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90449 Brucestephenson (2004 BR116)
Classification: Main-belt Asteroid          SPK-ID: 2090449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2167685842646525 6.4208e-08  
a 3.065545272628245 2.9049e-08 au
q 2.401031363881422 2.0983e-07 au
i 19.98409688868096 4.9113e-06 deg
node 24.90601796468671 1.5856e-05 deg
peri 181.876150475054 2.067e-05 deg
M 322.9469094350032 1.6452e-05 deg
tp 2459202.281787727872
(2020-Dec-18.78178773)
9.1478e-05 TDB
period 1960.469220633828
5.37
2.7866e-05
7.629e-08
d
yr
n .1836295087987204 2.6101e-09 deg/d
Q 3.730059181375068 3.5346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      8595 days (23.53 yr)  
   first obs. used      1996-10-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51937  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:32:20  

Additional Information
 Earth MOID = 1.39709 au 
 Jupiter MOID = 1.23135 au 
 T_jup = 3.106 
[ show covariance matrix ]

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 14.5   n/a MPO244864  
diameter diameter 7.082 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90449 Brucestephenson           Discovered 2004 Jan. 27 by the Catalina Sky Survey.
C. Bruce Stephenson (b. 1929) was appointed the Warner professor of astronomy at Case Western Reserve University and the Warner and Swasey Observatory in 1988. In 1977 he was codiscoverer of the unusual star SS 433.
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

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Alternate Designations
 2004 BR116 = 1999 CT128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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