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16999 Ajstewart (1999 CE47)
Classification: Main-belt Asteroid          SPK-ID: 2016999
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656262166789374 3.229e-08  
a 2.42153991378285 8.6581e-09 au
q 2.020469419325956 7.7485e-08 au
i 3.051843609250308 4.5419e-06 deg
node 18.19973847495192 6.7013e-05 deg
peri 221.0956073882345 6.8494e-05 deg
M 165.6860170223455 1.4998e-05 deg
tp 2458367.039948454361
(2018-Sep-05.53994845)
5.6371e-05 TDB
period 1376.372144462102
3.77
7.3817e-06
2.021e-08
d
yr
n .2615571678404542 1.4028e-09 deg/d
Q 2.822610408239744 1.0092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      11342 days (31.05 yr)  
   first obs. used      1989-10-04  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:23:47  

Additional Information
 Earth MOID = 1.00954 au 
 Jupiter MOID = 2.1897 au 
 T_jup = 3.492 
[ 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 14.3   n/a MPO502299  
diameter diameter 4.780 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.177   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16999 Ajstewart           Discovered 1999 Feb. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Andrew James Stewart (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his environmental science project. He attends the Karabar Distance Education Centre, Queanbeyan, NSW, Australia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

Alternate Designations
 1999 CE47 = 1989 TL16 = 1997 UW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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