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17556 Pierofrancesca (1993 WB)
Classification: Main-belt Asteroid          SPK-ID: 2017556
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827642950475899 5.0043e-08  
a 2.331424567812035 1.0334e-08 AU
q 1.905323400219237 1.184e-07 AU
i 1.737103210376365 6.1976e-06 deg
node 337.6004345733146 0.00016543 deg
peri 123.0863422206088 0.00016666 deg
M 296.9292679389152 1.8237e-05 deg
tp 2457228.301117855736
(2015-Jul-24.80111786)
6.6475e-05 JED
period 1300.260830152387
3.56
8.6453e-06
2.367e-08
d
yr
n .2768675266160321 1.8409e-09 deg/d
Q 2.757525735404834 1.2223e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      993  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1993-11-11  
   last obs. used      2015-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54591  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:49:12  

Additional Information
 Earth MOID = .922684 AU 
 T_jup = 3.547 
[ 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 14.6 mag n/a MPO309291  
rotation period rot_per 9.17 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2005) Minor Planet Bul. 32, 66-68.]

17556 Pierofrancesca           Discovered 1993 Nov. 16 by V. S. Casulli at the Colleverde.
Piero della Francesca (1416-1492) was an Italian Renaissance painter and member of the second generation of Humanists.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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