(9928) 1981 WE9

(9928) 1981 WE9
Discovery[1]
Discovered byPerth Obs.
Discovery sitePerth Obs.
Discovery date16 November 1981
Designations
(9928) 1981 WE9
1981 WE9 · 1971 TJ1
1993 FC43
main-belt[1][2] · Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc65.74 yr (24,012 days)
Aphelion2.6101 AU
Perihelion1.8246 AU
2.2174 AU
Eccentricity0.1771
3.30 yr (1,206 days)
340.29°
0° 17m 54.6s / day
Inclination2.8472°
179.45°
176.04°
Physical characteristics
Dimensions2.441±0.327 km[4]
2.938±0.660 km[5]
3.00±0.42 km[6]
3.11 km (calculated)[3]
5.547±0.005 h[7]
18.310±0.0034 h[8]
18.3980±0.0034 h[3][8]
0.24 (assumed)[3]
0.283±0.152[6]
0.3557±0.2289[5]
0.428±0.109[4]
S[3]
14.4[5] · 14.60[4][6] · 14.7[1][3]

(9928) 1981 WE9, provisional designation 1981 WE9, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 16 November 1981, by astronomers at Perth Observatory in Bickley, Australia.[2]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Nugent-2015 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Clark-2008a was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Clark-2015b was invoked but never defined (see the help page).