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21647 Carlturner (1999 NE54)
Classification: Main-belt Asteroid          SPK-ID: 2021647
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0824753416901826 3.2093e-08  
a 2.66282394773411 1.2825e-08 au
q 2.443206632783939 9.0118e-08 au
i 10.42828529785087 4.2066e-06 deg
node 191.9632865143654 2.1154e-05 deg
peri 144.655949875999 3.611e-05 deg
M 314.0384878309794 3.0007e-05 deg
tp 2459403.130080083352
(2021-Jul-07.63008008)
0.00013261 TDB
period 1587.128564476932
4.35
1.1466e-05
3.139e-08
d
yr
n .2268247248883992 1.6387e-09 deg/d
Q 2.882441262684282 1.3883e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1282  
   data-arc span      9589 days (26.25 yr)  
   first obs. used      1994-06-07  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4928  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:55:44  

Additional Information
 Earth MOID = 1.44136 au 
 Jupiter MOID = 2.43696 au 
 T_jup = 3.356 
[ 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 14.52   n/a E2021B10  
diameter diameter 8.580 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21647 Carlturner           Discovered 1999 July 12 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Carl Anthony Turner (b. 1989) was awarded first place in the 2006 Intel International Science and Engineering Fair for his engineering project. He attends the New Prague Senior High School, New Prague, Minnesota, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

Alternate Designations
 1999 NE54 = 1998 HP46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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