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21495 Feaga (1998 JP2)
Classification: Main-belt Asteroid          SPK-ID: 2021495
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681336042424335 3.23e-08  
a 2.269944603245309 6.2527e-09 au
q 1.888290635671015 7.2547e-08 au
i 8.872191743416884 3.1052e-06 deg
node 93.0468928583978 2.297e-05 deg
peri 215.6730489165521 2.4748e-05 deg
M 213.9638636981468 9.8046e-06 deg
tp 2459903.232953858497
(2022-Nov-19.73295386)
3.4525e-05 TDB
period 1249.169335814207
3.42
5.1614e-06
1.413e-08
d
yr
n .28819151229433 1.1908e-09 deg/d
Q 2.651598570819603 7.304e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1982  
   data-arc span      25975 days (71.12 yr)  
   first obs. used      1950-04-20  
   last obs. used      2021-06-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49275  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:34  

Additional Information
 Earth MOID = .880324 au 
 Jupiter MOID = 2.58963 au 
 T_jup = 3.579 
[ 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 3.588 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21495 Feaga           Discovered 1998 May 1 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Lori Michele (Lanier) Feaga (b. 1975) is a spectroscopist from the ultraviolet to the infrared. She has studied planetary satellites, including the discovery of chlorine in the atmosphere of Jupiter I (Io); and comets, most notably demonstrating the chemical heterogeneity in the natural outgassing by comet 9P/Tempel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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