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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08171317821160938 4.2186e-08  
a 2.634674985005061 1.2826e-08 au
q 2.419387318425674 1.0962e-07 au
i 13.59402441247467 4.1518e-06 deg
node 234.1099166667087 1.7367e-05 deg
peri 149.5849727069157 3.03e-05 deg
M 123.2435290215854 2.469e-05 deg
tp 2458465.750208627442
(2018-Dec-13.25020863)
0.0001064 TDB
period 1562.028663268835
4.28
1.1406e-05
3.123e-08
d
yr
n .2304695224008458 1.6829e-09 deg/d
Q 2.849962651584449 1.3874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      8181 days (22.40 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51009  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

Additional Information
 Earth MOID = 1.43413 au 
 Jupiter MOID = 2.56453 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457407.5 (2016-Jan-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08022997742579401 4.2133e-08  
q 2.424529046849509 1.092e-07 au
tp 2456900.481817927339
(2014-Aug-30.98181793)
0.00010754 TDB
node 234.1948634184924 1.7395e-05 deg
peri 149.0050254296306 3.0738e-05 deg
i 13.57766509078294 4.1483e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      8181 days (22.40 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51009  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

Additional Information
 Jupiter MOID = 2.56453 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.775171189337153E-15 -4.57492703874393E-15 -7.027019418492824E-13 -6.204954626630601E-15 -2.015869726228532E-13 1.39697855464547E-15
q -4.57492703874393E-15 1.19252511302455E-14 1.943650913054831E-12 1.787150334824284E-14 5.575741815472302E-13 -3.803277277799637E-15
tp -7.027019418492824E-13 1.943650913054831E-12 1.156530652648497E-8 2.294158331955303E-11 2.741161340887758E-9 -8.847403204360845E-12
node -6.204954626630601E-15 1.787150334824284E-14 2.294158331955303E-11 3.025990585668655E-10 -2.882132422301692E-10 -7.340934247829548E-12
peri -2.015869726228532E-13 5.575741815472302E-13 2.741161340887758E-9 -2.882132422301692E-10 9.44835795858649E-10 4.978631094380605E-12
i 1.39697855464547E-15 -3.803277277799637E-15 -8.847403204360845E-12 -7.340934247829548E-12 4.978631094380605E-12 1.72082673074428E-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 14.7   n/a MPO459396  

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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