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90781 (1994 EE6)
Classification: Main-belt Asteroid          SPK-ID: 2090781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1947050952950162 4.7252e-08  
a 2.537342626588061 8.9007e-09 au
q 2.043309088682126 1.2164e-07 au
i 8.27585116877705 4.4137e-06 deg
node 141.0658569161897 2.3435e-05 deg
peri 322.5363336134 2.4651e-05 deg
M 219.1684710631894 8.4787e-06 deg
tp 2459578.016628778811
(2021-Dec-29.51662878)
3.6187e-05 TDB
period 1476.274438898244
4.04
7.7679e-06
2.127e-08
d
yr
n .2438570976468787 1.2831e-09 deg/d
Q 3.031376164493996 1.0634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      9656 days (26.44 yr)  
   first obs. used      1994-02-16  
   last obs. used      2020-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53577  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:14:01  

Additional Information
 Earth MOID = 1.06684 au 
 Jupiter MOID = 2.12549 au 
 T_jup = 3.406 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO436407  
diameter diameter 2.733 km 0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.008 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.312   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90781 (1994 EE6)          Discovered 1994-Mar-09 by Elst, E. W. at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1994 EE6 = 2000 SZ241 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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