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78021 (2002 JY64)
Classification: Main-belt Asteroid          SPK-ID: 2078021
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1063600880262995 4.1372e-08  
a 3.001392282508955 2.3541e-08 au
q 2.682163935139846 1.1861e-07 au
i 12.88990220913037 5.0492e-06 deg
node 81.81713890841513 2.5185e-05 deg
peri 191.4058013489162 3.8859e-05 deg
M 142.028850592584 3.0092e-05 deg
tp 2458251.198433106519
(2018-May-12.69843311)		 0.00015834 TDB
period 1899.251898161445
5.20		 2.2345e-05
6.118e-08		 d
yr
n .1895483165495293 2.23e-09 deg/d
Q 3.320620629878063 2.6045e-08 au
   Orbit Determination Parameters
   # obs. used (total)      697  
   data-arc span      8052 days (22.05 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:33  

Additional Information
 Earth MOID = 1.66722 au 
 Jupiter MOID = 1.77771 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457220.5 (2015-Jul-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1086480049040639 4.0818e-08  
q 2.673193781445 1.171e-07 au
tp 2456355.517465407281
(2013-Mar-04.01746541)		 0.00015703 TDB
node 81.92846911214579 2.5226e-05 deg
peri 191.7438997364475 3.8574e-05 deg
i 12.88411845598774 5.0442e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      697  
   data-arc span      8052 days (22.05 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:33  

Additional Information
 Jupiter MOID = 1.77771 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.666137140032546E-15 -4.711891137104574E-15 -2.262038625178363E-12 1.045545359925941E-14 -4.273258369300435E-13 -8.907640954224711E-16
q -4.711891137104574E-15 1.37130946377372E-14 6.361478819152704E-12 -3.112807285755142E-14 1.23805956384674E-12 3.632854514831875E-15
tp -2.262038625178363E-12 6.361478819152704E-12 2.465986067736577E-8 -5.474092416598561E-11 4.628949041718951E-9 9.094442491005663E-12
node 1.045545359925941E-14 -3.112807285755142E-14 -5.474092416598561E-11 6.363391019190671E-10 -6.30371831606891E-10 -5.847772730251363E-11
peri -4.273258369300435E-13 1.23805956384674E-12 4.628949041718951E-9 -6.30371831606891E-10 1.487933998853874E-9 5.873472888125381E-11
i -8.907640954224711E-16 3.632854514831875E-15 9.094442491005663E-12 -5.847772730251363E-11 5.873472888125381E-11 2.54435644431591E-11

[ 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 14.5   n/a MPO449491  
diameter diameter 4.830 km 1.346 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.144   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78021 (2002 JY64)          Discovered 2002-May-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 JY64 = 2001 DR51 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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