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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516910293519774 5.6885e-08  
a 2.289356466380849 1.3528e-08 au
q 1.942081627441933 1.3486e-07 au
i 7.101306124781182 5.4196e-06 deg
node 102.0254345091804 5.1441e-05 deg
peri 156.4597027863612 5.7284e-05 deg
M 55.39131940485437 3.0764e-05 deg
tp 2458805.826083422079
(2019-Nov-18.32608342)
0.00010698 TDB
period 1265.227308557477
3.46
1.1214e-05
3.07e-08
d
yr
n .2845338521901229 2.522e-09 deg/d
Q 2.636631305319766 1.558e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      14954 days (40.94 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:27:53  

Additional Information
 Earth MOID = .928954 au 
 Jupiter MOID = 2.42748 au 
 T_jup = 3.574 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456986.5 (2014-Nov-25.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1518425384381397 5.6999e-08  
q 1.941790677165464 1.3501e-07 au
tp 2457539.873723862119
(2016-May-31.37372386)
9.9829e-05 TDB
node 102.0653995391585 5.1404e-05 deg
peri 156.3714908351262 5.7203e-05 deg
i 7.103570775701122 5.4225e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      14954 days (40.94 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:27:53  

Additional Information
 Jupiter MOID = 2.42748 au 
 T_jup = 3.574 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.248870905580696E-15 -7.671743274159541E-15 -2.591554666095566E-12 1.236712050853392E-14 -6.17362972316655E-13 -4.887242572156833E-17
q -7.671743274159541E-15 1.822708048169464E-14 6.6034627763333E-12 -3.212636460058048E-14 1.567776788204524E-12 1.015475608044307E-15
tp -2.591554666095566E-12 6.6034627763333E-12 9.965830706889708E-9 -5.047091504814509E-11 2.546574411628867E-9 7.602701765943784E-12
node 1.236712050853392E-14 -3.212636460058048E-14 -5.047091504814509E-11 2.642379756734512E-9 -2.633853416725962E-9 -4.905584410400109E-11
peri -6.17362972316655E-13 1.567776788204524E-12 2.546574411628867E-9 -2.633853416725962E-9 3.272234163852237E-9 5.049273422089335E-11
i -4.887242572156833E-17 1.015475608044307E-15 7.602701765943784E-12 -4.905584410400109E-11 5.049273422089335E-11 2.940311556084754E-11

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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