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91275 Billsmith (1999 EW5)
Classification: Main-belt Asteroid          SPK-ID: 2091275
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444602923206402 4.3383e-08  
a 2.387051888862906 9.6255e-09 au
q 2.042217675213234 1.0508e-07 au
i 2.925439870998129 4.0084e-06 deg
node 125.4319656274069 9.5868e-05 deg
peri 46.65451462070311 9.71e-05 deg
M 18.32338138803136 1.4136e-05 deg
tp 2459327.936285665510
(2021-Apr-23.43628567)
5.2869e-05 TDB
period 1347.073263264562
3.69
8.1479e-06
2.231e-08
d
yr
n .2672460435652615 1.6165e-09 deg/d
Q 2.731886102512578 1.1016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      9647 days (26.41 yr)  
   first obs. used      1994-12-08  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57222  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:09  

Additional Information
 Earth MOID = 1.04995 au 
 Jupiter MOID = 2.23192 au 
 T_jup = 3.518 
[ 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 16.56   n/a MPCxxxxx  

91275 Billsmith           Discovered 1999 Mar. 13 by R. A. Tucker at Goodricke-Pigott.
William S. (Bill) Smith Jr. (b. 1947) was for 15 years president of the Association of Universities for Research in Astronomy (AURA), which operates NSO, NOAO, STScI, Gemini and LSST. Bill was a strong advocate for diversity in the astronomical community.
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 2015-02-03Last Updated: 2015-02-04

Alternate Designations
 1999 EW5 = 2001 WF34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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