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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07074998892006529 7.3732e-08  
a 2.853633517432358 3.0662e-08 AU
q 2.651738977692092 2.1165e-07 AU
i 2.432144897559414 8.4529e-06 deg
node 157.2203910179677 0.00014717 deg
peri 171.4624689889833 0.00015725 deg
M 239.2688505355514 5.6082e-05 deg
tp 2457390.990014252655
(2016-Jan-03.49001425)
0.00027878 JED
period 1760.741996360705
4.82
2.8378e-05
7.769e-08
d
yr
n .2044592568042834 3.2953e-09 deg/d
Q 3.055528057172625 3.2831e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      13381 days (36.64 yr)  
   first obs. used      1977-09-09  
   last obs. used      2014-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54751  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:31:08  

Additional Information
 Earth MOID = 1.63923 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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