(9136) Lalande

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Asteroid
(9136) Lalande
Properties of the orbit ( animation )
Epoch:  March 23, 2018 ( JD 2,458,200.5)
Orbit type Main belt asteroid
Asteroid family Vesta family
Major semi-axis 2.4352  AU
eccentricity 0.1475
Perihelion - aphelion 2.0760 AU - 2.7944 AU
Inclination of the orbit plane 6.6884 °
Length of the ascending node 30.5252 °
Argument of the periapsis 289.2125 °
Sidereal period 3.80 a
Mean orbital velocity 19.08 km / s
Physical Properties
Medium diameter 3.709 ± 0.137
Albedo 0.268 ± 0.039
Rotation period 5.75 h
Absolute brightness 13.7 mag
history
Explorer C. J. v. Houten , I. v. Houten-Groeneveld
T. Gehrels
Date of discovery May 13, 1971
Another name 4886 T-1 , 1976 UW 1 , 1991 RG 21
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.

(9136) Lalande is an asteroid of the main belt , which on 13 May 1971 by the Dutch astronomer Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory ( observatory code 675) in California was discovered.

The asteroid belongs to the Vesta family, a large group of asteroids named after (4) Vesta , the second largest asteroid and third largest celestial body in the main belt. The timeless (not osculating ) orbital elements of (9136) Lalande are almost identical to those of six smaller asteroids: (52270) Noamchomsky , (90863) 1996 QR 1 , (142339) 2002 RX 201 , (144967) 2005 EX 92 , (181 663 ) 2008 AW 2 and 2015 RV 221 .

(9136) Lalande was named on April 2, 1999 after the French mathematician and astronomer of the Enlightenment Jérôme Lalande (1732-1807), who was the editor of the Connaissance des temps , the most important astronomical yearbook in France.

See also

Individual evidence

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

Web links