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11471 Toshihirabayashi (1981 EH48)
Classification: Main-belt Asteroid          SPK-ID: 2011471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414204704644045 3.0921e-08  
a 2.573470808837042 1.0564e-08 au
q 2.209529356324896 8.2605e-08 au
i 6.278826974337153 5.2258e-06 deg
node 227.2099356017575 4.479e-05 deg
peri 236.2026846151379 5.1488e-05 deg
M 334.6459837861764 2.6345e-05 deg
tp 2459502.699276822288
(2021-Oct-15.19927682)
0.00011062 TDB
period 1507.916510488737
4.13
9.285e-06
2.542e-08
d
yr
n .2387400081476121 1.47e-09 deg/d
Q 2.937412261349188 1.2058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      15093 days (41.32 yr)  
   first obs. used      1979-10-18  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:57:07  

Additional Information
 Earth MOID = 1.23375 au 
 Jupiter MOID = 2.24013 au 
 T_jup = 3.406 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.60   n/a MPCxxxxx  
diameter diameter 2.940 km 0.788 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.324   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11471 Toshihirabayashi           Discovered 1981 Mar. 6 by S. J. Bus at Siding Spring.
Masatoshi Hirabayashi (b. 1983) is a postdoctoral researcher at Purdue University specializing in modeling structural stresses experienced by rotating asteroids and comet nuclei.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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