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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771484303987492 6.0243e-08  
a 2.593511647864325 2.0418e-08 au
q 2.134075130224287 1.549e-07 au
i 13.36515714924275 8.7193e-06 deg
node 227.0462770246581 2.2438e-05 deg
peri 49.32274870802922 3.3268e-05 deg
M 172.1084956583159 2.4787e-05 deg
tp 2456671.159149870473
(2014-Jan-13.65914987)
0.00010194 JED
period 1525.565051523611
4.18
1.8016e-05
4.933e-08
d
yr
n .2359781378319207 2.7867e-09 deg/d
Q 3.052948165504364 2.4035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      13000 days (35.59 yr)  
   first obs. used      1980-05-17  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4704  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:22:46  

Additional Information
 Earth MOID = 1.14233 au 
 Jupiter MOID = 2.08646 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. 2015-December); 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. (2015) 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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