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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1373195393100813 5.1514e-08  
a 2.26247159257951 1.0981e-08 AU
q 1.951790035784345 1.1492e-07 AU
i 4.369367038380351 4.7607e-06 deg
node 265.997089847233 7.4636e-05 deg
peri 291.9938970504953 7.6988e-05 deg
M 159.7150890224555 1.9607e-05 deg
tp 2456449.036749454775
(2013-Jun-05.53674945)
6.6655e-05 JED
period 1243.005726079949
3.40
9.0497e-06
2.478e-08
d
yr
n .2896205483584756 2.1086e-09 deg/d
Q 2.573153149374674 1.2489e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      6781 days (18.57 yr)  
   first obs. used      1996-03-19  
   last obs. used      2014-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54954  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:58:06  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (413)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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