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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771020523899434 5.9156e-08  
a 2.593692548430659 1.974e-08 au
q 2.134344274835086 1.5289e-07 au
i 13.36484204870045 8.2968e-06 deg
node 227.0431378262753 2.1951e-05 deg
peri 49.2856050871395 3.1708e-05 deg
M 219.3561020688365 2.4484e-05 deg
tp 2458196.566290726827
(2018-Mar-19.06629073)
0.00010728 JED
period 1525.724669311165
4.18
1.7418e-05
4.769e-08
d
yr
n .2359534503447028 2.6937e-09 deg/d
Q 3.053040822026231 2.3236e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1189  
   data-arc span      13105 days (35.88 yr)  
   first obs. used      1980-05-17  
   last obs. used      2016-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:15:33  

Additional Information
 Earth MOID = 1.14375 au 
 Jupiter MOID = 2.08728 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 LCDB (Rev. 2016-February); Warner et al., 2009 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]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

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

[ show close-approach data ]
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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