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11714 Mikebrown (1998 HQ51)
Classification: Main-belt Asteroid          SPK-ID: 2011714
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 2457200.5 (2015-Jun-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2550600180099286 6.1297e-08  
a 2.673340367462194 1.9535e-08 AU
q 1.991478125190618 1.6528e-07 AU
i 3.014413539184897 8.2586e-06 deg
node 178.7288991202666 8.4519e-05 deg
peri 135.060709393093 8.5429e-05 deg
M 247.1848660563176 1.4011e-05 deg
tp 2457700.816325039771
6.3856e-05 JED
period 1596.540027193788
n .2254876131309818 2.4716e-09 deg/d
Q 3.35520260973377 2.4518e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      13789 days (37.75 yr)  
   first obs. used      1977-09-08  
   last obs. used      2015-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52737  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:07:39  

Additional Information
 Earth MOID = .978886 AU 
 T_jup = 3.331 
[ 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 14.0 mag n/a MPO340782  

11714 Mikebrown           Discovered 1998 Apr. 28 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Michael E. Brown (b. 1965) is assistant professor of astronomy at the California Institute of Technology. He is best known for his work on the Kuiper belt, cometary comae and the atmospheres of planetary satellites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1998 HQ51 = 1977 RX8 = 1986 TH5 = 1986 TW10 = 1986 UR1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Nov-26 00:16 UT
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