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8454 Micheleferrero (1981 EG1)
Classification: Main-belt Asteroid          SPK-ID: 2008454
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06742833214320285 4.8659e-08  
a 2.615313396002004 1.5789e-08 au
q 2.438967175677813 1.2696e-07 au
i 3.616236015190186 5.8857e-06 deg
node 21.78588982573713 7.6492e-05 deg
peri 229.7738687112319 8.8523e-05 deg
M 73.09713453660804 4.4437e-05 deg
tp 2457286.823570243604
(2015-Sep-21.32357024)
0.00019072 JED
period 1544.841879619084
4.23
1.399e-05
3.83e-08
d
yr
n .2330335581585646 2.1103e-09 deg/d
Q 2.791659616326194 1.6854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1381  
   data-arc span      12584 days (34.45 yr)  
   first obs. used      1981-03-01  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48456  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:24:52  

Additional Information
 Earth MOID = 1.42655 au 
 Jupiter MOID = 2.2206 au 
 T_jup = 3.401 
[ 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 13.5 mag n/a MPO253423  
rotation period rot_per 6.7273 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.]

8454 Micheleferrero           Discovered 1981 Mar. 5 by H. Debehogne and G. De Sanctis at the European Southern Observatory.
Michele Ferrero (1925-2015) was an Italian entrepreneur, who put proceeds of his success into a foundation active in the fields of welfare, culture and art. Name proposed by M. Di Martino and P. Bianucci.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-03-23Last Updated: 2016-03-24

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Alternate Designations
 1981 EG1 = 1981 EU1 = 1981 GC1 = 1987 UZ9 = 1989 CT1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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