Discovery[1] | |
---|---|
Discovered by | H. van Gent |
Discovery site | Johannesburg Obs. (Leiden Southern Station) |
Discovery date | 16 September 1930 |
Designations | |
(1689) Floris-Jan | |
Named after | Floris-Jan van der Meulen (Contest Winner)[2] |
1930 SO · 1926 PG 1928 DN · 1934 VV 1943 AC · 1949 OF 1949 ON1 · 1949 OY 1951 CW · 1966 BP | |
main-belt · (inner)[3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 89.19 yr (32,577 days) |
Aphelion | 2.9545 AU |
Perihelion | 1.9461 AU |
2.4503 AU | |
Eccentricity | 0.2058 |
3.84 yr (1,401 days) | |
218.98° | |
0° 15m 25.2s / day | |
Inclination | 6.3757° |
123.19° | |
265.10° | |
Physical characteristics | |
Dimensions | 13.743±1.905 km[4] 13.99±0.23 km[5] 16.122±4.950 km[6] 16.21 km (taken)[3] 16.213 km[7] |
0.083 h (fragm.)[8] 144.85±0.20 h[9] 145 h[10] | |
0.1271±0.0508[6] 0.1353[7] 0.175±0.050[4] 0.184±0.007[5] | |
S[3] B–V = 0.685[1] U–B = 0.265[1] | |
11.74±0.05[3][7][9] · 11.79±0.19[11] · 11.82[1][4][5][6] | |
1689 Floris-Jan, provisional designation 1930 SO, is a stony asteroid and a slow rotator from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. Discovered by Hendrik van Gent in 1930, it was named after a contest winner of an exhibition at Leiden Observatory.
jpldata
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