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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874609496151847 2.9911e-08  
a 2.640674090991175 1.0017e-08 au
q 2.145650818269754 8.0815e-08 au
i 13.78375711334452 1.9475e-06 deg
node 344.101848453443 3.577e-06 deg
peri 359.5360482918065 5.7726e-06 deg
M 342.2334203029147 6.914e-06 deg
tp 2459473.852073708389
(2021-Sep-16.35207371)
3.0187e-05 TDB
period 1567.366764441925
4.29
8.9185e-06
2.442e-08
d
yr
n .2296845946763336 1.3069e-09 deg/d
Q 3.135697363712595 1.1895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2157  
   data-arc span      14787 days (40.48 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45177  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:56:26  

Additional Information
 Earth MOID = 1.13723 au 
 Jupiter MOID = 2.27792 au 
 T_jup = 3.330 
[ 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 13.45   n/a MPO636325  
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. 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.]
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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