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90450 Cyriltyson (2004 BR117)
Classification: Main-belt Asteroid          SPK-ID: 2090450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06532690363595912 5.6714e-08  
a 3.183389811054378 3.6981e-08 au
q 2.975428811631935 1.8424e-07 au
i 20.42327502793128 6.5211e-06 deg
node 93.68302984316257 2.2056e-05 deg
peri 234.2047691392831 6.4821e-05 deg
M 145.7854289397426 6.221e-05 deg
tp 2458160.373317870438
(2018-Feb-10.87331787)
0.00035867 TDB
period 2074.59420167191
5.68
3.615e-05
9.897e-08
d
yr
n .1735279119694237 3.0238e-09 deg/d
Q 3.391350810476822 3.9397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      7146 days (19.56 yr)  
   first obs. used      2000-07-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:11:44  

Additional Information
 Earth MOID = 1.99939 au 
 Jupiter MOID = 1.85616 au 
 T_jup = 3.097 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456731.5 (2014-Mar-15.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06356671689961896 5.5129e-08  
q 2.980652869378992 1.7726e-07 au
tp 2456063.907121963097
(2012-May-16.40712196)
0.00037516 TDB
node 93.89319586785814 2.1983e-05 deg
peri 230.3951306753938 6.7542e-05 deg
i 20.4752850020358 6.5285e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      7146 days (19.56 yr)  
   first obs. used      2000-07-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:11:44  

Additional Information
 Jupiter MOID = 1.85616 au 
 T_jup = 3.097 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.03917361500423E-15 -9.587960993215581E-15 3.822765859712507E-12 -1.218548080653263E-14 7.273334026570996E-13 5.999586685078688E-15
q -9.587960993215581E-15 3.141979365712148E-14 -1.299736817564453E-11 3.559570398393736E-14 -2.384968261498243E-12 -1.541814156534774E-14
tp 3.822765859712507E-12 -1.299736817564453E-11 1.407433414055326E-7 -2.872209903948723E-11 2.405811287720405E-8 3.001115600731999E-11
node -1.218548080653263E-14 3.559570398393736E-14 -2.872209903948723E-11 4.832369649742337E-10 -4.560950268468731E-10 -4.364148216287752E-11
peri 7.273334026570996E-13 -2.384968261498243E-12 2.405811287720405E-8 -4.560950268468731E-10 4.561954190324663E-9 4.59677868814686E-11
i 5.999586685078688E-15 -1.541814156534774E-14 3.001115600731999E-11 -4.364148216287752E-11 4.59677868814686E-11 4.262181231653827E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO459422  
diameter diameter 4.217 km 1.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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