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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06909866104063825 3.0665e-08  
a 2.739147155564082 1.0734e-08 au
q 2.549875754721331 8.4006e-08 au
i 6.37572981178655 3.5791e-06 deg
node 167.6744811803046 2.9449e-05 deg
peri 200.9584382548994 3.8789e-05 deg
M 137.3887126190177 2.5132e-05 deg
tp 2458764.568466948230
(2019-Oct-08.06846695)
0.00011523 TDB
period 1655.851835001086
4.53
9.7333e-06
2.665e-08
d
yr
n .2174107564399106 1.278e-09 deg/d
Q 2.928418556406833 1.1476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1819  
   data-arc span      22119 days (60.56 yr)  
   first obs. used      1960-10-17  
   last obs. used      2021-05-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:24:30  

Additional Information
 Earth MOID = 1.5484 au 
 Jupiter MOID = 2.40394 au 
 T_jup = 3.338 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457109.5 (2015-Mar-28.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07012988401103265 3.1057e-08  
q 2.546247698052997 8.5208e-08 au
tp 2457099.422383365420
(2015-Mar-17.92238337)
0.00011151 TDB
node 167.7735565948497 2.9391e-05 deg
peri 198.8311946113016 3.8332e-05 deg
i 6.381177936414422 3.5839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1819  
   data-arc span      22119 days (60.56 yr)  
   first obs. used      1960-10-17  
   last obs. used      2021-05-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:24:30  

Additional Information
 Jupiter MOID = 2.40394 au 
 T_jup = 3.338 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.645653351016978E-16 -2.628300227241755E-15 -5.16410999618308E-13 3.685861724102458E-15 -1.230168753466585E-13 -1.460883396864023E-16
q -2.628300227241755E-15 7.260393249232964E-15 1.44992775220267E-12 -1.096970831012666E-14 3.439874533742551E-13 5.820092546461584E-16
tp -5.16410999618308E-13 1.44992775220267E-12 1.243524535662296E-8 -4.488520748528136E-12 2.755588328111966E-9 5.076310553988874E-13
node 3.685861724102458E-15 -1.096970831012666E-14 -4.488520748528136E-12 8.638347501861589E-10 -8.592105199738249E-10 -8.521800450831325E-12
peri -1.230168753466585E-13 3.439874533742551E-13 2.755588328111966E-9 -8.592105199738249E-10 1.469348585588166E-9 8.568942322168574E-12
i -1.460883396864023E-16 5.820092546461584E-16 5.076310553988874E-13 -8.521800450831325E-12 8.568942322168574E-12 1.284430185352912E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.25   n/a E2021B10  
diameter diameter 4.187 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 94.050 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.253   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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