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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456794.5 (2014-May-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1943854907384312 4.1793e-08  
q 2.290566736987301 1.2163e-07 au
tp 2456426.793710046072
(2013-May-14.29371005)
6.5733e-05 TDB
node 190.2046093222372 0.00012425 deg
peri 236.1042448445986 0.00012518 deg
i 1.816287965929732 6.1377e-06 deg
  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
 Jupiter MOID = 1.92529 au 
 T_jup = 3.280 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.74663854150195E-15 -5.054217506229058E-15 -1.175725561497302E-12 7.043508718113933E-15 -2.922272427247354E-13 -1.604757620384274E-16
q -5.054217506229058E-15 1.47940555055584E-14 3.342172055307944E-12 -2.06527630002718E-14 8.403234422302274E-13 6.384501411429148E-16
tp -1.175725561497302E-12 3.342172055307944E-12 4.320870967419537E-9 -2.710815411131989E-11 1.011379786914494E-9 -9.200551455710069E-13
node 7.043508718113933E-15 -2.06527630002718E-14 -2.710815411131989E-11 1.543892908366421E-8 -1.543681486857522E-8 8.435719585150184E-11
peri -2.922272427247354E-13 8.403234422302274E-13 1.011379786914494E-9 -1.543681486857522E-8 1.567085463269272E-8 -8.450111237910847E-11
i -1.604757620384274E-16 6.384501411429148E-16 -9.200551455710069E-13 8.435719585150184E-11 -8.450111237910847E-11 3.767173189445767E-11

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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