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3946 Shor (1983 EL2)
Classification: Main-belt Asteroid          SPK-ID: 2003946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279376693341217 1.6247e-08  
a 3.091954976677022 4.911e-09 au
q 2.696377463274925 5.1482e-08 au
i .7352999249500614 9.531e-07 deg
node 325.8360876315571 2.3721e-05 deg
peri 272.9082433439867 2.3244e-05 deg
M 292.5960271289604 4.4484e-06 deg
tp 2459572.318644468521
(2021-Dec-23.81864447)
2.4519e-05 TDB
period 1985.857899871343
5.44
4.7312e-06
1.295e-08
d
yr
n .1812818530587325 4.319e-10 deg/d
Q 3.487532490079118 5.5393e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3555  
   data-arc span      25934 days (71.00 yr)  
   first obs. used      1950-03-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:19:24  

Additional Information
 Earth MOID = 1.68294 au 
 Jupiter MOID = 1.52133 au 
 T_jup = 3.212 
[ 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 12.44   n/a MPCxxxxx  
diameter diameter 17.094 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.590 h n/a LCDB (Rev. 2020-October); 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.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.087   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3946 Shor (1983 EL2)          Discovered 1983-Mar-05 by Karachkina, L. G. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1983 EL2 = 1969 UT2 = 1974 SK = 1978 GQ4 = 1980 TD12 = 1986 WJ2 = 1988 FJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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