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120982 (1998 XE6)
Classification: Main-belt Asteroid          SPK-ID: 2120982
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569439675261185 3.018e-08  
a 2.31875493009897 7.8694e-09 au
q 1.954840331648491 7.0942e-08 au
i 4.0293954451676 3.5435e-06 deg
node 89.44681452844129 6.2632e-05 deg
peri 356.6599218245364 6.4532e-05 deg
M 14.29029967280258 1.5519e-05 deg
tp 2458949.305944158670
(2020-Apr-09.80594416)
5.5529e-05 TDB
period 1289.676250663564
3.53
6.5653e-06
1.797e-08
d
yr
n .2791398227382825 1.421e-09 deg/d
Q 2.68266952854945 9.1044e-09 au
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61456  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:17:03  

Additional Information
 Earth MOID = .971138 au 
 Jupiter MOID = 2.51779 au 
 T_jup = 3.559 
[ 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 16.8   n/a MPO417630  

120982 (1998 XE6)          Discovered 1998-Dec-08 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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