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73703 Billings (1991 TL15)
Classification: Main-belt Asteroid          SPK-ID: 2073703
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04495973614822434 7.5319e-08  
a 3.080031226654314 3.7271e-08 au
q 2.941553835375644 2.3518e-07 au
i 10.66613534464671 7.2643e-06 deg
node 52.86151584744124 4.2261e-05 deg
peri 94.52840690964763 0.00011231 deg
M 108.3122129233299 9.7601e-05 deg
tp 2457006.473206170792
0.00053907 JED
period 1974.381651032197
n .1823355681064974 3.3096e-09 deg/d
Q 3.218508617932984 3.8947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      8597 days (23.54 yr)  
   first obs. used      1991-10-06  
   last obs. used      2015-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54136  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 18:34:30  

Additional Information
 Earth MOID = 1.97603 au 
 Jupiter MOID = 1.82284 au 
 T_jup = 3.200 
[ 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 14.2 mag n/a MPO337813  

73703 Billings           Discovered 1991 Oct. 6 by A. Lowe on plates taken at Palomar.
Gary W. Billings is a geophysicist and amateur astronomer in Calgary, Alberta. He discovered five minor planets in 1999. More recently, he has conducted extensive CCD photometry of variable stars in collaboration with observers worldwide. He served as a council member of the AAVSO from 2002 to 2004.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

[ show close-approach data ]
Alternate Designations
 1991 TL15 = 2001 QK279 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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