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90695 (1981 ES39)
Classification: Main-belt Asteroid          SPK-ID: 2090695
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170545574018141 3.3406e-08  
a 3.001102653818768 2.0644e-08 au
q 2.48927787903588 1.028e-07 au
i 1.384612050546961 3.8548e-06 deg
node 278.1686654700854 0.00020347 deg
peri 177.3865690839477 0.00020401 deg
M 256.5307574541442 1.5079e-05 deg
tp 2459546.293642014357
(2021-Nov-27.79364201)
8.1478e-05 TDB
period 1898.976993458606
5.20
1.9594e-05
5.365e-08
d
yr
n .1895757564415418 1.9561e-09 deg/d
Q 3.512927428601656 2.4165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      14057 days (38.49 yr)  
   first obs. used      1979-11-24  
   last obs. used      2018-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57508  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:20:47  

Additional Information
 Earth MOID = 1.50608 au 
 Jupiter MOID = 1.66943 au 
 T_jup = 3.230 
[ 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 MPO449558  
diameter diameter 5.339 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90695 (1981 ES39)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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