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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314492208542158 7.3713e-08  
a 3.182595233797185 3.4665e-08 au
q 2.764245570020204 2.4058e-07 au
i 24.15540787412174 7.6425e-06 deg
node 164.6543699143803 1.4002e-05 deg
peri 26.54676755491612 2.8331e-05 deg
M 136.0290011273001 2.2286e-05 deg
tp 2456816.890762145435
(2014-Jun-08.39076215)
0.00012969 JED
period 2073.817518983664
5.68
3.3882e-05
9.276e-08
d
yr
n .1735929013544204 2.8362e-09 deg/d
Q 3.600944897574165 3.9222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1067  
   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      .52015  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:46:24  

Additional Information
 Earth MOID = 1.78271 au 
 Jupiter MOID = 1.40792 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. 2016-February); 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. (2016) 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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