1994 WR12

1994 WR12
Discovery[1][2]
Discovered byC. S. Shoemaker
Discovery sitePalomar Obs.
Discovery date28 November 1994
Designations
1994 WR12
NEO · Aten[1][3]
Orbital characteristics[3]
Epoch 2022-Jan-21 (JD 2459600.5)
Uncertainty parameter 0
Observation arc27.01 yr (9,864 d)
Aphelion1.0577 AU (158.23 million km)
Perihelion0.4562 AU (68.25 million km)
0.7570 AU (113.25 million km)
Eccentricity0.39735
240.6 days (0.659 yr)
217.06°
1° 29m 45.96s / day
Inclination6.8515°
62.608°
206.03°
Earth MOID0.0018 AU (0.70 LD)
Physical characteristics
130 m (est.)[4]
92 – 210 m (CNEOS)
Mass2.9×109 kg (est.)[4]
22.3[3]

1994 WR12 is an asteroid and near-Earth object approximately 130 meters (430 feet) in diameter.[3][4] As a member of the Aten group almost all of its orbit is closer to the Sun than Earth is. On 24 November 1994 it passed about 374100 km from the Moon.[3] First imaged at Kitami Observatory on 26 November 1994,[1] it was discovered two nights later by American astronomer Carolyn S. Shoemaker at Palomar Observatory on 28 November 1994.[2] The asteroid then went unobserved from 1994 until it was recovered by Mauna Kea in March 2016.[1] It was removed from the Sentry Risk Table on 2 April 2016.[5]

Close approaches[3]
Date JPL SBDB
nominal geocentric
distance 		uncertainty
region
(3-sigma)
2021-11-29 6152189 km ± 34 km[6]
2046-11-25 1633719 km ± 4133 km
2190-11-23 135000000 km ± 815 million km[7]
  1. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference MPEC1994-Y05 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference summary was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference removed was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Horizons2021 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Horizons2190 was invoked but never defined (see the help page).