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1306 Scythia

Dark Ursula asteroid from the outer regions of the asteroid belt

Field	Value
minorplanet	yes
name	1306 Scythia
background	#D6D6D6
discovery_ref
discoverer	G. Neujmin
discovery_site	Simeiz Obs.
discovered	22 July 1930
mpc_name	(1306) Scythia
alt_names	1930 OB1933 DN
1935 OA1951 JB
1957 KQ
pronounced
named_after	Scythia (Historic region)
mp_category	main-belt(outer)
Ursula
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	86.94 yr (31,756 days)
aphelion	3.4451 AU
perihelion	2.8533 AU
semimajor	3.1492 AU
eccentricity	0.0940
period	5.59 yr (2,041 days)
mean_anomaly	142.14°
mean_motion	/ day
inclination	14.935°
asc_node	274.24°
arg_peri	139.44°
dimensions	km
km
km
km
km
km
rotation	h
h
albedo

spectral_type	Tholen S
B–V 0.853
U–B 0.398
abs_magnitude	9.649.71

Note

dark Ursula asteroid

1935 OA1951 JB 1957 KQ Ursula km km km km km h

B–V 0.853 U–B 0.398

1306 Scythia, provisional designation , is a dark Ursula asteroid from the outer regions of the asteroid belt, approximately 72 kilometers in diameter. It was discovered on 22 July 1930, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for the historic region of Scythia.

Orbit and classification

Scythia is a member of the Ursula family (631), a mid-sized asteroid family in the outer main-belt. It orbits the Sun at a distance of 2.9–3.4 AU once every 5 years and 7 months (2,041 days; semi-major axis of 3.15 AU). Its orbit has an eccentricity of 0.09 and an inclination of 15° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Simeiz in July 1930.

Physical characteristics

In the Tholen classification, Scythia is a stony S-type asteroid, unlike the overall spectral type of the Ursula family which is that of a C- and X-type.

Rotation period

In September 2003, a rotational lightcurve of Scythia was obtained from photometric observations by Robert Stephens at the Santana Observatory in California. Lightcurve analysis gave a rotation period of 15.05 hours with a brightness variation of 0.15 magnitude (). In August 2008, Pierre Antonini measured a better period solution of 7.525 hours (or half the period) and an amplitude of 0.25 magnitude ().

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Scythia measures between 66.780 and 83.65 kilometers in diameter and its surface has a low albedo between 0.034 and 0.052.

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0512 and a diameter of 67.14 kilometers based on an absolute magnitude of 9.71.

Naming

This minor planet was named after the ancient region of Scythia, located east of the Black Sea. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 119).

References

{{OED. Scythian

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.

ursula-asteroids discoveries-by-grigory-neujmin named-minor-planets s-type-asteroids-(tholen) astronomical-objects-discovered-in-1930

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