|Discovered by K. Suzuki
MPC designation (4035) 1986 WD
Discovered 22 November 1986
Discovery site Toyota observatory
|Discovery date 22 November 1986|
Observation arc 42.71 yr (15,600 days)
Asteroid group Jupiter trojan
|Alternative names 1986 WD · 1973 SR4
Minor planet category Jupiter trojan (Greek camp)
Discoverers Takeshi Urata, Kenzo Suzuki
Similar Jupiter trojan, Sun, Solar System
(4035) 1986 WD is a carbonaceous Jupiter trojan from the Greek camp, approximately 68 kilometers in diameter. It was discovered on 22 November 1986, by Japanese astronomers Kenzo Suzuki and Takeshi Urata at the Toyota Observatory () in Japan.
The C-type Jovian asteroid orbits the Sun at a distance of 5.0–5.6 AU once every 12 years and 2 months (4,438 days). Its orbit has an eccentricity of 0.06 and an inclination of 12° with respect to the ecliptic. The first identification was made at Crimea-Nauchnij in 1973, extending the asteroid's observation arc by 13 years prior to its discovery.
In October 2009, a rotational light-curve was obtained by astronomer Stefano Mottola at the Calar Alto Observatory in Spain. It gave a well-defined rotation period of 7001134670000000000♠13.467±0.08 hours with a brightness variation of 0.21 in magnitude (U=3), superseding a previous result obtained from La Silla's ESO 1-metre telescope in May 1991, that gave a period of 7001135200000000000♠13.52±0.08 hours with an amplitude of 0.20 in magnitude (U=2).
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures between 67 and 69 kilometers in diameter and its surface has an albedo between 0.054 and 0.076. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.060 and a diameter of 68.3 kilometers.