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90450 Cyriltyson (2004 BR117)
Classification: Main-belt Asteroid          SPK-ID: 2090450
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06313406218139159 9.4829e-08  
a 3.187099930708939 7.1442e-08 AU
q 2.985885365505252 2.7731e-07 AU
i 20.44533172917039 1.1486e-05 deg
node 93.86411462623732 2.7559e-05 deg
peri 231.860489458732 9.9543e-05 deg
M 160.9571572098454 9.8861e-05 deg
tp 2456071.320241482368
0.00056659 JED
period 2078.222049052731
n .1732249930483082 5.8245e-09 deg/d
Q 3.388314495912626 7.5952e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      5335 days (14.61 yr)  
   first obs. used      2000-07-07  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65522  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 18:06:43  

Additional Information
 Earth MOID = 2.00716 AU 
 T_jup = 3.096 
[ 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 MPO244864  

90450 Cyriltyson           Discovered 2004 Jan. 28 by the Catalina Sky Survey.
Cyril deGrasse Tyson (b. 1927) worked to empower those disenfranchised by the forces of politics and economics. His work in New York City government during the American Civil Rights movement and as an administrator at the City College of New York led to greater opportunities for youth in the inner city.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 2004 BR117 = 2003 BA81 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-30 12:57 UT
(server date/time)  
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