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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .15149795574471 5.7675e-08  
a 2.289107611009173 1.3986e-08 au
q 1.942312487461627 1.36e-07 au
i 7.101044073102535 5.7649e-06 deg
node 102.0282727974644 5.3033e-05 deg
peri 156.6289185476832 5.9151e-05 deg
M 301.4416749489376 3.1613e-05 deg
tp 2458806.270866404176
(2019-Nov-18.77086640)
0.00011234 TDB
period 1265.02101692472
3.46
1.1593e-05
3.174e-08
d
yr
n .2845802521725402 2.608e-09 deg/d
Q 2.63590273455672 1.6104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      14890 days (40.77 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60708  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:37:35  

Additional Information
 Earth MOID = .92878 au 
 Jupiter MOID = 2.42836 au 
 T_jup = 3.574 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456737.5 (2014-Mar-21.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1521927933612548 5.7751e-08  
q 1.940415711371703 1.3623e-07 au
tp 2456274.940013210211
(2012-Dec-13.44001321)
9.7379e-05 TDB
node 102.0639813165701 5.2992e-05 deg
peri 156.3862481721906 5.9022e-05 deg
i 7.104104127025797 5.7683e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      14890 days (40.77 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60708  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:37:35  

Additional Information
 Jupiter MOID = 2.42836 au 
 T_jup = 3.574 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.335195748704982E-15 -7.840294521856804E-15 -2.104674016871555E-12 1.001837536639344E-14 -5.464869893942037E-13 9.514012042685331E-16
q -7.840294521856804E-15 1.855976213834263E-14 5.435730098636727E-12 -2.773056366234748E-14 1.421784547921478E-12 -1.347761826724497E-15
tp -2.104674016871555E-12 5.435730098636727E-12 9.482612470358764E-9 -4.863152088224278E-11 2.577910051203598E-9 5.489042458933915E-12
node 1.001837536639344E-14 -2.773056366234748E-14 -4.863152088224278E-11 2.808127674561564E-9 -2.798689321311683E-9 -4.147946017532366E-11
peri -5.464869893942037E-13 1.421784547921478E-12 2.577910051203598E-9 -2.798689321311683E-9 3.483584283099517E-9 4.265672231334384E-11
i 9.514012042685331E-16 -1.347761826724497E-15 5.489042458933915E-12 -4.147946017532366E-11 4.265672231334384E-11 3.32732726977519E-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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