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85721 (1998 SL63)
Classification: Main-belt Asteroid          SPK-ID: 2085721
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682283732798592 5.0535e-08  
a 2.224440725696334 8.5932e-09 au
q 1.85022668095497 1.12e-07 au
i 6.752299875172701 4.7917e-06 deg
node 324.5329991497858 4.0804e-05 deg
peri 27.0785595316257 4.2546e-05 deg
M 196.9851442661421 1.2996e-05 deg
tp 2459549.224519112790
(2021-Nov-30.72451911)
4.446e-05 TDB
period 1211.796470887994
3.32
7.0219e-06
1.922e-08
d
yr
n .2970795910440268 1.7215e-09 deg/d
Q 2.598654770437697 1.0039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1997-04-10  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50759  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Earth MOID = .846727 au 
 Jupiter MOID = 2.82466 au 
 T_jup = 3.619 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457107.5 (2015-Mar-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685555089760819 5.0628e-08  
q 1.849677123459083 1.1225e-07 au
tp 2457123.884253279242
(2015-Apr-11.38425328)
4.2758e-05 TDB
node 324.6140108224736 4.074e-05 deg
peri 26.69022646403528 4.2475e-05 deg
i 6.758281529076195 4.7952e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1997-04-10  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50759  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Jupiter MOID = 2.82466 au 
 T_jup = 3.619 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.563241041794811E-15 -5.671696310917218E-15 6.531334027604171E-13 4.225397510682436E-14 1.062183868960493E-13 -3.741272630531233E-15
q -5.671696310917218E-15 1.26000142762951E-14 -1.467702626500813E-12 -9.357062553520976E-14 -2.43175734644376E-13 8.401018920215121E-15
tp 6.531334027604171E-13 -1.467702626500813E-12 1.828282056512402E-9 1.453494133104051E-11 5.318601447185268E-10 -1.634768419282975E-12
node 4.225397510682436E-14 -9.357062553520976E-14 1.453494133104051E-11 1.659764784993602E-9 -1.644132452306299E-9 5.233469144287416E-11
peri 1.062183868960493E-13 -2.43175734644376E-13 5.318601447185268E-10 -1.644132452306299E-9 1.804125392250309E-9 -5.244336921932648E-11
i -3.741272630531233E-15 8.401018920215121E-15 -1.634768419282975E-12 5.233469144287416E-11 -5.244336921932648E-11 2.299378567371007E-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 15.8   n/a MPO459397  

85721 (1998 SL63)          Discovered 1998-Sep-29 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 SL63 = 2000 DE40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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