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74509 Gillett (1999 FG7)
Classification: Main-belt Asteroid          SPK-ID: 2074509
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1377679226941941 4.033e-08  
a 3.113484686479051 1.7042e-08 au
q 2.684546368882648 1.3055e-07 au
i .993543871304685 4.2086e-06 deg
node 1.688048031668413 0.00025006 deg
peri 106.2935068253403 0.00025064 deg
M 6.038792385156603 1.5637e-05 deg
tp 2458966.839843888264
(2020-Apr-27.33984389)
8.7101e-05 TDB
period 2006.635669411391
5.49
1.6475e-05
4.511e-08
d
yr
n .1794047646454921 1.473e-09 deg/d
Q 3.542423004075454 1.9389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1259  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51366  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:17:29  

Additional Information
 Earth MOID = 1.70154 au 
 Jupiter MOID = 1.57939 au 
 T_jup = 3.203 
[ 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 14.4   n/a MPO337819  
diameter diameter 4.643 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.142   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74509 Gillett           Discovered 1999 Mar. 22 by C. W. Juels at Fountain Hills.
Frederick C. Gillett (1937-2001), a pioneer in infrared astronomy, was the discoverer of the infrared excess of Vega in 1983 using the Infrared Astronomy Satellite. The Gemini North 8-m Telescope was renamed the Frederick C. Gillett Gemini Telescope in his honor on 2002 Nov. 18.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

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Alternate Designations
 1999 FG7 = 1997 WW52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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