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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 ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682283733570959 5.0471e-08  
a 2.224440726164738 8.3431e-09 au
q 1.850226681172767 1.1176e-07 au
i 6.752299714940548 4.7765e-06 deg
node 324.5330127323417 3.7898e-05 deg
peri 27.07854480898471 3.9456e-05 deg
M 196.9851450505868 1.2474e-05 deg
tp 2459549.224516645588
(2021-Nov-30.72451665)
4.2944e-05 TDB
period 1211.796471270748
3.32
6.8176e-06
1.867e-08
d
yr
n .297079590950192 1.6714e-09 deg/d
Q 2.598654771156709 9.7467e-09 au
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      8443 days (23.12 yr)  
   first obs. used      1997-04-10  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51998  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:02  

Additional Information
 Earth MOID = .846727 au 
 Jupiter MOID = 2.82466 au 
 T_jup = 3.619 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457302.5 (2015-Oct-07.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1684879691720155 5.0572e-08  
q 1.849671215006178 1.1202e-07 au
tp 2457123.842042345610
(2015-Apr-11.34204235)
4.0156e-05 TDB
node 324.6129134326974 3.784e-05 deg
peri 26.67462010662551 3.9393e-05 deg
i 6.758171389124552 4.78e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      8443 days (23.12 yr)  
   first obs. used      1997-04-10  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51998  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:02  

Additional Information
 Jupiter MOID = 2.82466 au 
 T_jup = 3.619 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.55757750583946E-15 -5.654600762070611E-15 6.219252606686432E-13 2.748517867051975E-14 1.092202739046147E-13 -3.341426679372058E-15
q -5.654600762070611E-15 1.254921411228302E-14 -1.373332166460231E-12 -6.087087005857264E-14 -2.404313347913719E-13 7.488732086068982E-15
tp 6.219252606686432E-13 -1.373332166460231E-12 1.612528871301747E-9 9.680632927967423E-12 4.559692567886899E-10 -1.318040875102471E-12
node 2.748517867051975E-14 -6.087087005857264E-14 9.680632927967423E-12 1.431890238499639E-9 -1.41915647020212E-9 5.71245112986566E-11
peri 1.092202739046147E-13 -2.404313347913719E-13 4.559692567886899E-10 -1.41915647020212E-9 1.551828181904597E-9 -5.709447751005617E-11
i -3.341426679372058E-15 7.488732086068982E-15 -1.318040875102471E-12 5.71245112986566E-11 -5.709447751005617E-11 2.28485891554801E-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

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