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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1287436473241622 6.5178e-08  
a 2.637885742427929 2.549e-08 AU
q 2.298274710723352 1.7723e-07 AU
i 10.29822613070009 6.9736e-06 deg
node 92.21977868238909 4.5816e-05 deg
peri 22.71588908916639 6.0447e-05 deg
M 4.523383098302745 4.1771e-05 deg
tp 2456980.837294803006
(2014-Nov-19.33729480)
0.00018141 JED
period 1564.884891923872
4.28
2.2682e-05
6.21e-08
d
yr
n .2300488693180592 3.3345e-09 deg/d
Q 2.977496774132506 2.8772e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      5862 days (16.05 yr)  
   first obs. used      1997-12-17  
   last obs. used      2014-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62871  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:48:28  

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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