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85530 (1997 WN15)
Classification: Main-belt Asteroid          SPK-ID: 2085530
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2193877032414861 3.882e-08  
a 2.412677427060863 1.1057e-08 au
q 1.883365667675402 9.7217e-08 au
i 3.081264925620068 4.9464e-06 deg
node 89.20378906852636 7.2718e-05 deg
peri 243.6505254328016 7.4043e-05 deg
M 61.74405468813368 1.0609e-05 deg
tp 2458765.731425222039
(2019-Oct-09.23142522)
4.0527e-05 TDB
period 1368.823076925476
3.75
9.4101e-06
2.576e-08
d
yr
n .2629996572008406 1.808e-09 deg/d
Q 2.941989186446324 1.3483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      8370 days (22.92 yr)  
   first obs. used      1997-11-23  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59046  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:41  

Additional Information
 Earth MOID = .875464 au 
 Jupiter MOID = 2.43035 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456976.5 (2014-Nov-15.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2202568395734433 3.8753e-08  
q 1.880650245175605 9.7161e-08 au
tp 2457398.002512916039
(2016-Jan-10.50251292)
4.2649e-05 TDB
node 89.21900282400571 7.2775e-05 deg
peri 243.8839687202858 7.4092e-05 deg
i 3.081005182670567 4.9447e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      8370 days (22.92 yr)  
   first obs. used      1997-11-23  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59046  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:41  

Additional Information
 Jupiter MOID = 2.43035 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.501780604626244E-15 -3.752247431590216E-15 -1.133800735798823E-13 2.139866432036793E-14 -2.41516034521762E-14 -1.750343628559964E-15
q -3.752247431590216E-15 9.440227906488941E-15 1.379267277794815E-13 -5.179855902934212E-14 1.039947458295607E-14 4.636750937893165E-15
tp -1.133800735798823E-13 1.379267277794815E-13 1.818898299126727E-9 -3.28257150479625E-11 6.04374151480602E-10 1.738342889856581E-13
node 2.139866432036793E-14 -5.179855902934212E-14 -3.28257150479625E-11 5.296272728838232E-9 -5.29767567721402E-9 2.838034670123044E-11
peri -2.41516034521762E-14 1.039947458295607E-14 6.04374151480602E-10 -5.29767567721402E-9 5.489574174548336E-9 -2.83619705136224E-11
i -1.750343628559964E-15 4.636750937893165E-15 1.738342889856581E-13 2.838034670123044E-11 -2.83619705136224E-11 2.444990093355921E-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 16.4   n/a MPO436373  

85530 (1997 WN15)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1997 WN15 = 2000 KZ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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