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31268 Welty (1998 FA)
Classification: Main-belt Asteroid          SPK-ID: 2031268
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1287436515320567 6.4438e-08  
a 2.637885740052362 1.9512e-08 AU
q 2.298274697553679 1.7274e-07 AU
i 10.29822496005198 6.8544e-06 deg
node 92.21979288121821 4.2089e-05 deg
peri 22.71587338038128 5.5143e-05 deg
M 4.523385843784896 3.4387e-05 deg
tp 2456980.837282895224
(2014-Nov-19.33728290)
0.00014941 JED
period 1564.884889809969
4.28
1.7363e-05
4.754e-08
d
yr
n .2300488696288175 2.5525e-09 deg/d
Q 2.977496782551045 2.2024e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      785  
   data-arc span      6218 days (17.02 yr)  
   first obs. used      1997-12-17  
   last obs. used      2014-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62409  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:23:43  

Additional Information
 Earth MOID = 1.31834 AU 
 T_jup = 3.362 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO266110  

31268 Welty           Discovered 1998 Mar. 16 by I. P. Griffin at Cocoa.
Sandra Welty (b. 1969) is a high-school teacher of English at Kenwood High School, Baltimore County, Maryland. Over her career she has been an inspiring teacher for many students.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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