31824 Elatus information

31824 Elatus
	Hubble Space Telescope image of Elatus taken in 2009
Discovery
Discovered by	Catalina Sky Srvy.
Discovery site	Mount Lemmon Obs.
Discovery date	29 October 1999
Designations
MPC designation	(31824) Elatus
Pronunciation	/ˈɛlətəs/
Named after	Elatus (Greek mythology)
Alternative designations	1999 UG5
Minor planet category	centaur · distant
Symbol	or (astrological)
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 2
Observation arc	10.58 yr (3,864 days)
Aphelion	16.298 AU
Perihelion	7.3239 AU
Semi-major axis	11.811 AU
Eccentricity	0.3799
Orbital period (sidereal)	40.59 yr (14,826 days)
Mean anomaly	170.74°
Mean motion	0° 1m 27.48s / day
Inclination	5.2447°
Longitude of ascending node	87.158°
Argument of perihelion	281.62°
Physical characteristics
Mean diameter	45.87 km (derived); 49.8±10.4 km; 57.000±15.900 km
Synodic rotation period	26.5 h; 26.82 h
Geometric albedo	0.049±0.028; 0.050±0.028; 0.057 (assumed)
Spectral type	RR ; B–V = 1.020±0.060; V–R = 0.620±0.048
Absolute magnitude (H)	10.1 · 10.32 · 10.40±0.09 · 10.42 · 10.439±0.107 (R) · 10.49 · 10.61

31824 Elatus (/ˈɛlətəs/; provisional designation 1999 UG₅) is a very red centaur from the outer Solar System, approximately 48 kilometers (30 miles) in diameter. It was discovered on 29 October 1999, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States.^[5] The minor planet was named after Elatus, a centaur from Greek mythology.^[3]

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^ Noah Webster (1884) A Practical Dictionary of the English Language
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^ ^a ^b ^c Cite error: The named reference Duffard-2014 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Bauer-2013 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Gutierrez-2001 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Bauer-2002 was invoked but never defined (see the help page).
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^ ^a ^b Cite error: The named reference Hainaut-2012 was invoked but never defined (see the help page).
^ Cite error: The named reference Peixinho-2012 was invoked but never defined (see the help page).
^ Cite error: The named reference Romanishin-2005 was invoked but never defined (see the help page).
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[jpldata-1] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[2] Noah Webster (1884) A Practical Dictionary of the English Language

[springer-3] Cite error: The named reference springer was invoked but never defined (see the help page).

[lcdb-4] Cite error: The named reference lcdb was invoked but never defined (see the help page).

[MPC-object-5] Cite error: The named reference MPC-object was invoked but never defined (see the help page).

[Duffard-2014-6] Cite error: The named reference Duffard-2014 was invoked but never defined (see the help page).

[Bauer-2013-7] Cite error: The named reference Bauer-2013 was invoked but never defined (see the help page).

[Gutierrez-2001-8] Cite error: The named reference Gutierrez-2001 was invoked but never defined (see the help page).

[Bauer-2002-9] Cite error: The named reference Bauer-2002 was invoked but never defined (see the help page).

[Lowry-2007b-10] Cite error: The named reference Lowry-2007b was invoked but never defined (see the help page).

[Hainaut-2012-11] Cite error: The named reference Hainaut-2012 was invoked but never defined (see the help page).

[Peixinho-2012-12] Cite error: The named reference Peixinho-2012 was invoked but never defined (see the help page).

[Romanishin-2005-13] Cite error: The named reference Romanishin-2005 was invoked but never defined (see the help page).

[Peixinho-2001-14] Cite error: The named reference Peixinho-2001 was invoked but never defined (see the help page).

Discovery^[1]
Hubble Space Telescope image of Elatus taken in 2009
Discovered by	Catalina Sky Srvy.
Discovery site	Mount Lemmon Obs.
Discovery date	29 October 1999
Designations
MPC designation	(31824) Elatus
Pronunciation	/ˈɛlətəs/^[2]
Named after	Elatus ^[3] (Greek mythology)
Alternative designations	1999 UG₅
Minor planet category	centaur ^[1]^[4] · distant ^[5]
Symbol	or (astrological)
Orbital characteristics^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 2
Observation arc	10.58 yr (3,864 days)
Aphelion	16.298 AU
Perihelion	7.3239 AU
Semi-major axis	11.811 AU
Eccentricity	0.3799
Orbital period (sidereal)	40.59 yr (14,826 days)
Mean anomaly	170.74°
Mean motion	0° 1^m 27.48^s / day
Inclination	5.2447°
Longitude of ascending node	87.158°
Argument of perihelion	281.62°
Physical characteristics
Mean diameter	45.87 km (derived)^[4] 49.8±10.4 km^[6] 57.000±15.900 km^[7]
Synodic rotation period	26.5 h^[8] 26.82 h^[9]
Geometric albedo	0.049±0.028^[6] 0.050±0.028^[7] 0.057 (assumed)^[4]
Spectral type	RR ^[10] B–V = 1.020±0.060^[11] V–R = 0.620±0.048^[11]
Absolute magnitude (H)	10.1^[1] · 10.32^[9] · 10.40±0.09^[6] · 10.42^[8]^[4] · 10.439±0.107 (R)^[12] · 10.49^[13] · 10.61^[14]