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2131 Mayall

Main-belt asteroid

Field	Value
minorplanet	yes
name	2131 Mayall
background	#D6D6D6
discovery_ref
discovered	3 September 1975
discoverer	A. R. Klemola
discovery_site	Lick Obs.
mpc_name	(2131) Mayall
alt_names	1975 RA
named_after	Nicholas Mayall
mp_category	main-belt(inner)
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	41.05 yr (14,994 days)
aphelion	2.0970 AU
perihelion	1.6775 AU
semimajor	1.8873 AU
eccentricity	0.1111
period	2.59 yr (947 days)
mean_anomaly	78.045°
mean_motion	/ day
inclination	33.987°
asc_node	306.05°
arg_peri	38.552°
dimensions	7.8 km (IRAS:3)

rotation	2.5678 h
albedo	(IRAS:3)

spectral_type	S (Tholen)
S (SMASS)
S
B–V = 0.871
U–B = 0.450
abs_magnitude	12.72

S (SMASS) S B–V = 0.871 U–B = 0.450

2131 Mayall (1975 RA) is an inner main-belt asteroid discovered on September 3, 1975, by Arnold Klemola at the Lick Observatory and named in honor of Nicholas U. Mayall (1906–1993), director of the Kitt Peak National Observatory during 1960–1971, who also worked at Lick for many years. It is about 8 km (~5 miles) in diameter.

Photometric measurements of the asteroid made in 2005 at the Palmer Divide Observatory showed a light curve with a period of 2.572 ± 0.002 hours and a brightness variation of 0.08 ± 0.02 in magnitude.

This led to a follow-up investigation in 2006, when another light curve was recorded. These observations did not indicate a binary asteroid type, but did add to the data set available for this asteroid; this asteroid is part of the Hungaria group.

References

Warner, Brian D.. (March 2007). "The Lightcurve of 2131 Mayall in 2006". Minor Planet Bulletin.

Info: Wikipedia Source

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hungaria-asteroids discoveries-by-arnold-klemola named-minor-planets binary-asteroids s-type-asteroids-(tholen) s-type-asteroids-(smass) astronomical-objects-discovered-in-1975

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