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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09452537542402542 6.1621e-08  
a 2.782036562190499 2.8195e-08 au
q 2.519063511706077 1.8158e-07 au
i 10.22926535726072 7.121e-06 deg
node 99.00229396323931 3.3425e-05 deg
peri 77.70330744866381 5.0672e-05 deg
M 344.0026798888809 3.6811e-05 deg
tp 2459075.816028533697
(2020-Aug-14.31602853)
0.00017351 TDB
period 1694.894525070192
4.64
2.5766e-05
7.054e-08
d
yr
n .2124025977280746 3.2289e-09 deg/d
Q 3.045009612674921 3.086e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6582 days (18.02 yr)  
   first obs. used      2002-04-12  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 02:39:58  

Additional Information
 Earth MOID = 1.54844 au 
 Jupiter MOID = 2.00692 au 
 T_jup = 3.303 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457877.5 (2017-May-04.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09536486556865956 6.1646e-08  
q 2.516018044000347 1.8162e-07 au
tp 2457380.514816176295
(2015-Dec-24.01481618)
0.00016878 TDB
node 99.01588023669026 3.3432e-05 deg
peri 77.60237861004498 5.0403e-05 deg
i 10.22943592258259 7.1211e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6582 days (18.02 yr)  
   first obs. used      2002-04-12  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 02:39:58  

Additional Information
 Jupiter MOID = 2.00692 au 
 T_jup = 3.303 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.80023841938326E-15 -1.109871786850281E-14 -1.825260955378983E-12 -7.090342735631287E-16 -3.404756161388223E-13 -8.198437849241197E-15
q -1.109871786850281E-14 3.298726763534421E-14 5.245678071009243E-12 4.749858507001441E-15 1.01109460936439E-12 2.609848409650247E-14
tp -1.825260955378983E-12 5.245678071009243E-12 2.848761432839996E-8 -3.737436183843751E-11 6.392431402631317E-9 2.202816532854076E-12
node -7.090342735631287E-16 4.749858507001441E-15 -3.737436183843751E-11 1.117688999581656E-9 -1.107649714126287E-9 3.777205387011158E-11
peri -3.404756161388223E-13 1.01109460936439E-12 6.392431402631317E-9 -1.107649714126287E-9 2.540487175024555E-9 -3.667460868818896E-11
i -8.198437849241197E-15 2.609848409650247E-14 2.202816532854076E-12 3.777205387011158E-11 -3.667460868818896E-11 5.070937887619265E-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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