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97271 (1999 XJ139)
Classification: Main-belt Asteroid          SPK-ID: 2097271
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03470488714226663 5.8411e-08  
a 2.750039300222028 2.0688e-08 au
q 2.654599496671024 1.6718e-07 au
i 5.963585288408496 6.1892e-06 deg
node 29.68698555725303 4.4059e-05 deg
peri 312.6152624899543 8.0436e-05 deg
M 221.0784497000489 6.913e-05 deg
tp 2459643.297083655086
(2022-Mar-04.79708365)
0.00032108 TDB
period 1665.738322212723
4.56
1.8797e-05
5.146e-08
d
yr
n .2161203804939694 2.4388e-09 deg/d
Q 2.845479103773031 2.1406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      576  
   data-arc span      7513 days (20.57 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:30:04  

Additional Information
 Earth MOID = 1.65144 au 
 Jupiter MOID = 2.28176 au 
 T_jup = 3.337 
[ 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 15.4   n/a MPO422301  

97271 (1999 XJ139)          Discovered 1999-Dec-02 by Spacewatch at Kitt Peak
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28

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