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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .182751802675004 5.9505e-08  
a 2.331766380328872 1.2664e-08 AU
q 1.905631870906801 1.376e-07 AU
i 1.737079587398712 6.8026e-06 deg
node 337.6011304063626 0.0002159 deg
peri 123.0401590252017 0.0002171 deg
M 241.6100195575724 1.9804e-05 deg
tp 2457228.199191582326
(2015-Jul-24.69919158)
7.2603e-05 JED
period 1300.546789468496
3.56
1.0595e-05
2.901e-08
d
yr
n .2768066500299645 2.2551e-09 deg/d
Q 2.757900889750942 1.4979e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      7171 days (19.63 yr)  
   first obs. used      1993-11-11  
   last obs. used      2013-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59206  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 18:41:15  

Additional Information
 Earth MOID = .922708 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 14.5 mag n/a MPO266048  
rotation period rot_per 9.17 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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