(31669) 1999 JT6

(31669) 1999 JT6 is an Earth-crossing asteroid belonging to the Apollo family of asteroids which also crosses the orbit of Mars. 1999 JT6 is the asteroid's temporary discovery name. It has now been assigned a permanent number from the Minor Planet Center (31669) indicating that its orbit has been confirmed, but has not (at least so far) been assigned a name. Only a small fraction of asteroids have been named.

(31669) 1999 JT6
Discovery[1]
Discovered byLINEAR
Discovery siteLincoln Lab's ETS
Discovery date12 May 1999
Designations
(31669) 1999 JT6
NEO · Apollo · PHA
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc5209 days (14.26 yr)
Aphelion3.3709 AU (504.28 Gm)
Perihelion0.90316 AU (135.111 Gm)
2.1370 AU (319.69 Gm)
Eccentricity0.57737
3.12 yr (1141.1 d)
.3158 deg/day
167.37°
0° 18m 55.8s / day
Inclination9.5420°
78.848°
39.099°
Earth MOID0.000613623 AU (91,796.7 km)
Physical characteristics
5.807 h (0.2420 d)
16.0

    It has an Earth minimum orbit intersection distance of 0.00354 AU (328,978 miles), which is close enough to classify it as a potentially hazardous asteroid (PHA). It will make a close approach to Earth on 14 December 2076 at 0.0260 AU (2,506,321 miles) and an even closer approach to the minor planet Ceres on 16 Feb 2084 at 0.0171 AU (1,587,064 miles).

    Orbit of asteroid (31669) 1999 JT6 viewed from the north ecliptic pole at the epoch of 1 January 2010
    Line of intersection of orbits of asteroid (31669) 1999 JT6 and Earth's ecliptic plane

    References
    1. "31669 (1999 JT6)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 April 2016.


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