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85715 (1998 SB54)
Classification: Main-belt Asteroid          SPK-ID: 2085715
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1392420099518975 3.8409e-08  
a 2.29106487756559 6.329e-09 au
q 1.972052399083159 8.761e-08 au
i 2.804975706364038 4.2813e-06 deg
node 227.2916754617683 6.7844e-05 deg
peri 166.3650710434867 6.9164e-05 deg
M 66.41081590778506 1.2328e-05 deg
tp 2458766.836529194523
(2019-Oct-10.33652919)
4.321e-05 TDB
period 1266.64381908476
3.47
5.2486e-06
1.437e-08
d
yr
n .2842156528740066 1.1777e-09 deg/d
Q 2.61007735604802 7.2102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1078  
   data-arc span      8309 days (22.75 yr)  
   first obs. used      1997-04-30  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Earth MOID = .978462 au 
 Jupiter MOID = 2.80188 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456786.5 (2014-May-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1397360452978056 3.8492e-08  
q 1.970352070016009 8.7808e-08 au
tp 2456232.012848771022
(2012-Oct-31.51284877)
4.2339e-05 TDB
node 227.3304841626368 6.791e-05 deg
peri 165.8616503796208 6.9211e-05 deg
i 2.802851314966985 4.2821e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1078  
   data-arc span      8309 days (22.75 yr)  
   first obs. used      1997-04-30  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Jupiter MOID = 2.80188 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.481668188836862E-15 -3.373532515854133E-15 -6.900448425751567E-14 -1.489099976056221E-14 -1.097990902178632E-14 -3.859258508467479E-16
q -3.373532515854133E-15 7.710206550979802E-15 1.430680714438857E-13 3.347850411310824E-14 2.490503968377555E-14 9.518586379284437E-16
tp -6.900448425751567E-14 1.430680714438857E-13 1.792630189503525E-9 -7.220403260163033E-13 5.716461180187976E-10 -2.178727872360586E-13
node -1.489099976056221E-14 3.347850411310824E-14 -7.220403260163033E-13 4.611733415357679E-9 -4.606184340503944E-9 -4.342805328330604E-11
peri -1.097990902178632E-14 2.490503968377555E-14 5.716461180187976E-10 -4.606184340503944E-9 4.790138439094988E-9 4.333675782069796E-11
i -3.859258508467479E-16 9.518586379284437E-16 -2.178727872360586E-13 -4.342805328330604E-11 4.333675782069796E-11 1.833641482370934E-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 15.7   n/a MPO412683  

85715 (1998 SB54)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 SB54 = 1997 HT10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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