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39805 (1997 WG2)
Classification: Main-belt Asteroid          SPK-ID: 2039805
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1060456330506276 3.1212e-08  
a 2.272951339366528 7.8176e-09 au
q 2.031914775690133 7.0364e-08 au
i 1.006618554705734 3.4035e-06 deg
node 222.9390678651179 0.00020372 deg
peri 253.6128415611566 0.00020471 deg
M 227.4152136062247 1.9789e-05 deg
tp 2459661.472297259540
(2022-Mar-22.97229726)
6.9652e-05 TDB
period 1251.65210524656
3.43
6.4574e-06
1.768e-08
d
yr
n .2876198573796864 1.4839e-09 deg/d
Q 2.513987903042923 8.6467e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      9886 days (27.07 yr)  
   first obs. used      1993-09-14  
   last obs. used      2020-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:19:40  

Additional Information
 Earth MOID = 1.04837 au 
 Jupiter MOID = 2.55096 au 
 T_jup = 3.603 
[ 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 15.92   n/a E2021B10  

39805 (1997 WG2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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