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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0709148842909708 7.0044e-08  
a 2.85492070201154 2.8791e-08 au
q 2.652464330768495 2.0436e-07 au
i 2.432320466275686 8.0626e-06 deg
node 157.2119413724247 0.00014301 deg
peri 171.0329308486669 0.00015232 deg
M 43.18361383105117 5.2841e-05 deg
tp 2457389.148183693053
(2016-Jan-01.64818369)
0.00025732 JED
period 1761.933453929482
4.82
2.6653e-05
7.297e-08
d
yr
n .2043209970258096 3.0908e-09 deg/d
Q 3.057377073254586 3.0833e-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 = 1.64037 au 
 Jupiter MOID = 2.1747 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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