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79112 (1981 EE42)
Classification: Outer Main-belt Asteroid          SPK-ID: 2079112
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342446264614258 4.1034e-08  
a 3.201116052046145 2.2842e-08 au
q 2.771383423379536 1.324e-07 au
i 13.77957737666734 4.6249e-06 deg
node 173.6130131164526 1.9979e-05 deg
peri 271.1968814979769 2.9092e-05 deg
M 20.97724149286139 1.8304e-05 deg
tp 2458878.602041366593
(2020-Jan-30.10204137)
0.00010669 TDB
period 2091.946413591143
5.73
2.2391e-05
6.13e-08
d
yr
n .1720885380529444 1.8419e-09 deg/d
Q 3.630848680712754 2.5908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      825  
   data-arc span      14233 days (38.97 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:35:49  

Additional Information
 Earth MOID = 1.83091 au 
 Jupiter MOID = 1.74425 au 
 T_jup = 3.135 
[ 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 14.5   n/a MPO502633  
diameter diameter 4.518 km 1.396 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.181   0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79112 (1981 EE42)          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 EE42 = 1998 FH144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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