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JPL Small-Body Database Browser
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423681 (2005 YJ218)
Classification: Main-belt Asteroid          SPK-ID: 2423681
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 .09452537639751099 6.1754e-08  
a 2.782036565231735 2.8413e-08 au
q 2.519063511751567 1.8177e-07 au
i 10.22926327036456 7.2608e-06 deg
node 99.00230138188883 3.3806e-05 deg
peri 77.70330476260969 5.1113e-05 deg
M 344.0026745370889 3.7269e-05 deg
tp 2459075.816053853650
(2020-Aug-14.31605385)
0.00017569 TDB
period 1694.8945278494
4.64
2.5965e-05
7.109e-08
d
yr
n .2124025973797868 3.2539e-09 deg/d
Q 3.045009618711903 3.1098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      6505 days (17.81 yr)  
   first obs. used      2002-04-12  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 08:06:33  

Additional Information
 Earth MOID = 1.54844 au 
 Jupiter MOID = 2.00692 au 
 T_jup = 3.303 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457808.5 (2017-Feb-24.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09540001086580767 6.1785e-08  
q 2.515796823981681 1.8185e-07 au
tp 2457380.434859980086
(2015-Dec-23.93485998)
0.00017042 TDB
node 99.01606092545671 3.3812e-05 deg
peri 77.57535507502952 5.083e-05 deg
i 10.22968292203993 7.2611e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      6505 days (17.81 yr)  
   first obs. used      2002-04-12  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 08:06:33  

Additional Information
 Jupiter MOID = 2.00692 au 
 T_jup = 3.303 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.817394487561641E-15 -1.113562116469294E-14 -1.734338469371429E-12 -3.276314572217376E-15 -3.199363507031299E-13 -7.508612470497241E-15
q -1.113562116469294E-14 3.306981695279932E-14 5.065768176619851E-12 1.25767101342248E-14 9.677670548216951E-13 2.393516274006959E-14
tp -1.734338469371429E-12 5.065768176619851E-12 2.904160127954155E-8 -2.827265609245187E-11 6.494562523407201E-9 -6.050102761719079E-13
node -3.276314572217376E-15 1.25767101342248E-14 -2.827265609245187E-11 1.143231643810681E-9 -1.130847348455264E-9 3.083316533965598E-11
peri -3.199363507031299E-13 9.677670548216951E-13 6.494562523407201E-9 -1.130847348455264E-9 2.583684614689494E-9 -3.043982868386588E-11
i -7.508612470497241E-15 2.393516274006959E-14 -6.050102761719079E-13 3.083316533965598E-11 -3.043982868386588E-11 5.272290992308917E-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 16.3   n/a MPO419088  

423681 (2005 YJ218)          Discovered 2005-Dec-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-02-04

Alternate Designations
 2005 YJ218 = 2007 HY66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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