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7866 Sicoli

Nysa asteroid


Nysa asteroid

FieldValue
minorplanet000257866 không biết không thấy ai đâm thất bại luôn luôn
name7866 Sicoli
background#D6D6D6
discovery_ref
discovered13 October 1982
discovererE. Bowell
discovery_siteAnderson Mesa Stn.
mpc_name(7866) Sicoli
alt_names1982 TK1954 CT
1959 OD
named_afterPiero Sicoli
(discoverer of minor planets)
mp_categorymain-beltNysa
orbit_ref
epoch4 September 2017 (JD 2458000.5)
uncertainty0
observation_arc63.01 yr (23,016 days)
aphelion2.9392 AU
perihelion1.9165 AU
semimajor2.4279 AU
eccentricity0.2106
period3.78 yr (1,382 days)
mean_anomaly112.12°
mean_motion/ day
inclination3.4801°
asc_node77.978°
arg_peri253.20°
dimensionskm
6.34 km (calculated)
albedo0.21 (assumed)
spectral_typeS
abs_magnitude13.313.4

1959 OD (discoverer of minor planets) 6.34 km (calculated)

7866 Sicoli, provisional designation , is a stony Nysa asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 13 October 1982, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona. The asteroid was named after Italian astronomer Piero Sicoli.

Orbit and classification

Sicoli is a member of the stony subgroup of the Nysa family, one of the smaller families in the main-belt, named after its namesake, 44 Nysa. The body orbits the Sun in the inner main-belt at a distance of 1.9–2.9 AU once every 3 years and 9 months (1,382 days). Its orbit has an eccentricity of 0.21 and an inclination of 3° with respect to the ecliptic. The first precovery was taken at Palomar Mountain in 1954, extending the asteroid's observation arc by 28 years prior to its discovery.

Physical characteristics

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Sicoli measures 6.3 kilometers in diameter and its surface has an albedo of 0.246, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.21 and calculates a diameter of 5.6 kilometers, based on an absolute magnitude of 13.3.

Lightcurves

As of 2016, no rotational lightcurve has been obtained for this asteroid and its rotation period and shape remain unknown.

Naming

This minor planet was named in honor of Italian astronomer Piero Sicoli (born 1954), a discoverer of minor planets and Observation Coordinator at the Sormano Astronomical Observatory in northern Italy. The official naming citation was published by the Minor Planet Center on 28 July 1999 (M.P.C. 35488).

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.

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