(8751) Nigricollis

Asteroid (8751) Nigricollis
Properties of the orbit ( animation ) Epoch:  4th November 2013 ( JD 2,456,600.5)
Orbit type	Main outer belt asteroid
Asteroid family	Koronis family
Major semi-axis	2.8976  AU
eccentricity	0.0471
Perihelion - aphelion	2.7610 AU - 3.0342 AU
Inclination of the orbit plane	2.5152 °
Length of the ascending node	148.8643 °
Argument of the periapsis	145.2280 °
Sidereal period	4.93 a
Mean orbital velocity	17.50 km / s
Physical Properties
Absolute brightness	14.0 mag
history
Explorer	Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels
Date of discovery	September 24, 1960
Another name	2594 PL , 1979 OE 1
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(8751) Nigricollis is an asteroid of the main outer belt , which was discovered on September 24, 1960 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery came about as part of the Palomar-Leiden survey , during which Tom Gehrels examined field plates recorded at the University of Leiden with the 120 cm Oschin Schmidt telescope of the Palomar observatory .

The asteroid is a member of the Koronis family, a group of asteroids named after (158) Koronis . The ageless (not osculating ) orbital elements of (8771) nigricollis are almost identical with those of six smaller, if one of the absolute brightness of 15.0, 15.8, 16.3, 16.1, 16.0 and 16 5 compared to 14.0, asteroids: (60183) Falcone , (150597) 2000 WA ₁₄₀ , (168386) 1997 SR ₂₃ , (201818) 2003 YJ ₁₉ , (229264) 2005 AR ₃₁ and (239418) 2007 TY ₉₃ .

(8751) Nigricollis is named after the black-necked grebe , whose scientific name is Podiceps nigricollis . At the time the asteroid was named on February 2, 1999, the black-necked grebe was on the Dutch Red List of Endangered Species .

Web links

• (8751) Nigricollis in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
• (8751) nigricollis in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
• Discovery Circumstances of (8751) Nigricollis according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)

Individual evidence

1. ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)