From Surf Wiki (app.surf) — the open knowledge base

2181 Fogelin

Asteroid

Field	Value
minorplanet	yes
name	2181 Fogelin
background	#D6D6D6
image	002181-asteroid shape model (2181) Fogelin.png
caption	Shape model of Fogelin from its lightcurve
discovery_ref
discoverer	K. Reinmuth
discovery_site	Heidelberg Obs.
discovered	28 December 1942
mpc_name	(2181) Fogelin
alt_names	1942 YA

named_after	Eric S. Fogelin
(MPC staff member)
mp_category	main-belt(middle)
Eunomia
orbit_ref
epoch	23 March 2018 (JD 2458200.5)
uncertainty	0
observation_arc	75.08 yr (27,422 d)
aphelion	2.8986 AU
perihelion	2.2836 AU
semimajor	2.5911 AU
eccentricity	0.1187
period	4.17 yr (1,523 d)
mean_anomaly	354.25°
mean_motion	/ day
inclination	13.007°
asc_node	17.286°
arg_peri	116.18°
mean_diameter
(calculated)
rotation
albedo
0.21 (assumed)

spectral_type	S (assumed)
abs_magnitude	12.012.10

(MPC staff member) Eunomia

(calculated) 0.21 (assumed)

2181 Fogelin (prov. designation: ) is an Eunomia asteroid from the central regions of the asteroid belt, approximately 11 km in diameter. It was discovered on 28 December 1942, by Germany astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. In 1980, it was named for Eric S. Fogelin an assistant at the Minor Planet Center. The likely elongated S-type asteroid has a rotation period of 14.07 hours.

Orbit and classification

Fogelin is a member of the Eunomia family (502), a prominent family of stony asteroid and the largest one in the intermediate main belt with more than 5,000 known members. It orbits the Sun in the central main-belt at a distance of 2.3–2.9 AU once every 4 years and 2 months (1,523 days; semi-major axis of 2.59 AU). Its orbit has an eccentricity of 0.12 and an inclination of 13° with respect to the ecliptic. The body's observation arc begins at Heidelberg with its official discovery observation in December 1942.

Naming

This minor planet was named by Brian Marsden and Conrad Bardwell of the Minor Planet Center, after their assistant, Eric S. Fogelin. During 1979–1980, he was preparing the center's computerized data and helped publishing the Minor Planet Circulars. The official naming citation was published by the Minor Planet Center on 1 August 1980 (M.P.C. 5451).

Physical characteristics

Fogelin is an assumed S-type asteroid, in line with the overall spectral type seen among Eunomian asteroids. Near-IR spectroscopy at the NASA Infrared Telescope Facility with the SpeX instrument showed that the asteroid contains mafic minerals, which are rich in magnesium and iron.

Rotation period

In March 2010, a rotational lightcurve of Fogelin was obtained from photometric observations by Richard Durkee at the Shed of Science Observatory in the United States. Lightcurve analysis gave a well-defined rotation period of 14.07 hours with a brightness amplitude of 0.57 magnitude, indicative of an elongated shape ().

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Fogelin measures between 10.067 and 11.29 kilometers in diameter and its surface has an albedo between 0.200 and 0.252. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's parent body and namesake – and calculates a diameter of 11.55 kilometers based on an absolute magnitude of 12.0.

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.

eunomia-asteroids discoveries-by-karl-wilhelm-reinmuth named-minor-planets astronomical-objects-discovered-in-1942

Want to explore this topic further?

Ask Mako anything about 2181 Fogelin — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report