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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07022556507025793 5.7741e-08  
a 2.738557776754365 2.0104e-08 AU
q 2.54624100940424 1.6638e-07 AU
i 6.380925801320603 6.252e-06 deg
node 167.7732098610686 4.557e-05 deg
peri 198.8398990548914 6.1447e-05 deg
M 338.4794304482469 4.1096e-05 deg
tp 2457099.453816486878
(2015-Mar-17.95381649)
0.00018927 JED
period 1655.317432450295
4.53
1.8228e-05
4.991e-08
d
yr
n .2174809453115634 2.3949e-09 deg/d
Q 2.930874544104489 2.1516e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      865  
   data-arc span      19666 days (53.84 yr)  
   first obs. used      1960-10-17  
   last obs. used      2014-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57986  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:18:38  

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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