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1205 Ebella

Main-belt asteroid

Field	Value
minorplanet	yes
name	1205 Ebella
background	#D6D6D6
discovery_ref
discovered	6 October 1931
discoverer	K. Reinmuth
discovery_site	Heidelberg Obs.
mpc_name	(1205) Ebella
alt_names	1970 JT
named_after	Martin Ebell
(German astronomer)
mp_category	main-belt(middle)
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	85.48 yr (31,221 days)
aphelion	3.2287 AU
perihelion	1.8411 AU
semimajor	2.5349 AU
eccentricity	0.2737
period	4.04 yr (1,474 days)
mean_anomaly	103.87°
mean_motion	/ day
inclination	8.8616°
asc_node	23.083°
arg_peri	349.24°
dimensions	km
6.0 km (est. at 0.20)
albedo
abs_magnitude	13.5

(German astronomer) 6.0 km (est. at 0.20)

1205 Ebella (provisional designation ****) is a relatively eccentric asteroid from the central regions of the asteroid belt, approximately 5.5 kilometers in diameter. It was discovered by astronomer Karl Reinmuth at Heidelberg Observatory on 6 October 1931. The asteroid was named after German astronomer Martin Ebell.

Orbit and classification

Ebella orbits the Sun in the central main-belt at a distance of 1.8–3.2 AU once every 4.04 years (1,474 days). Its orbit has an eccentricity of 0.27 and an inclination of 9° with respect to the ecliptic. As no precoveries were taken and no prior identifications were made, the asteroid's observation arc begins at Heidelberg with its official discovery observation.

Physical characteristics

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ebella measures 5.474 kilometers in diameter and its surface has an albedo of 0.214, which is typical for stony S-type asteroids.

Based on a generic magnitude-to-diameter conversion, it measures 6.0 kilometers in diameter using an absolute magnitude of 13.50 with an assumed albedo of 0.20.

Lightcurve

As of 2017, no rotational lightcurve of Ebella has been obtained from photometric observations. The asteroid's rotation period, poles and shape still remain unknown.

Naming

This minor planet was named after Carl Wilhelm Ludwig Martin Ebell (1871–1944) an astronomer from Neuruppin, Germany, who was on the editorial team of the renowned astronomical journal Astronomische Nachrichten. The official naming citation was published by Paul Herget in The Names of the Minor Planets in 1955 (H 112).

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 astronomical-objects-discovered-in-1931

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