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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283914881797205 6.5723e-08  
a 2.636694298518966 2.656e-08 AU
q 2.298165193657132 1.7816e-07 AU
i 10.30017287702578 7.1816e-06 deg
node 92.22109632250864 4.729e-05 deg
peri 22.8226472923439 6.2298e-05 deg
M 318.4002039892408 4.2336e-05 deg
tp 2456981.207757799857
(2014-Nov-19.70775780)
0.00018536 JED
period 1563.824803158245
4.28
2.3629e-05
6.469e-08
d
yr
n .2302048153175194 3.4784e-09 deg/d
Q 2.9752234033808 2.997e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      762  
   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      .63348  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 11:47:41  

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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