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14146 Hughmaclean (1998 SP42)
Classification: Main-belt Asteroid          SPK-ID: 2014146
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212131288286264 2.9636e-08  
a 2.315431014415268 6.5929e-09 au
q 2.034770376571153 6.9833e-08 au
i 2.090093913471752 4.3925e-06 deg
node 350.9921992367901 8.631e-05 deg
peri 72.8526044718445 8.8156e-05 deg
M 4.110412107209127 1.8253e-05 deg
tp 2458985.806371289483
(2020-May-16.30637129)
6.5239e-05 TDB
period 1286.904134626459
3.52
5.4965e-06
1.505e-08
d
yr
n .2797411169282589 1.1948e-09 deg/d
Q 2.596091652259383 7.3921e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1526  
   data-arc span      25873 days (70.84 yr)  
   first obs. used      1949-12-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:41:50  

Additional Information
 Earth MOID = 1.04915 au 
 Jupiter MOID = 2.6693 au 
 T_jup = 3.571 
[ 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 14.7   n/a MPO435834  
diameter diameter 2.770 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14146 Hughmaclean           Discovered 1998 Sept. 28 by Spacewatch at Kitt Peak.
Hugh Noel Alexander Maclean (b. 1915) is an amateur astronomer in St. Catharines, Ontario, who helped found the Royal Astronomical Society of Canada, Niagara Centre, in 1960, and was president of the Niagara Centre during 1966-1968 and 1978-1979. He was employed as a shipping foreman.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

Alternate Designations
 1998 SP42 = 1989 AF2 = 1993 FW58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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