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21495 Feaga (1998 JP2)
Classification: Main-belt Asteroid          SPK-ID: 2021495
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685199207605144 5.5878e-08  
a 2.26960952549 1.2862e-08 au
q 1.887135108097117 1.3207e-07 au
i 8.870870995084287 5.6926e-06 deg
node 93.06530010451513 3.8811e-05 deg
peri 215.7574212205917 4.3222e-05 deg
M 56.1619050578341 2.1077e-05 deg
tp 2457405.666121775484
7.2498e-05 JED
period 1248.892751921381
n .2882553361336686 2.4504e-09 deg/d
Q 2.652083942882884 1.503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      938  
   data-arc span      23857 days (65.32 yr)  
   first obs. used      1950-04-20  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55716  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:07:57  

Additional Information
 Earth MOID = .87933 au 
 Jupiter MOID = 2.58248 au 
 T_jup = 3.579 
[ 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 14.5 mag n/a MPO337440  

21495 Feaga           Discovered 1998 May 1 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Lori Michele (Lanier) Feaga (b. 1975) is a spectroscopist from the ultraviolet to the infrared. She has studied planetary satellites, including the discovery of chlorine in the atmosphere of Jupiter I (Io); and comets, most notably demonstrating the chemical heterogeneity in the natural outgassing by comet 9P/Tempel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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