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10655 Pietkeyser (9535 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2010655
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07022556858554502 5.7678e-08  
a 2.738557777697917 1.9967e-08 AU
q 2.546241000654714 1.6629e-07 AU
i 6.380925745994734 6.2491e-06 deg
node 167.7732106612995 4.4961e-05 deg
peri 198.8398993742576 6.0885e-05 deg
M 338.4794288750519 4.081e-05 deg
tp 2457099.453823771733
(2015-Mar-17.95382377)
0.00018794 JED
period 1655.317433305788
4.53
1.8104e-05
4.957e-08
d
yr
n .2174809451991659 2.3785e-09 deg/d
Q 2.93087455474112 2.137e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      19777 days (54.15 yr)  
   first obs. used      1960-10-17  
   last obs. used      2014-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5909  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:34:58  

Additional Information
 Earth MOID = 1.54498 AU 
 T_jup = 3.338 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO302131  

10655 Pietkeyser           Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Dutch navigator Pieter Dirkszoon Keyser (c. 1540-1596) sailed to the East Indies in 1595. He is credited with having invented twelve new constellations in the southern sky, first depicted in 1598 on a globe by Petrus Plancius.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 9535 P-L = 1978 RC10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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