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31017 (1996 EH2)
Classification: Main-belt Asteroid          SPK-ID: 2031017
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1373195381374951 5.1353e-08  
a 2.262471593025791 1.0947e-08 AU
q 1.951790038822287 1.1449e-07 AU
i 4.36936806638684 4.6859e-06 deg
node 265.9970930788555 7.461e-05 deg
peri 291.9938924902374 7.6918e-05 deg
M 159.7150899126007 1.9533e-05 deg
tp 2456449.036746218120
(2013-Jun-05.53674622)
6.6369e-05 JED
period 1243.00572644773
3.40
9.0218e-06
2.47e-08
d
yr
n .2896205482727825 2.1021e-09 deg/d
Q 2.573153147229295 1.2451e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      6853 days (18.76 yr)  
   first obs. used      1996-03-19  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55525  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:22:56  

Additional Information
 Earth MOID = .95584 AU 
 T_jup = 3.602 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO309394  
rotation period rot_per 3.9 h n/a LCDB (Rev. 2015-Feb); 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:
[Polishook, D. (2009) Minor Planet Bul. 36, 104-107.]

31017 (1996 EH2)          Discovered 1996-Mar-15 by McNaught, R. H. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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