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JPL Small-Body Database Browser
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249514 Donaldroyer (2010 CZ44)
Classification: Main-belt Asteroid          SPK-ID: 2249514
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .051533789899307 7.1021e-08  
a 2.76919099174882 3.6185e-08 au
q 2.626484084988982 2.0183e-07 au
i 6.567751456235613 8.8362e-06 deg
node 157.1789103482087 5.5334e-05 deg
peri 72.60237885157572 0.00010746 deg
M 340.76736216149 8.6894e-05 deg
tp 2458690.421624682845
(2019-Jul-25.92162468)
0.00040556 TDB
period 1683.169264540787
4.61
3.2991e-05
9.032e-08
d
yr
n .2138822325146351 4.1922e-09 deg/d
Q 2.911897898508657 3.805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1997-08-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64415  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:40:58  

Additional Information
 Earth MOID = 1.62606 au 
 Jupiter MOID = 2.0765 au 
 T_jup = 3.327 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO433635  
diameter diameter 3.109 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.061   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249514 Donaldroyer           Discovered 2010 Feb. 11 at WISE.
Donald Royer (b. 1942) is an expert in the systems needed to operate and communicate with NASA space missions. He served as the mission operations systems manager for the Wide-field Infrared Survey Explorer mission.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-12-17Last Updated: 2013-12-19

Alternate Designations
 2010 CZ44 = 2005 EM317 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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