1689 Floris-Jan

1689 Floris-Jan
Discovery[1]
Discovered byH. van Gent
Discovery siteJohannesburg Obs.
(Leiden Southern Station)
Discovery date16 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 arc89.19 yr (32,577 days)
Aphelion2.9545 AU
Perihelion1.9461 AU
2.4503 AU
Eccentricity0.2058
3.84 yr (1,401 days)
218.98°
0° 15m 25.2s / day
Inclination6.3757°
123.19°
265.10°
Physical characteristics
Dimensions13.743±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.

  1. ^ a b c d e 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 Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Pravec-2012b was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Pych-1999 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Harris-1989b was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Schober-1982d was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).