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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291080410601644 4.8932e-08  
a 2.43095234450277 1.1104e-08 au
q 2.117096849393404 1.2163e-07 au
i 1.78185998004254 4.8075e-06 deg
node 321.9168942753784 0.00013106 deg
peri 231.3275825922495 0.00013212 deg
M 20.79109058545932 1.6188e-05 deg
tp 2457520.546429204748
(2016-May-12.04642920)
6.2246e-05 JED
period 1384.404794350757
3.79
9.4856e-06
2.597e-08
d
yr
n .2600395501872187 1.7817e-09 deg/d
Q 2.744807839612137 1.2538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1624  
   data-arc span      15402 days (42.17 yr)  
   first obs. used      1974-02-14  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47407  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:59:52  

Additional Information
 Earth MOID = 1.1165 au 
 Jupiter MOID = 2.21861 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. 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.]

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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