1389 Onnie

1389 Onnie
Light-curve-based 3D-model of Onnie
Discovery[1]
Discovered byH. van Gent
Discovery siteJohannesburg Obs.
(Leiden Southern Station)
Discovery date28 September 1935
Designations
(1389) Onnie
Named after
A. Kruyt (relative of G. Pels)[2]
1935 SS1 · 1949 QV1
1955 XB1
main-belt · Koronis[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc80.87 yr (29,539 days)
Aphelion2.9118 AU
Perihelion2.8183 AU
2.8650 AU
Eccentricity0.0163
4.85 yr (1,771 days)
183.28°
0° 12m 11.52s / day
Inclination2.0480°
174.57°
297.53°
Physical characteristics
Dimensions12.46 km (derived)[3]
13.772±0.184 km[4]
14.737±0.159 km[5]
22.5 h[6]
23.0447±0.0005 h[7]
0.1734±0.0387[5]
0.198±0.016[4]
0.24 (assumed)[3]
B–V = 0.810[1]
LS[8] · S[3][6]
11.64[1] · 11.69[3][5][6] · 11.74±0.40[8]

1389 Onnie, provisional designation 1935 SS1, is a stony Koronian asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 28 September 1935, by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa.[9]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Masiero-2014 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 Binzel-1987b was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Hanus-2011 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPC-Onnie was invoked but never defined (see the help page).