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46419 (2002 JO21)
Classification: Main-belt Asteroid          SPK-ID: 2046419
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516910374260916 3.8917e-08  
a 2.289356464503579 9.7787e-09 au
q 1.942081607364902 8.716e-08 au
i 7.101305396159179 3.6797e-06 deg
node 102.0254338678092 4.8892e-05 deg
peri 156.4597009107783 5.3512e-05 deg
M 55.39132330196471 2.468e-05 deg
tp 2458805.826069965055
(2019-Nov-18.32606997)
8.6192e-05 TDB
period 1265.227307001249
3.46
8.1064e-06
2.219e-08
d
yr
n .2845338525400991 1.823e-09 deg/d
Q 2.636631321642256 1.1262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      15447 days (42.29 yr)  
   first obs. used      1978-07-07  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:47:20  

Additional Information
 Earth MOID = .928954 au 
 Jupiter MOID = 2.42748 au 
 T_jup = 3.574 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO351161  

46419 (2002 JO21)          Discovered 2002-May-09 by Yeung, W. K. Y. at Desert Eagle
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 JO21 = 1978 NW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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