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(15789) 1993 SC

Trans-Neptunian object

Field	Value
minorplanet	yes
background	#C2E0FF
name	(15789) 1993 SC
discoverer	Iwan P. Williams,
Alan Fitzsimmons, and
Donal O'Ceallaigh
discovered	17 September 1993
mpc_name	(15789) 1993 SC
alt_names	none
mp_category	Plutino
epoch	13 January 2016 (JD 2457400.5)
semimajor	39.400 AU
perihelion	32.162 AU
aphelion	46.639 AU
eccentricity	0.18372
period	247.32 yr (90333.4 d)
inclination	5.1667°
asc_node	354.75°
arg_peri	316.20°
mean_anomaly	66.186°
satellites	0
mean_diameter
363 km
abs_magnitude	7.0
albedo
mean_motion	/ day
orbit_ref
observation_arc	5839 days (15.99 yr)
uncertainty	3
moid	31.1475 AU
jupiter_moid	27.0752 AU
tisserand	5.520

| Alan Fitzsimmons, and Donal O'Ceallaigh 363 km

(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. The object measures approximately 328 km in diameter. It was the second plutino to receive an MPC number.{{cite web

Other Kuiper belt objects discovered in 1993 include: (15788) 1993 SB, (181708) 1993 FW, (385185) 1993 RO and 1993 RP.

Orbit and classification

1993 SC orbits the Sun at a distance of 32.2–46.1 AU one per 247 Earth years (90,254 days, semi-major axis of 39.4 AU). Its orbit has an eccentricity of 0.183 and an inclination of 5.166° respective to the elliptic. Its observation arc begins with Mauna Kea Observatory in 1993.

1993 SC is a trans-Neptunian object and belongs to the plutinos, an orbital class of objects named after their largest member, Pluto. These resonant trans-Neptunian objects stay in a 2:3 mean-motion orbital resonance with Neptune, orbiting exactly two times the sun for every three orbits Neptune does.

Numbering and naming

1993 SC was numbered by the Minor Planet Center on 26 July 2000, receiving the number in the minor planet catalog. , it has not been named. According to the established naming conventions, it will get a mythological name associated with the underworld.

Physical characteristics

1993 SC has a diameter of 328 km and a low geometric albedo of 0.022. It also has a very red surface color (RR) in its visible spectrum, with B-V and V-R color indices of and respectively. A red surface color is typically represented with the association of tholins, polymer-like organic compounds, formed by long exposures to solar and cosmic radiation.

References

"15789 (1993 SC)". [[NASA]]/[[Jet Propulsion Laboratory]].
[http://www.johnstonsarchive.net/astro/tnoslist.html List of known trans-Neptunian objects at Johnston's Archive]

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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