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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770852133902022 6.8004e-08  
a 2.594094484087766 2.5313e-08 AU
q 2.134718708818737 1.8056e-07 AU
i 13.3633796050423 9.82e-06 deg
node 227.0463233580098 2.3342e-05 deg
peri 49.41015006335147 3.559e-05 deg
M 77.62737502342202 2.8879e-05 deg
tp 2456671.429074857872
(2014-Jan-13.92907486)
0.00012 JED
period 1526.079337545838
4.18
2.2337e-05
6.116e-08
d
yr
n .2358986136192195 3.4528e-09 deg/d
Q 3.053470259356794 2.9796e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      985  
   data-arc span      12525 days (34.29 yr)  
   first obs. used      1980-05-17  
   last obs. used      2014-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46992  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:01:09  

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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