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79854 (1998 XJ31)
Classification: Main-belt Asteroid          SPK-ID: 2079854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .2234719457473221 3.8329e-08  
a 2.64853651691066 1.2916e-08 au
q 2.0566629080938 1.069e-07 au
i 3.96436972341385 3.5895e-06 deg
node 284.7519650906391 6.2504e-05 deg
peri 114.3622583774843 6.3299e-05 deg
M 13.35966297283304 9.9017e-06 deg
tp 2458942.074777348408
(2020-Apr-02.57477735)
4.3095e-05 TDB
period 1574.37206292883
4.31
1.1517e-05
3.153e-08
d
yr
n .2286625941077016 1.6727e-09 deg/d
Q 3.240410125727521 1.5802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1034  
   data-arc span      7758 days (21.24 yr)  
   first obs. used      1998-08-31  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50651  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:44:55  

Additional Information
 Earth MOID = 1.06842 au 
 Jupiter MOID = 2.20181 au 
 T_jup = 3.352 
[ 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 14.8   n/a MPO449501  

79854 (1998 XJ31)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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