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1864 Daedalus

Asteroid and near-Earth object

Field	Value
minorplanet	yes
name	1864 Daedalus
background	#FFC2E0
discovery_ref
discovered	24 March 1971
discoverer	T. Gehrels
discovery_site	Palomar Obs.
mpc_name	(1864) Daedalus
alt_names	1971 FA
pronounced
named_after	Daedalus (Greek mythology)
mp_category	ApolloNEO
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	46.14 yr (16,854 days)
aphelion	2.3586 AU
perihelion	0.5634 AU
semimajor	1.4610 AU
eccentricity	0.6144
period	1.77 yr (645 days)
mean_anomaly	23.049°
mean_motion	/ day
inclination	22.211°
asc_node	6.6379°
arg_peri	325.64°
moid	0.2693 AU
dimensions	km
3.00 km (derived)
km
rotation	h
h
h
albedo	0.20 (assumed)

spectral_type	SQ (Tholen)Sr (SMASS)
SqS
B–V = 0.830
U–B = 0.500
abs_magnitude	14.8514.98

3.00 km (derived) km h h

SqS B–V = 0.830 U–B = 0.500

1864 Daedalus (provisional designation ****) is a stony asteroid and near-Earth object of the Apollo group, approximately 3 kilometers in diameter. It was discovered on 24 March 1971, by Dutch–American astronomer Tom Gehrels at Palomar Observatory, California, and named after Daedalus from Greek mythology.

Orbit and classification

Daedalus is a member of the Apollo asteroids, a group of near-Earth object with an Earth-crossing orbit. It orbits the Sun in the inner main-belt at a distance of 0.6–2.4 AU once every 1 years and 9 months (645 days). Its orbit has an eccentricity of 0.61 and an inclination of 22° with respect to the ecliptic. It has an Earth minimum orbit intersection distance (MOID) of 0.2693 AU.

Physical characteristics

Daedalus is a stony asteroid, characterized as an SQ and Sr spectral type in the Tholen and SMASS taxonomy.

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, it measures 2.7 and 3.7 kilometers in diameter, respectively, and its surface has an albedo of 0.273. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 3.0 kilometers based on an absolute magnitude of 14.98.

Rotation period

Several rotational lightcurves of Daedalus were obtained by astronomers Tom Gehrels, Petr Pravec and Brian Warner. Lightcurve analysis gave a concurring rotation period of 8.572 hours with a high brightness variation of 0.85–1.04 magnitude, indicating a non-spheroidal shape ().

Naming

This minor planet was named after the Greek mythological figure Daedalus, the builder of King Minos' labyrinth, who was subsequently imprisoned there with his son Icarus. They escaped on wings of feathers and wax, but whereas Icarus was drowned when the wax in his wings melted, Daedalus went on to Sicily and built there a temple to Apollo. There is also a lunar crater called Daedalus. The official was published by the Minor Planet Center on 20 December 1974 (M.P.C. 3758).

References

{{MW. Daedalus

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.

apollo-asteroids discoveries-by-tom-gehrels named-minor-planets sq-type-asteroids-(tholen) sr-type-asteroids-(smass) astronomical-objects-discovered-in-1971

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