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79111 (1981 ES40)
Classification: Main-belt Asteroid          SPK-ID: 2079111
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2709305251877495 3.6976e-08  
a 2.767610385950925 1.4998e-08 au
q 2.017780250570171 1.0527e-07 au
i 8.570619355829319 4.4794e-06 deg
node 186.9555570357317 2.805e-05 deg
peri 250.6989332259464 2.9096e-05 deg
M 258.562271994994 9.0616e-06 deg
tp 2459474.363073548735
(2021-Sep-16.86307355)
4.3937e-05 TDB
period 1681.728384818773
4.60
1.3671e-05
3.743e-08
d
yr
n .2140654836118465 1.7401e-09 deg/d
Q 3.517440521331679 1.9062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      880  
   data-arc span      14416 days (39.47 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56329  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:34:15  

Additional Information
 Earth MOID = 1.05168 au 
 Jupiter MOID = 1.86637 au 
 T_jup = 3.268 
[ 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 14.6   n/a MPO299465  
diameter diameter 5.988 km 1.854 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.057   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

79111 (1981 ES40)          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 ES40 = 1999 CH103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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