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21218 (1994 VP7)
Classification: Main-belt Asteroid          SPK-ID: 2021218
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1758174924293897 7.3334e-08  
a 3.000342860417372 4.6842e-08 AU
q 2.472830102270367 2.1775e-07 AU
i 13.42253112667784 8.424e-06 deg
node 57.32557336220636 3.8076e-05 deg
peri 9.388886009120535 4.9102e-05 deg
M 263.2280510912975 3.6764e-05 deg
tp 2457310.772005312932
(2015-Oct-15.27200531)
0.00020143 JED
period 1898.255889069273
5.20
4.4454e-05
1.217e-07
d
yr
n .1896477719747838 4.4413e-09 deg/d
Q 3.527855618564377 5.5078e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      9041 days (24.75 yr)  
   first obs. used      1989-10-02  
   last obs. used      2014-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5153  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:46:15  

Additional Information
 Earth MOID = 1.48632 AU 
 T_jup = 3.188 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO233639  

21218 (1994 VP7)          Discovered 1994-Nov-07 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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