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71210 (1999 XE256)
Classification: Main-belt Asteroid          SPK-ID: 2071210
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 .05762555544372715 5.133e-08  
a 2.766239211663102 1.4676e-08 au
q 2.606833140600798 1.4289e-07 au
i 5.647628207283086 5.7295e-06 deg
node 197.3737897684177 3.8278e-05 deg
peri 209.2968113845219 5.2331e-05 deg
M 190.5609086704129 3.6087e-05 deg
tp 2459791.441092832230
(2022-Jul-30.94109283)
0.00017049 TDB
period 1680.478756025306
4.60
1.3373e-05
3.661e-08
d
yr
n .2142246658633623 1.7048e-09 deg/d
Q 2.925645282725406 1.5521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      805  
   data-arc span      10289 days (28.17 yr)  
   first obs. used      1992-04-09  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54763  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:38:45  

Additional Information
 Earth MOID = 1.6172 au 
 Jupiter MOID = 2.31213 au 
 T_jup = 3.330 
[ 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 15.1   n/a MPO337799  

71210 (1999 XE256)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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