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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03433643771470084 5.9764e-08  
a 2.750972597870241 2.6245e-08 au
q 2.656513998608621 1.6838e-07 au
i 5.962935414631439 6.3133e-06 deg
node 29.69563176276265 5.2792e-05 deg
peri 312.7036772449202 9.374e-05 deg
M 134.5498374920924 7.6594e-05 deg
tp 2457977.614099574048
(2017-Aug-12.11409957)
0.00035605 TDB
period 1666.586361849167
4.56
2.3849e-05
6.53e-08
d
yr
n .2160104080058358 3.0912e-09 deg/d
Q 2.845431197131862 2.7146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      506  
   data-arc span      7034 days (19.26 yr)  
   first obs. used      1999-10-02  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58406  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:25:44  

Additional Information
 Earth MOID = 1.65245 au 
 Jupiter MOID = 2.28109 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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