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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2054711145095585 3.8336e-08  
a 2.450080564315559 8.945e-09 AU
q 1.946659780127433 9.2467e-08 AU
i 6.38075565760742 3.2935e-06 deg
node 123.3149235096986 4.1555e-05 deg
peri 264.5083677778051 4.194e-05 deg
M 271.2341912746029 9.2104e-06 deg
tp 2457145.891931539625
(2015-May-03.39193154)
3.7003e-05 JED
period 1400.77691106181
3.84
7.6712e-06
2.1e-08
d
yr
n .2570002383371058 1.4074e-09 deg/d
Q 2.953501348503685 1.0783e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1503  
   data-arc span      31542 days (86.36 yr)  
   first obs. used      1928-02-25  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55585  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:00:13  

Additional Information
 Earth MOID = .9623 AU 
 T_jup = 3.459 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.82 mag n/a PDS3 (MPC 17263)  
rotation period rot_per 145. h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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.]
B-V BV .685 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=6.66, mean=7.22, max.=7.78) deg.
U-B UB .265 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 | Physical Parameters | Discovery Circumstances ]
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