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7007 Timjull (1981 EK34)
Classification: Main-belt Asteroid          SPK-ID: 2007007
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549910288855863 3.1883e-08  
a 2.401511274620665 8.4661e-09 au
q 2.029298571286872 7.4093e-08 au
i .7265517110905632 4.4169e-06 deg
node 349.2073020626141 0.00027048 deg
peri 264.0811233681974 0.00027091 deg
M 131.4775617046936 1.5607e-05 deg
tp 2458504.051146227823
(2019-Jan-20.55114623)
5.8393e-05 TDB
period 1359.331471018629
3.72
7.1881e-06
1.968e-08
d
yr
n .2648360666072347 1.4004e-09 deg/d
Q 2.773723977954457 9.7782e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1432  
   data-arc span      15443 days (42.28 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53157  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:31:23  

Additional Information
 Earth MOID = 1.0149 au 
 Jupiter MOID = 2.2673 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456905.5 (2014-Sep-05.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544851329788078 3.1882e-08  
q 2.030767792966317 7.4033e-08 au
tp 2457144.953608305384
(2015-May-02.45360831)
5.776e-05 TDB
node 349.3061037925341 0.00027029 deg
peri 264.1322114999566 0.00027072 deg
i .7271078552170932 4.4162e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1432  
   data-arc span      15443 days (42.28 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53157  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:31:23  

Additional Information
 Jupiter MOID = 2.2673 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.016475145565294E-15 -2.35084052972197E-15 4.507619535343867E-13 -1.52787231032037E-15 1.043195866040002E-13 -4.607687433669364E-17
q -2.35084052972197E-15 5.4808999444033E-15 -1.059346727957574E-12 3.952174050288921E-15 -2.480873528606891E-13 7.232539221354546E-17
tp 4.507619535343867E-13 -1.059346727957574E-12 3.336170174925348E-9 -8.715985763787564E-12 8.912708788030218E-10 -2.497234896397364E-14
node -1.52787231032037E-15 3.952174050288921E-15 -8.715985763787564E-12 7.305572939738925E-8 -7.305152012429297E-8 -2.812470780983494E-10
peri 1.043195866040002E-13 -2.480873528606891E-13 8.912708788030218E-10 -7.305152012429297E-8 7.328841986404224E-8 2.812127188427031E-10
i -4.607687433669364E-17 7.232539221354546E-17 -2.497234896397364E-14 -2.812470780983494E-10 2.812127188427031E-10 1.950318525124988E-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 15.0   n/a MPO279588  
rotation period rot_per 3.551 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

7007 Timjull           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
A. J. Timothy Jull (b. 1951) is a senior research scientist at the University of Arizona. In addition to running a world-class laboratory for the measurement of terrestrial ages of meteorites, he is the editor of the journal Meteoritics and Planetary Science.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

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