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85537 (1997 WP31)
Classification: Main-belt Asteroid          SPK-ID: 2085537
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0820795803228847 3.8835e-08  
a 2.633776011726272 1.2126e-08 au
q 2.417596782019299 1.0217e-07 au
i 13.59609375917564 4.1274e-06 deg
node 234.1010458136602 1.5031e-05 deg
peri 149.512945285685 2.6144e-05 deg
M 214.6190617481141 2.2697e-05 deg
tp 2460026.980487338093
(2023-Mar-23.48048734)
0.00010031 TDB
period 1561.229265479506
4.27
1.0782e-05
2.952e-08
d
yr
n .2305875299419473 1.5924e-09 deg/d
Q 2.849955241433245 1.3121e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      8601 days (23.55 yr)  
   first obs. used      1997-11-29  
   last obs. used      2021-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:51:16  

Additional Information
 Earth MOID = 1.43171 au 
 Jupiter MOID = 2.56384 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457718.5 (2016-Nov-26.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08066159370187236 3.8771e-08  
q 2.423134092111527 1.018e-07 au
tp 2458465.759108350166
(2018-Dec-13.25910835)
9.7798e-05 TDB
node 234.119805954545 1.5036e-05 deg
peri 149.4992977563577 2.6473e-05 deg
i 13.58975821981302 4.126e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      8601 days (23.55 yr)  
   first obs. used      1997-11-29  
   last obs. used      2021-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:51:16  

Additional Information
 Jupiter MOID = 2.56384 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.503206801410307E-15 -3.923199488061429E-15 1.612904246767959E-13 -1.34600482767008E-15 7.961366058074989E-15 6.404978030081664E-16
q -3.923199488061429E-15 1.036270523499356E-14 -4.83874451618221E-14 4.212894283090707E-15 4.869608818249111E-14 -1.756988384649979E-15
tp 1.612904246767959E-13 -4.83874451618221E-14 9.564539261134645E-9 1.715884592720808E-11 2.138798973626151E-9 -7.335634584123434E-12
node -1.34600482767008E-15 4.212894283090707E-15 1.715884592720808E-11 2.260894251183825E-10 -2.155515460552318E-10 -1.012896389091933E-11
peri 7.961366058074989E-15 4.869608818249111E-14 2.138798973626151E-9 -2.155515460552318E-10 7.008247857298784E-10 8.1788045858768E-12
i 6.404978030081664E-16 -1.756988384649979E-15 -7.335634584123434E-12 -1.012896389091933E-11 8.1788045858768E-12 1.702394046250442E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.74   n/a E2021B10  

85537 (1997 WP31)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1997 WP31 = 2001 UA23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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