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79104 (1981 EK33)
Classification: Main-belt Asteroid          SPK-ID: 2079104
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04035775710438062 5.0867e-08  
a 2.7770479427268 2.0975e-08 au
q 2.664972516387012 1.3672e-07 au
i 5.131057204135725 4.7339e-06 deg
node 292.2255271553449 7.5791e-05 deg
peri 355.8097353133591 0.00011551 deg
M 60.53854931826822 8.8124e-05 deg
tp 2458716.248344953638
(2019-Aug-20.74834495)
0.00041339 TDB
period 1690.337759478004
4.63
1.9151e-05
5.243e-08
d
yr
n .2129751867527187 2.4129e-09 deg/d
Q 2.889123369066589 2.1822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      14482 days (39.65 yr)  
   first obs. used      1981-03-01  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:24:25  

Additional Information
 Earth MOID = 1.64865 au 
 Jupiter MOID = 2.19816 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457189.5 (2015-Jun-16.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04113768444947246 5.1242e-08  
q 2.66413258140561 1.3818e-07 au
tp 2457038.562671792601
(2015-Jan-16.06267179)
0.0004019 TDB
node 292.3230634418543 7.5928e-05 deg
peri 358.7269195953401 0.00011409 deg
i 5.125129369591877 4.7299e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      14482 days (39.65 yr)  
   first obs. used      1981-03-01  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:24:25  

Additional Information
 Jupiter MOID = 2.19816 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.62578191649843E-15 -7.011600358515101E-15 5.891209516107533E-12 2.246854403667046E-14 1.096918635916105E-12 -1.696629191168654E-15
q -7.011600358515101E-15 1.909367826591767E-14 -1.609521550404131E-11 -5.341744422736E-14 -3.009174807829645E-12 5.086028099856058E-15
tp 5.891209516107533E-12 -1.609521550404131E-11 1.615264902070165E-7 4.67763370503793E-11 3.427987608662919E-8 -4.384540286788026E-11
node 2.246854403667046E-14 -5.341744422736E-14 4.67763370503793E-11 5.765073173730338E-9 -5.732924083111652E-9 1.18987366976338E-10
peri 1.096918635916105E-12 -3.009174807829645E-12 3.427987608662919E-8 -5.732924083111652E-9 1.301698967988176E-8 -1.278193239253377E-10
i -1.696629191168654E-15 5.086028099856058E-15 -4.384540286788026E-11 1.18987366976338E-10 -1.278193239253377E-10 2.237169337930257E-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 15.6   n/a MPO432340  

79104 (1981 EK33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1981 EK33 = 2001 SA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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