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1689 Floris-Jan (1930 SO)
Classification: Main-belt Asteroid          SPK-ID: 2001689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2064002200411141 3.1364e-08  
a 2.449341268097915 6.7349e-09 au
q 1.943796691406724 7.6461e-08 au
i 6.377958844577367 3.442e-06 deg
node 123.1669205246289 3.26e-05 deg
peri 265.1910565723088 3.3724e-05 deg
M 115.9966769263984 1.0618e-05 deg
tp 2458549.355753018892
(2019-Mar-06.85575302)
4.0226e-05 TDB
period 1400.142945614309
3.83
5.7749e-06
1.581e-08
d
yr
n .2571166045064426 1.0605e-09 deg/d
Q 2.954885844789106 8.125e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2842  
   data-arc span      33553 days (91.86 yr)  
   first obs. used      1928-02-25  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46084  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:11:38  

Additional Information
 Earth MOID = .96096 au 
 Jupiter MOID = 2.51763 au 
 T_jup = 3.459 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8   n/a MPO502169  
diameter diameter 13.743 km 1.905 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 145. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Surdej, J.; Harris, A.W.; Young, J.W. (1982) Astron. Astrophys. 115, 257-262.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
geometric albedo albedo 0.175   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.685   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.66, mean=7.22, max.=7.78) deg.
U-B UB 0.265   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.66, mean=7.22, max.=7.78) deg.

1689 Floris-Jan (1930 SO)          Discovered 1930-Sep-16 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 SO = 1926 PG = 1928 DN = 1934 VV = 1943 AC = 1949 OF = 1949 ON1 = 1949 OY = 1951 CW = 1966 BP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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