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90975 (1997 WF37)
Classification: Main-belt Asteroid          SPK-ID: 2090975
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788794524216828 3.9257e-08  
a 2.351984562093397 1.0849e-08 au
q 1.931262851521879 8.9433e-08 au
i 3.551356387202265 4.0357e-06 deg
node 112.7314114905516 6.7425e-05 deg
peri 251.2562806210759 6.8554e-05 deg
M 129.3766921745055 1.4954e-05 deg
tp 2458527.017786254645
(2019-Feb-12.51778625)
5.2711e-05 TDB
period 1317.498492838394
3.61
9.1158e-06
2.496e-08
d
yr
n .2732450943639584 1.8906e-09 deg/d
Q 2.772706272664916 1.279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      9136 days (25.01 yr)  
   first obs. used      1995-01-28  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58966  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:21:27  

Additional Information
 Earth MOID = .932461 au 
 Jupiter MOID = 2.68667 au 
 T_jup = 3.533 
[ 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 16.3   n/a MPO439640  

90975 (1997 WF37)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1997 WF37 = 2001 XB196 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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