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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283914609938005 6.5252e-08  
a 2.636694294113299 2.5502e-08 AU
q 2.298165261498075 1.7721e-07 AU
i 10.30017341396573 6.9752e-06 deg
node 92.22111811842647 4.5807e-05 deg
peri 22.82263942208582 6.0486e-05 deg
M 318.4001906881592 4.1478e-05 deg
tp 2456981.207815126276
(2014-Nov-19.70781513)
0.00018166 JED
period 1563.824799238741
4.28
2.2688e-05
6.212e-08
d
yr
n .2302048158944951 3.3398e-09 deg/d
Q 2.975223326728524 2.8776e-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 = 1.31801 AU 
 T_jup = 3.363 
[ 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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