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JPL Small-Body Database Browser
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172985 Ericmelin (2006 HW147)
Classification: Main-belt Asteroid          SPK-ID: 2172985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1979861171278837 7.5504e-08  
a 2.4345633262767 1.5966e-08 au
q 1.952553586405231 1.8259e-07 au
i .5917182148894823 9.5279e-06 deg
node 287.5074962260412 0.00058941 deg
peri 53.36123888685528 0.00059038 deg
M 64.00367678750327 2.4198e-05 deg
tp 2458353.820838840448
(2018-Aug-23.32083884)
9.353e-05 TDB
period 1387.490570460132
3.80
1.3649e-05
3.737e-08
d
yr
n .2594612227747347 2.5524e-09 deg/d
Q 2.916573066148169 1.9128e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      6994 days (19.15 yr)  
   first obs. used      1999-08-17  
   last obs. used      2018-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52874  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 07:29:42  

Additional Information
 Earth MOID = .943263 au 
 Jupiter MOID = 2.47772 au 
 T_jup = 3.478 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.1   n/a MPO459804  

172985 Ericmelin           Discovered 2006 Apr. 27 by M. W. Buie at Cerro Tololo.
Eric D. Melin (b. 1977) is a software engineer at the Johns Hopkins University Applied Physics Laboratory, and served as the Ground Systems Lead for the New Horizons Mission to Pluto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-09-25Last Updated: 2018-10-01

[ show close-approach data ]
Alternate Designations
 2006 HW147 = 2007 VG111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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