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13493 Lockwood (1985 PT)
Classification: Main-belt Asteroid          SPK-ID: 2013493
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2005593355795784 8.2809e-08  
a 2.663516310011156 2.396e-08 AU
q 2.129323248569948 2.2247e-07 AU
i 12.89169924451793 8.5514e-06 deg
node 139.3716816796689 2.8366e-05 deg
peri 201.4174939409304 3.2302e-05 deg
M 258.6905713058928 1.9078e-05 deg
tp 2457447.316120201489
8.7329e-05 JED
period 1587.747609930922
n .2267362884052223 3.0594e-09 deg/d
Q 3.197709371452365 2.8765e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      10518 days (28.80 yr)  
   first obs. used      1985-08-14  
   last obs. used      2014-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47909  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:35:07  

Additional Information
 Earth MOID = 1.12547 AU 
 T_jup = 3.320 
[ 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 13.5 mag n/a PDS3 (MPC 38314)  

13493 Lockwood           Discovered 1985 Aug. 14 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
George W. ("Wes") Lockwood (b. 1941), an astronomer at Lowell Observatory since 1973, is an expert on high-precision photometry. Central to his research has been a decades-long study of the seasonal variability of Saturn VI (Titan), Uranus, and Neptune, as well as activity cycles in the sun and solar-type stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090209/MPCPages.arcLast Updated: 2009-02-11

Alternate Designations
 1985 PT = 1992 EP5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Mar-27 06:56 UT
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