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100646 (1997 WR)
Classification: Main-belt Asteroid          SPK-ID: 2100646
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509941179301637 4.537e-08  
a 2.614173631844695 1.0875e-08 au
q 2.219448790188013 1.1858e-07 au
i 3.792399713566821 5.1598e-06 deg
node 50.30076496653015 6.5818e-05 deg
peri 14.47535694660066 6.7992e-05 deg
M 163.925859763495 1.5961e-05 deg
tp 2458497.516646852175
(2019-Jan-14.01664685)		 6.7551e-05 TDB
period 1543.832117143329
4.23		 9.634e-06
2.638e-08		 d
yr
n .2331859766372367 1.4551e-09 deg/d
Q 3.008898473501378 1.2518e-08 au
   Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      8222 days (22.51 yr)  
   first obs. used      1997-11-18  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53336  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:05:02  

Additional Information
 Earth MOID = 1.23249 au 
 Jupiter MOID = 2.29666 au 
 T_jup = 3.389 
[ 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 15.36   n/a E2021B55  

100646 (1997 WR)          Discovered 1997-Nov-19 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1997 WR = 2001 QJ248 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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