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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197244319679318 3.4232e-08  
a 2.400821773994017 9.4176e-09 au
q 1.927273316511273 8.297e-08 au
i 3.296892835207444 3.5918e-06 deg
node 69.26979974588464 8.0385e-05 deg
peri 209.3259488962314 8.1086e-05 deg
M 291.9097875404941 1.2158e-05 deg
tp 2458857.492528431352
(2020-Jan-08.99252843)
4.6381e-05 TDB
period 1358.74609423943
3.72
7.9948e-06
2.189e-08
d
yr
n .2649501636297348 1.559e-09 deg/d
Q 2.87437023147676 1.1275e-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 = .911133 au 
 Jupiter MOID = 2.25828 au 
 T_jup = 3.497 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456483.5 (2013-Jul-10.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980189493876271 3.4314e-08  
q 1.924965834926908 8.3179e-08 au
tp 2456136.855056757680
(2012-Jul-28.35505676)
4.298e-05 TDB
node 69.37011320392736 8.019e-05 deg
peri 208.7107568668544 8.0884e-05 deg
i 3.301223704053437 3.5968e-06 deg
  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
 Jupiter MOID = 2.25828 au 
 T_jup = 3.497 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.17743464265647E-15 -2.842396061998342E-15 3.535820141689396E-13 8.574799024567018E-15 9.8879250028322E-14 -1.38809117919194E-16
q -2.842396061998342E-15 6.918747995299179E-15 -8.450464489587743E-13 -2.00504248193738E-14 -2.337046622730416E-13 4.357595061678166E-16
tp 3.535820141689396E-13 -8.450464489587743E-13 1.84728792702229E-9 7.435977649369144E-12 4.813247127626558E-10 5.001712174348063E-13
node 8.574799024567018E-15 -2.00504248193738E-14 7.435977649369144E-12 6.430475152193465E-9 -6.417249449315958E-9 5.111045157388037E-12
peri 9.8879250028322E-14 -2.337046622730416E-13 4.813247127626558E-10 -6.417249449315958E-9 6.542285948622961E-9 -4.976053969739058E-12
i -1.38809117919194E-16 4.357595061678166E-16 5.001712174348063E-13 5.111045157388037E-12 -4.976053969739058E-12 1.293706639639008E-11

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-January); 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

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