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13018 Geoffjames (1988 GF)
Classification: Main-belt Asteroid          SPK-ID: 2013018
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177111612645208 7.3303e-08  
a 2.594475474980922 2.8207e-08 AU
q 2.134963739638609 1.9803e-07 AU
i 13.36264634128744 1.039e-05 deg
node 227.051155080853 2.3409e-05 deg
peri 49.45084434877363 3.6643e-05 deg
M 30.41119660204406 3.1592e-05 deg
tp 2456671.555212856768
(2014-Jan-14.05521286)
0.00013271 JED
period 1526.415549477042
4.18
2.4893e-05
6.815e-08
d
yr
n .2358466540276912 3.8462e-09 deg/d
Q 3.053987210323235 3.3203e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      969  
   data-arc span      12469 days (34.14 yr)  
   first obs. used      1980-05-17  
   last obs. used      2014-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:29:39  

Additional Information
 Earth MOID = 1.14437 AU 
 T_jup = 3.358 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO263466  
rotation period rot_per 4.3337 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ditteon, R.; Kirkpatrick, E.; Doering, K. (2010) Minor Planet Bul. 37, 1-4.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

13018 Geoffjames           Discovered 1988 Apr. 10 by E. F. Helin at Palomar.
Deputy manager for earth sciences, Geoffrey K. James (b. 1956) has provided outstanding support for minor-planet programs at the Jet Propulsion Laboratory. His experimental and theoretical research in electron scattering has led to the establishment of a unique high-resolution vacuum ultraviolet spectrometer facility.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1988 GF = 1980 KS1 = 1981 UT14 = 1995 AV 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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