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79100 (1981 EH30)
Classification: Main-belt Asteroid          SPK-ID: 2079100
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398339080952715 5.2218e-08  
a 3.195412067676906 3.1557e-08 au
q 2.748585110278853 1.7259e-07 au
i 8.501584739637623 5.7282e-06 deg
node 175.6297944812205 3.703e-05 deg
peri 345.6496953649516 4.1816e-05 deg
M 327.7255816345799 1.9499e-05 deg
tp 2459187.544377067643
(2020-Dec-04.04437707)
0.00011392 TDB
period 2086.357528800501
5.71
3.0906e-05
8.462e-08
d
yr
n .1725495247245437 2.5561e-09 deg/d
Q 3.64223902507496 3.597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      14234 days (38.97 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58486  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:35:27  

Additional Information
 Earth MOID = 1.75763 au 
 Jupiter MOID = 1.34359 au 
 T_jup = 3.163 
[ show covariance matrix ]

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 15.1   n/a MPO426485  
diameter diameter 4.729 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79100 (1981 EH30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1981 EH30 = 1998 FP144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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