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21365 (1997 JS7)
Classification: Main-belt Asteroid          SPK-ID: 2021365
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207475263402719 5.9639e-08  
a 2.653943535366162 1.9519e-08 au
q 2.333486418423942 1.5663e-07 au
i 12.98074544722768 6.6871e-06 deg
node 170.8432166839985 2.2568e-05 deg
peri 32.14472297146042 3.3553e-05 deg
M 128.8656049648245 2.3506e-05 deg
tp 2456835.211095711672
(2014-Jun-26.71109571)
0.00010337 JED
period 1579.195671330198
4.32
1.7422e-05
4.77e-08
d
yr
n .2279641506975273 2.5149e-09 deg/d
Q 2.974400652308383 2.1876e-08 au
  Orbit Determination Parameters
   # obs. used (total)      851  
   data-arc span      6734 days (18.44 yr)  
   first obs. used      1997-05-03  
   last obs. used      2015-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52065  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 16:47:01  

Additional Information
 Earth MOID = 1.34212 au 
 Jupiter MOID = 2.00229 au 
 T_jup = 3.342 
[ 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 14.1 mag n/a MPO309321  

21365 (1997 JS7)          Discovered 1997-May-03 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 JS7 = 1999 VV179 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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