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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1313407794823779 8.1296e-08  
a 3.180861899462458 3.6225e-08 AU
q 2.763085018161262 2.6777e-07 AU
i 24.15519417105943 7.981e-06 deg
node 164.659890925764 1.433e-05 deg
peri 26.31348922597016 2.9315e-05 deg
M 32.07649261315616 2.2983e-05 deg
tp 2456815.870955614976
(2014-Jun-07.37095561)
0.00013275 JED
period 2072.123557279062
5.67
3.5397e-05
9.691e-08
d
yr
n .1737348136096293 2.9678e-09 deg/d
Q 3.598638780763655 4.0983e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      12873 days (35.24 yr)  
   first obs. used      1980-03-16  
   last obs. used      2015-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52537  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:07:30  

Additional Information
 Earth MOID = 1.78309 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-July); 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., in press.]

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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