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

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208546911462992 4.3338e-08  
a 2.315652374691596 1.2674e-08 au
q 2.035794922146049 9.9563e-08 au
i 2.092459048316489 7.9735e-06 deg
node 351.1294933211749 0.00011639 deg
peri 72.06027411639855 0.00012158 deg
M 333.247266853861 3.5481e-05 deg
tp 2457696.147611482575
0.00012709 JED
period 1287.088685317994
n .2797010059264538 2.2963e-09 deg/d
Q 2.595509827237144 1.4206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      9653 days (26.43 yr)  
   first obs. used      1989-01-09  
   last obs. used      2015-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53718  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:13:37  

Additional Information
 Earth MOID = 1.0484 au 
 Jupiter MOID = 2.67871 au 
 T_jup = 3.571 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7 mag n/a MPO253463  

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 | Physical Parameters | Discovery Circumstances ]
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