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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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771115617231162 7.7902e-08  
a 2.594475453366611 2.9909e-08 AU
q 2.134963853968561 2.0891e-07 AU
i 13.36263910518759 1.1228e-05 deg
node 227.0511700374229 2.4063e-05 deg
peri 49.4508396344847 3.8513e-05 deg
M 30.41119622216836 3.3044e-05 deg
tp 2456671.555216078796
(2014-Jan-14.05521608)
0.00013885 JED
period 1526.415530402423
4.18
2.6394e-05
7.226e-08
d
yr
n .2358466569749129 4.0782e-09 deg/d
Q 3.053987052764661 3.5206e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      11524 days (31.55 yr)  
   first obs. used      1981-10-23  
   last obs. used      2013-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4946  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 17:25:55  

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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