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1274 Delportia

Minor planet

Field	Value
minorplanet	yes
name	1274 Delportia
background	#D6D6D6
image	Орбита астероида 1274.png
caption	Orbital diagram
discovery_ref
discovered	28 November 1932
discoverer	E. Delporte
discovery_site	Uccle Obs.
mpc_name	(1274) Delportia
alt_names	1932 WC1926 AA
1928 RX1934 JD
A918 RA
named_after	Eugène Delporte
(Belgian astronomer)
mp_category	main-beltFlora
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	98.84 yr (36,101 days)
aphelion	2.4813 AU
perihelion	1.9772 AU
semimajor	2.2292 AU
eccentricity	0.1131
period	3.33 yr (1,216 days)
mean_anomaly	33.180°
mean_motion	/ day
inclination	4.3970°
asc_node	327.09°
arg_peri	244.65°
dimensions	km
km
12.85 km (calculated)
km
rotation	h
h
h
albedo	0.20 (assumed)

spectral_type	Tholen = SS
B–V = 0.895
U–B = 0.525
abs_magnitude	11.82 (R)

1928 RX1934 JD A918 RA (Belgian astronomer) km 12.85 km (calculated) km h h

B–V = 0.895 U–B = 0.525

1274 Delportia, provisional designation , is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 November 1932, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. It was named after the discoverer himself.

Orbit and classification

Delportia is a stony S-type asteroid on the Tholen taxonomic scheme. As a member of the Flora family, one of the largest families of the main belt, it orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,216 days). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic. It was first identified as at Heidelberg Observatory in 1918. The body's observation arc begins 6 years prior to its official discovery observation at Uccle, when it was identified as at Heidelberg in 1926.

Physical characteristics

Rotation period

A rotational light curve of Delportia was obtained by American astronomer Edwin E. Sheridan in March 2007. Light curve analysis gave a well-defined rotation period of 5.615 hours with a brightness variation of 0.05 magnitude (), superseding a period of 5.5 hours with an amplitude of 0.09 magnitude obtained by French amateur astronomer René Roy in December 2005 (). In February 2010, photometric observations at the Palomar Transient Factory gave a period of 5.6204 hours and an amplitude of 0.26 magnitude ().

Diameter and albedo

According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, and the Japanese Akari satellite, Delportia measures 9.61 and 12.95 kilometers in diameter, and its surface has an albedo of 0.46 and 0.20, respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 12.85 kilometers using an absolute magnitude of 11.82.

Naming

Based on a suggestion by Gustav Stracke, this minor planet was named for its discoverer, Eugène Delporte (1882–1955), prolific discoverer of minor planets, astronomer and director at the discovering Uccle Observatory during 1936–1947. The lunar crater Delporte is also named in his honor. The official naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 117).

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.

flora-asteroids discoveries-by-eugène-joseph-delporte named-minor-planets s-type-asteroids-(tholen) astronomical-objects-discovered-in-1932

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