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13991 Kenphillips (1993 FZ6)
Classification: Main-belt Asteroid          SPK-ID: 2013991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1972974801910419 3.4211e-08  
a 2.401092620677128 9.5468e-09 au
q 1.927363096912226 8.2948e-08 au
i 3.296216508676899 3.5911e-06 deg
node 69.26356806570891 8.0413e-05 deg
peri 209.1871297735923 8.1116e-05 deg
M 37.98160557565803 1.2375e-05 deg
tp 2458857.121967955442
(2020-Jan-08.62196796)
4.6405e-05 TDB
period 1358.976029415696
3.72
8.1049e-06
2.219e-08
d
yr
n .2649053347576595 1.5799e-09 deg/d
Q 2.874822144442031 1.143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      9551 days (26.15 yr)  
   first obs. used      1993-03-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52231  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:12:46  

Additional Information
 Earth MOID = .911757 au 
 Jupiter MOID = 2.25829 au 
 T_jup = 3.497 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO431662  
rotation period rot_per 3.523 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

13991 Kenphillips           Discovered 1993 Mar. 17 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets.
Ken Phillips (b. 1946), a solar physicist at the Rutherford Appleton Laboratory, works on the heating of the solar corona and x-ray spectroscopy and solar and stellar flares.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1993 FZ6 = 1997 JD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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