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11658 (1997 EQ17)
Classification: Main-belt Asteroid          SPK-ID: 2011658
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314729481622536 7.46e-08  
a 3.182081665062644 3.4954e-08 au
q 2.763724007263806 2.4374e-07 au
i 24.15575782794042 7.7119e-06 deg
node 164.6540469141985 1.4197e-05 deg
peri 26.46791481008096 2.9063e-05 deg
M 101.3961449774283 2.2786e-05 deg
tp 2456816.538316941714
(2014-Jun-08.03831694)
0.00013246 JED
period 2073.315567843149
5.68
3.4162e-05
9.353e-08
d
yr
n .1736349283165344 2.861e-09 deg/d
Q 3.600439322861483 3.955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1047  
   data-arc span      12934 days (35.41 yr)  
   first obs. used      1980-03-16  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52338  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:45:03  

Additional Information
 Earth MOID = 1.78286 au 
 Jupiter MOID = 1.40838 au 
 T_jup = 3.050 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4 mag n/a MPO302137  
rotation period rot_per 9.5192 h n/a LCDB (Rev. 2015-December); 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.]

11658 (1997 EQ17)          Discovered 1997-Mar-01 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 EQ17 = 1980 FP9 = 1992 LB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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