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16254 Harper (2000 HZ53)
Classification: Main-belt Asteroid          SPK-ID: 2016254
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07086164919082356 7.0079e-08  
a 2.854880488102139 2.8659e-08 au
q 2.652578948472518 2.0443e-07 au
i 2.432271962824161 8.0626e-06 deg
node 157.2114894282298 0.00014301 deg
peri 171.1105037080587 0.00015233 deg
M 2.253730890422329 5.2595e-05 deg
tp 2457389.469889023096
(2016-Jan-01.96988902)
0.00025734 JED
period 1761.896226634835
4.82
2.6531e-05
7.264e-08
d
yr
n .2043253141461051 3.0767e-09 deg/d
Q 3.05718202773176 3.069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      618  
   data-arc span      13825 days (37.85 yr)  
   first obs. used      1977-09-09  
   last obs. used      2015-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53848  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:45:22  

Additional Information
 Earth MOID = 1.63915 au 
 Jupiter MOID = 2.17384 au 
 T_jup = 3.299 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a MPO259458  

16254 Harper           Discovered 2000 Apr. 29 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Named in honor of Dan Harper for mentoring a finalist in the 2002 Intel Science Talent Search, a science competition for high school seniors. Harper is a teacher at the Westlake High School, Austin, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020227/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 2000 HZ53 = 1977 RT16 = 1996 NC3 = 1997 XD13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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