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17382 (1981 EH11)
Classification: Main-belt Asteroid          SPK-ID: 2017382
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872225207600711 5.9792e-08  
a 2.638908782860192 1.1644e-08 au
q 2.144845628477216 1.5638e-07 au
i 13.78214615289517 5.1645e-06 deg
node 344.1167050268261 1.5601e-05 deg
peri 359.727931913467 1.8525e-05 deg
M 251.0239071147644 1.2595e-05 deg
tp 2459474.484049488627
(2021-Sep-16.98404949)
5.5878e-05 TDB
period 1565.795334538222
4.29
1.0364e-05
2.838e-08
d
yr
n .2299151057990409 1.5218e-09 deg/d
Q 3.132971937243168 1.3824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1718  
   data-arc span      14235 days (38.97 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:03:01  

Additional Information
 Earth MOID = 1.13727 au 
 Jupiter MOID = 2.28045 au 
 T_jup = 3.331 
[ 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 13.4   n/a MPO337406  
diameter diameter 5.107 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.973 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 0.390   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17382 (1981 EH11)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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