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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770852201378002 6.3021e-08  
a 2.594094480967742 2.2263e-08 AU
q 2.134718688747317 1.637e-07 AU
i 13.36338156356612 9.3005e-06 deg
node 227.0463260648936 2.29e-05 deg
peri 49.4101451650017 3.4548e-05 deg
M 77.62737859427489 2.6089e-05 deg
tp 2456671.429060314317
(2014-Jan-13.92906031)
0.00010899 JED
period 1526.079334792621
4.18
1.9645e-05
5.379e-08
d
yr
n .2358986140448068 3.0367e-09 deg/d
Q 3.053470273188167 2.6205e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1028  
   data-arc span      12646 days (34.62 yr)  
   first obs. used      1980-05-17  
   last obs. used      2014-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47192  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:18:15  

Additional Information
 Earth MOID = 1.14583 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 12.6 mag n/a MPO302146  
rotation period rot_per 4.3337 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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