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109686 (2001 RF31)
Classification: Main-belt Asteroid          SPK-ID: 2109686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07250457353557968 3.6842e-08  
a 3.006443018536659 1.7727e-08 au
q 2.788462149618637 1.0976e-07 au
i .6408641299165074 3.9733e-06 deg
node 93.83821985639835 0.00044433 deg
peri 354.1881820784731 0.00044571 deg
M 116.0687053957247 3.4755e-05 deg
tp 2458386.610038001920
(2018-Sep-25.11003800)
0.00018285 TDB
period 1904.047999551904
5.21
1.684e-05
4.611e-08
d
yr
n .1890708638042329 1.6722e-09 deg/d
Q 3.22442388745468 1.9012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54288  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:07:26  

Additional Information
 Earth MOID = 1.80486 au 
 Jupiter MOID = 1.91512 au 
 T_jup = 3.247 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO469122  
rotation period rot_per 3.70 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

109686 (2001 RF31)          Discovered 2001-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 RF31 = 2002 VG34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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