 UZ413 Ephemerides". Asteroids Dynamic Site. Archived from the original on 2019-08-19. Retrieved 2019-08-19.
^ ^a ^b "(455502) 2003 UZ413 Precovery Images". Andrew Lowe's Minor Planet. Retrieved 28 April 2019.
^ Grundy, W.M.; Noll, K.S.; Buie, M.W.; Benecchi, S.D.; Ragozzine, D.; Roe, H.G. (December 2019). "The Mutual Orbit, Mass, and Density of Transneptunian Binary Gǃkúnǁʼhòmdímà ((229762) 2007 UK₁₂₆)". Icarus. 334: 30–38. Bibcode:2019Icar..334...30G. doi:10.1016/j.icarus.2018.12.037. S2CID 126574999. Archived from the original on 2019-04-07. Retrieved 2019-11-06.

External links

2003 UZ413 Precovery Images
(455502) 2003 UZ413 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[5] Buie page actually says 3:2 resonance... thus, also "Plutino"

[7] very approximate figure, assuming equivalent spherical diameter of ≈600 km and density ≈2.64 g/cc³

[12] quivalent to V-I=0.75±0.06, B-V=0.68±0.06 and V-R=0.39±0.05

[MPEC2007-R02-1] Brown, M.; Trujillo, C.; Rabinowitz, D.; Marsden, B. G. (2007-09-01). "2003 UY413, 2003 UZ413, 2004 NT33, 2005 CA79, 2005 CB79, 2005 UQ513". Minor Planet Electronic Circulars. 2007-R02: 02. Bibcode:2007MPEC....R...02B. MPEC 2007-R02.

[jpldata-2] "JPL Small-Body Database Browser: (2003 UZ413)" (last observation: 2017-10-29). Retrieved 19 August 2019.

[K08O05-3] Marsden, B. G. (2008-07-17). "Distant Minor Planets". Minor Planet Electronic Circulars. MPEC 2008-O05. Retrieved 3 December 2010.

[Buie-4] Marc W. Buie (2015-09-24). "Orbit Fit and Astrometric record for 2003 UZ413". SwRI (Space Science Department). Archived from the original on 2015-09-23. Retrieved 2019-08-19.

[TNOsCool15-6] ^ ^a ^b ^c ^d ^e ^f ^g ^h Farkas-Takács, A.; Kiss, Cs.; Vilenius, E.; Marton, G.; Müller, T. G.; Mommert, M.; et al. (28 February 2020). ""TNOs are Cool": A survey of the trans-Neptunian region". Astronomy & Astrophysics. 638: A23. arXiv:2002.12712. doi:10.1051/0004-6361/201936183. S2CID 216193564.

[TNOrot-8] Perna, D.; Dotto, E.; Barucci, M. A.; Rossi, A.; Fornasier, S.; de Bergh, C. (2009). "Rotations and densities of trans-Neptunian objects". Astronomy & Astrophysics. 508 (1): 451–455. Bibcode:2009A&A...508..451P. doi:10.1051/0004-6361/200911970. Retrieved 1 June 2019.

[johnston-9] William Robert Johnston. "List of known trans-Neptunian objects". Johnston's Archive. Retrieved 2019-08-19.

[Fornasier2009-10] Fornasier, S.; Barucci, M. A.; de Bergh, C.; Alvarez-Candal, A.; Demeo, F.; Merlin, F.; Perna, D.; Guilbert, A.; Delsanti, A.; Dotto, E.; Doressoundiram, A. (2009). "Visible spectroscopy of the new ESO large programme on trans-Neptunian objects and centaurs: Final results" (PDF). Astronomy and Astrophysics. 508 (1): 457–465. arXiv:0910.0450. Bibcode:2009A&A...508..457F. doi:10.1051/0004-6361/200912582.

[Perna20010-11] Perna, D.; Barucci, M.A.; Fornasier, S.; et al. (2010). "Colors and taxonomy of centaurs and trans-Neptunian objects". Astronomy and Astrophysics. 510: A53. arXiv:0912.2621. Bibcode:2010A&A...510A..53P. doi:10.1051/0004-6361/200913654.

[AstDyS-Ephems-13] "2003 UZ413 Ephemerides". Asteroids Dynamic Site. Archived from the original on 2019-08-19. Retrieved 2019-08-19.

[andrewlowe-14] "(455502) 2003 UZ413 Precovery Images". Andrew Lowe's Minor Planet. Retrieved 28 April 2019.

[Grundy2019-15] Grundy, W.M.; Noll, K.S.; Buie, M.W.; Benecchi, S.D.; Ragozzine, D.; Roe, H.G. (December 2019). "The Mutual Orbit, Mass, and Density of Transneptunian Binary Gǃkúnǁʼhòmdímà ((229762) 2007 UK₁₂₆)". Icarus. 334: 30–38. Bibcode:2019Icar..334...30G. doi:10.1016/j.icarus.2018.12.037. S2CID 126574999. Archived from the original on 2019-04-07. Retrieved 2019-11-06.

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(455502) 2003 UZ413

Orbit and rotation

Physical characteristics

Notes

References

External links

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