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37452 Spirit

Main-belt asteroid

Field	Value
minorplanet	yes
name	37452 Spirit
background	#D6D6D6
discovery_ref
discovered	24 September 1960
discoverer	C. J. van Houten
I. van Houten-G.
T. Gehrels
discovery_site	Palomar Obs.
mpc_name	(37452) Spirit
alt_names	4282 P-L

named_after	Spirit (rover)
(Mars Exploration Rover)
mp_category	main-belt(outer)Hildian
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	56.28 yr (20,555 days)
aphelion	4.8206 AU
perihelion	3.0794 AU
semimajor	3.9500 AU
eccentricity	0.2204
period	7.85 yr (2,867 days)
mean_anomaly	55.498°
mean_motion	/ day
inclination	8.2643°
asc_node	352.31°
arg_peri	48.191°
jupiter_moid	0.8488 AU
dimensions	km
albedo
abs_magnitude	14.2

I. van Houten-G. T. Gehrels

(Mars Exploration Rover)

37452 Spirit (provisional designation ****) is a dark Hildian asteroid from the outermost region of the asteroid belt, approximately 9 kilometers in diameter.

The asteroid was discovered on 24 September 1960, by Dutch astronomers Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Tom Gehrels at Palomar Observatory, California. It was named after NASA's Spirit Mars rover.

Orbit and classification

Spirit is a member of the Hilda family of asteroids, which stay in a 3:2 orbital resonance with the gas-giant Jupiter, meaning that for every two orbits Jupiter completes, a Hildian asteroid will complete three orbits. As their orbit does not cross the path of any of the planets, it will therefore not be pulled out of orbit by Jupiter's gravitational field and likely remain in a stable orbit for thousands of years.

Spirit orbits the Sun in the outermost main-belt at a distance of 3.1–4.8 AU once every 7 years and 10 months (2,867 days). Its orbit has an eccentricity of 0.22 and an inclination of 8° with respect to the ecliptic.

The body's observation arc begins with its official discovery observation, as no precoveries were taken and no prior identifications were made.

Palomar–Leiden survey

The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets.

Physical characteristics

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Spirit measures 8.9 kilometers in diameter and its surface has an albedo of 0.056, which is typical value for carbonaceous C-type asteroids. It has an absolute magnitude of 14.2.

As of 2017, Spirit's rotation period and shape, as well as its spectral type remain unknown.

Naming

This minor planet was named by the discoverers for NASA's successful Mars rover Spirit which had been exploring the rocks and minerals in the Martian Gusev crater. The official naming citation was published by the Minor Planet Center on 28 September 2004 (M.P.C. 52770). 39382 Opportunity, also an asteroid of the Hilda family and discovered on the same day, was named after Spirits twin rover, Opportunity.

References

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.

hilda-asteroids discoveries-by-cornelis-johannes-van-houten discoveries-by-ingrid-van-houten-groeneveld discoveries-by-tom-gehrels discoveries-by-the-palomar–leiden-survey named-minor-planets astronomical-objects-discovered-in-1960

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