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180719 (2004 JR21)
Classification: Main-belt Asteroid          SPK-ID: 2180719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0404670886360381 4.5181e-08  
a 2.767067764025779 1.9426e-08 au
q 2.655092587557025 1.3212e-07 au
i 4.511285097879252 4.5203e-06 deg
node 45.06665948875379 6.2257e-05 deg
peri 97.7788648842716 8.4041e-05 deg
M 296.4528881469235 5.6575e-05 deg
tp 2459497.270983258666
(2021-Oct-09.77098326)
0.00026455 TDB
period 1681.233825702928
4.60
1.7704e-05
4.847e-08
d
yr
n .2141284540533695 2.2549e-09 deg/d
Q 2.879042940494534 2.0212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      353  
   data-arc span      10307 days (28.22 yr)  
   first obs. used      1992-10-25  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:43:58  

Additional Information
 Earth MOID = 1.67161 au 
 Jupiter MOID = 2.10819 au 
 T_jup = 3.333 
[ 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 16.1   n/a MPO417979  

180719 (2004 JR21)          Discovered 2004-May-09 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 JR21 = 2006 VQ85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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