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85812 (1998 WR22)
Classification: Main-belt Asteroid          SPK-ID: 2085812
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1931772182107695 4.1924e-08  
a 2.843760477352887 1.6112e-08 au
q 2.294410739080126 1.219e-07 au
i 1.816369668783892 6.1366e-06 deg
node 190.1751424109979 0.00012423 deg
peri 235.7915747013822 0.00012517 deg
M 169.4574775562349 1.4376e-05 deg
tp 2458175.989511349395
(2018-Feb-26.48951135)
6.7864e-05 TDB
period 1751.612145977542
4.80
1.4886e-05
4.076e-08
d
yr
n .2055249507299407 1.7467e-09 deg/d
Q 3.393110215625648 1.9225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      624  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-11-18  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:40:11  

Additional Information
 Earth MOID = 1.30871 au 
 Jupiter MOID = 1.92529 au 
 T_jup = 3.280 
[ 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 15.3   n/a MPO468828  

85812 (1998 WR22)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 WR22 = 2000 GE11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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