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85835 (1998 XB81)
Classification: Main-belt Asteroid          SPK-ID: 2085835
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551458315845091 3.7724e-08  
a 2.137014935881215 9.5389e-09 au
q 1.805465976545408 8.5176e-08 au
i 3.302210792158427 4.526e-06 deg
node 95.78307563111754 6.0555e-05 deg
peri 266.5301666303816 6.454e-05 deg
M 15.05817545057694 2.8017e-05 deg
tp 2458952.771298914843
(2020-Apr-13.27129891)
8.8541e-05 TDB
period 1141.063367673695
3.12
7.64e-06
2.092e-08
d
yr
n .3154951865065461 2.1124e-09 deg/d
Q 2.468563895217023 1.1019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      8643 days (23.66 yr)  
   first obs. used      1995-12-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:36  

Additional Information
 Earth MOID = .806354 au 
 Jupiter MOID = 2.98307 au 
 T_jup = 3.699 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456932.5 (2014-Oct-02.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551424909384193 3.7559e-08  
q 1.805891823087046 8.475e-08 au
tp 2456670.045268220734
(2014-Jan-12.54526822)
7.6481e-05 TDB
node 95.82235621862185 6.0537e-05 deg
peri 266.4823898696587 6.4533e-05 deg
i 3.302698870915435 4.5262e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      8643 days (23.66 yr)  
   first obs. used      1995-12-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:36  

Additional Information
 Jupiter MOID = 2.98307 au 
 T_jup = 3.699 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.410668355059497E-15 -3.172783888529816E-15 -1.503761794905864E-12 -1.094793085779121E-14 -4.396451497076927E-13 -1.975612488342812E-16
q -3.172783888529816E-15 7.182541842377342E-15 3.675543871156106E-12 2.594072041384034E-14 1.074217039945032E-12 5.179637732996589E-16
tp -1.503761794905864E-12 3.675543871156106E-12 5.849332814032422E-9 2.259404111979286E-11 1.718881780665209E-9 -3.310119377232964E-13
node -1.094793085779121E-14 2.594072041384034E-14 2.259404111979286E-11 3.664711722010779E-9 -3.651517558615205E-9 6.057500834161966E-11
peri -4.396451497076927E-13 1.074217039945032E-12 1.718881780665209E-9 -3.651517558615205E-9 4.164504009905161E-9 -6.057181915739193E-11
i -1.975612488342812E-16 5.179637732996589E-16 -3.310119377232964E-13 6.057500834161966E-11 -6.057181915739193E-11 2.048676424995621E-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 16.3   n/a MPO436375  
diameter diameter 1.459 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85835 (1998 XB81)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 XB81 = 2000 HP4 = 2001 RN44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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