Astronomy:(15789) 1993 SC

(15789) 1993 SC
Discovery
Discovered by	Iwan P. Williams,; Alan Fitzsimmons, and; Donal O'Ceallaigh
Discovery date	17 September 1993
Designations
MPC designation	(15789) 1993 SC
Alternative designations	none
Minor planet category	Plutino
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	5839 days (15.99 yr)
\|{{{apsis}}}\|helion}}	46.639 astronomical unit\|AU (6.9771 Tm)
\|{{{apsis}}}\|helion}}	32.162 AU (4.8114 Tm)
Semi-major axis	39.400 AU (5.8942 Tm)
Eccentricity	0.18372
Orbital period	247.32 yr (90333.4 d)
Mean anomaly	66.186°
Mean motion	0° 0m 14.347s / day
Inclination	5.1667°
Longitude of ascending node	354.75°
\|{{{apsis}}}\|helion}}	316.20°
Earth MOID	31.1475 AU (4.65960 Tm)
Jupiter MOID	27.0752 AU (4.05039 Tm)
TJupiter	5.520
Physical characteristics
Dimensions	328 km; 363 km
Mean radius	164 ± 30 km
Geometric albedo	0.022 ± 0.010
Absolute magnitude (H)	7.0

(15789) 1993 SC is a trans-Neptunian object of the plutino class. The discovery was made in 1993 at the La Palma Observatory with the Isaac Newton Telescope. It was the second plutino to receive an MPC number.^[1]

KBO's found in 1993 include: (15788) 1993 SB, (15789) 1993 SC, (181708) 1993 FW, and (385185) 1993 RO.

References

MPC: List of TNOs
Grundy, W. M.; Noll, K. S.; Stephens, D. C. "Diverse albedos of small trans-neptunian objects." Icarus, Volume 176, Issue 1, p. 184-191 (07/2005) Abstract
(15789) 1993 SC at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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v t e Trans-Neptunian objects
TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects Neptune trojans Plutinos Twotinos TNO moons
Dwarf planets (moons)	Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hiʻiaka Makemake S/2015 (136472) 1 Eris Dysnomia
Sednoids	90377 Sedna 2012 VP113 2015 TG387

Discovery
Discovered by	Iwan P. Williams, Alan Fitzsimmons, and Donal O'Ceallaigh
Discovery date	17 September 1993
Designations
MPC designation	(15789) 1993 SC
Alternative designations	none
Minor planet category	Plutino^[1]
Orbital characteristics^[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	5839 days (15.99 yr)
\|{{{apsis}}}\|helion}}	46.639 astronomical unit\|AU (6.9771 Tm)
\|{{{apsis}}}\|helion}}	32.162 AU (4.8114 Tm)
Semi-major axis	39.400 AU (5.8942 Tm)
Eccentricity	0.18372
Orbital period	247.32 yr (90333.4 d)
Mean anomaly	66.186°
Mean motion	0° 0^m 14.347^s / day
Inclination	5.1667°
Longitude of ascending node	354.75°
\|{{{apsis}}}\|helion}}	316.20°
Earth MOID	31.1475 AU (4.65960 Tm)
Jupiter MOID	27.0752 AU (4.05039 Tm)
T_Jupiter	5.520
Physical characteristics
Dimensions	328 km^[2] 363 km^[3]
Mean radius	164 ± 30 km
Geometric albedo	0.022 ± 0.010^[2]
Absolute magnitude (H)	7.0