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305581 (2008 YU42)
Classification: Main-belt Asteroid          SPK-ID: 2305581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07974920731710451 5.0491e-08  
a 2.217610300540405 2.4405e-08 au
q 2.040757636934062 1.105e-07 au
i 7.030581016687148 7.5545e-06 deg
node 267.7420744255919 6.2168e-05 deg
peri 328.8740845246098 9.2626e-05 deg
M 13.73432870068665 6.5816e-05 deg
tp 2458954.481632456434
(2020-Apr-14.98163246)
0.00022075 TDB
period 1206.219297405874
3.30
1.9912e-05
5.452e-08
d
yr
n .298453192362471 4.9268e-09 deg/d
Q 2.394462964146748 2.6351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      173  
   data-arc span      6706 days (18.36 yr)  
   first obs. used      2001-09-18  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:01  

Additional Information
 Earth MOID = 1.03146 au 
 Jupiter MOID = 2.62158 au 
 T_jup = 3.638 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457287.5 (2015-Sep-22.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08006938632345091 5.0417e-08  
q 2.039638219261837 1.1027e-07 au
tp 2457747.636458949842
(2016-Dec-25.13645895)
0.00022675 TDB
node 267.7939716999564 6.2164e-05 deg
peri 328.6615614183506 9.2499e-05 deg
i 7.030868670681878 7.5569e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      173  
   data-arc span      6706 days (18.36 yr)  
   first obs. used      2001-09-18  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:01  

Additional Information
 Jupiter MOID = 2.62158 au 
 T_jup = 3.638 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.541889940750077E-15 -5.446230577205467E-15 1.775535404596194E-12 -1.426497405251154E-14 5.794777137211598E-13 1.223582335516771E-16
q -5.446230577205467E-15 1.216017955070045E-14 -5.845840125325619E-12 3.22898360709682E-14 -1.908033919887732E-12 -5.566086044170767E-16
tp 1.775535404596194E-12 -5.845840125325619E-12 5.141694076425104E-8 -6.375635449773192E-11 1.557876688244593E-8 1.927353207060552E-11
node -1.426497405251154E-14 3.22898360709682E-14 -6.375635449773192E-11 3.864413081811164E-9 -3.854923289400772E-9 2.400163442810513E-10
peri 5.794777137211598E-13 -1.908033919887732E-12 1.557876688244593E-8 -3.854923289400772E-9 8.556060106882624E-9 -2.326735531642474E-10
i 1.223582335516771E-16 -5.566086044170767E-16 1.927353207060552E-11 2.400163442810513E-10 -2.326735531642474E-10 5.71071348237131E-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 17.1   n/a MPO423162  

305581 (2008 YU42)          Discovered 2008-Dec-29 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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