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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2194-Aug-30 06:36 < 00:01 Iris 0.0258554836201817 0.0258439909757872 0.0258670349140602 4.51692000592191 4.51691995669779 2522643.774860643 0.94539052337936 2028.85989236771 40.8025482230631 73.5981727822569 90899.236228494 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 20:38:04 2020-Feb-23 20:38

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