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27899 Letterman (1996 QF)
Classification: Main-belt Asteroid          SPK-ID: 2027899
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08648151767686331 7.2155e-08  
a 2.916873438465656 3.3636e-08 au
q 2.664617796635815 2.0935e-07 au
i 2.604691768835637 6.2065e-06 deg
node 50.3632862404833 0.00016287 deg
peri 312.0566307130902 0.00016814 deg
M 331.8643673682985 4.8759e-05 deg
tp 2457742.709624421085
0.00024797 JED
period 1819.595296176371
n .1978461918188569 3.4223e-09 deg/d
Q 3.169129080295496 3.6545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      6883 days (18.84 yr)  
   first obs. used      1996-08-17  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60513  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:41:36  

Additional Information
 Earth MOID = 1.66171 au 
 Jupiter MOID = 2.24555 au 
 T_jup = 3.274 
[ 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 14.4 mag n/a MPO337493  

27899 Letterman           Discovered 1996 Aug. 18 by D. di Cicco at Sudbury.
David M. Letterman (b. 1947) is a seven-time Emmy-winning American comedian, actor and producer. He is perhaps best known for hosting two late-night television programs.
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
 1996 QF = 1986 PY1 = 2000 KJ14 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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