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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827642927423549 5.8486e-08  
a 2.33142456748118 1.188e-08 AU
q 1.905323405323331 1.3545e-07 AU
i 1.737102199853206 6.4758e-06 deg
node 337.6004975321478 0.00020698 deg
peri 123.0862801584698 0.00020806 deg
M 296.9292675090243 1.8465e-05 deg
tp 2457228.301119359940
(2015-Jul-24.80111936)
6.7178e-05 JED
period 1300.260829875604
3.56
9.9382e-06
2.721e-08
d
yr
n .2768675266749682 2.1162e-09 deg/d
Q 2.757525729639028 1.4051e-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 = .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 14.5 mag n/a MPO266048  
rotation period rot_per 9.17 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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