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1154 Astronomia

Carbonaceous main-belt asteroid

Field	Value
minorplanet	yes
name	1154 Astronomia
background	#D6D6D6
discovery_ref
discoverer	K. Reinmuth
discovery_site	Heidelberg Obs.
discovered	8 February 1927
mpc_name	(1154) Astronomia
alt_names	1927 CBA911 RA
pronounced
named_after	astronomy
(a natural science)
mp_category	main-belt(outer)
background
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	105.83 yr (38,656 days)
aphelion	3.6308 AU
perihelion	3.1511 AU
semimajor	3.3910 AU
eccentricity	0.0707
period	6.24 yr (2,281 days)
mean_anomaly	22.461°
mean_motion	/ day
inclination	4.5323°
asc_node	82.512°
arg_peri	203.85°
dimensions	km
km
km
km
km
km
61.08 km (SIMPS)
km
rotation	h
albedo
0.0296 (SIMPS)

spectral_type	Tholen FXU:
B–V 0.658
U–B 0.229
abs_magnitude	10.4610.51

(a natural science) background km km km km km 61.08 km (SIMPS) km 0.0296 (SIMPS)

B–V 0.658 U–B 0.229

1154 Astronomia, provisional designation , is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 8 February 1927. The asteroid was named for the natural science of astronomy.

Orbit and classification

Astronomia is a background asteroid, that is, not a member of any known asteroid family. It orbits the Sun in the outer main-belt at a distance of 3.2–3.6 AU once every 6 years and 3 months (2,281 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic.

The asteroid was first identified as at Heidelberg in September 1911. The body's observation arc begins the night after its official discovery observation at Heidelberg.

Physical characteristics

In the Tholen classification, Astronomia has an ambiguous spectral type, closest to a carbonaceous F-type and somewhat similar to that of an X-type asteroid. Its spectrum has also been flagged as unusual and of poor quality (FXU:).

Rotation period

In May 2016, the first rotational lightcurve of Astronomia was obtained from photometric observations. Lightcurve analysis gave a rotation period of 18.1154 hours with a brightness variation of 0.39 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, Astronomia measures between 55.4 and 64.20 kilometers in diameter and its surface has an albedo between 0.028 and 0.04.

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is an albedo of 0.0296 and a diameter of 61.08 kilometers based on an absolute magnitude of 10.51.

Naming

This minor planet was named after the natural science of astronomy, a study of celestial objects, observations and phenomena in the night sky. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 108).

Notes

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.

background-asteroids discoveries-by-karl-wilhelm-reinmuth named-minor-planets fxu:-type-asteroids-(tholen) astronomical-objects-discovered-in-1927

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