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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827518030317368 5.8486e-08  
a 2.331766385161495 1.1874e-08 AU
q 1.905631874024436 1.3548e-07 AU
i 1.737073722587547 6.4755e-06 deg
node 337.6009865547015 0.00020698 deg
peri 123.0402975855625 0.00020806 deg
M 241.6100183529474 1.8356e-05 deg
tp 2457228.199197263810
(2015-Jul-24.69919726)
6.7193e-05 JED
period 1300.546793511602
3.56
9.9344e-06
2.72e-08
d
yr
n .2768066491694352 2.1144e-09 deg/d
Q 2.757900896298553 1.4044e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      851  
   data-arc span      7536 days (20.63 yr)  
   first obs. used      1993-11-11  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54687  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:38:55  

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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