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7658 (1993 BM12)
Classification: Main-belt Asteroid          SPK-ID: 2007658
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1293356550230038 5.0238e-08  
a 2.431494583871795 1.3587e-08 au
q 2.11701563918185 1.2649e-07 au
i 1.782500742472228 4.948e-06 deg
node 321.9347176875588 0.00014762 deg
peri 231.3947160132714 0.00014872 deg
M 328.7292828725621 2.1193e-05 deg
tp 2457520.793933698187
(2016-May-12.29393370)
8.1907e-05 JED
period 1384.868020610554
3.79
1.1608e-05
3.178e-08
d
yr
n .2599525692284272 2.1789e-09 deg/d
Q 2.745973528561739 1.5344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1466  
   data-arc span      15282 days (41.84 yr)  
   first obs. used      1974-02-14  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47177  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:04:27  

Additional Information
 Earth MOID = 1.11676 au 
 Jupiter MOID = 2.21718 au 
 T_jup = 3.495 
[ 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 13.7 mag n/a MPO332891  
rotation period rot_per 2.38 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.]

7658 (1993 BM12)          Discovered 1993-Jan-22 by Ueda, S., Kaneda, H. at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1993 BM12 = 1955 BE1 = 1974 CJ = 1976 UO2 = 1991 RW10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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