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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549910289112491 3.1881e-08  
a 2.401511274639824 8.4526e-09 au
q 2.029298571241433 7.4092e-08 au
i .7265514747061258 4.3904e-06 deg
node 349.2073072110337 0.00027028 deg
peri 264.0811181387076 0.0002707 deg
M 131.4775617714214 1.5557e-05 deg
tp 2458504.051145969923
(2019-Jan-20.55114597)
5.8191e-05 TDB
period 1359.331471034897
3.72
7.1767e-06
1.965e-08
d
yr
n .2648360666040653 1.3982e-09 deg/d
Q 2.773723978038216 9.7627e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      15466 days (42.34 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53109  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:29:18  

Additional Information
 Earth MOID = 1.0149 au 
 Jupiter MOID = 2.2673 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456915.5 (2014-Sep-15.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544840383434261 3.1881e-08  
q 2.030743876772444 7.4037e-08 au
tp 2457144.966190848411
(2015-May-02.46619085)
5.7517e-05 TDB
node 349.306118401141 0.00027008 deg
peri 264.1370672891348 0.00027051 deg
i .7271089714472817 4.3898e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      15466 days (42.34 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53109  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:29:18  

Additional Information
 Jupiter MOID = 2.2673 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.016371641883958E-15 -2.350872220728054E-15 4.525458266208939E-13 -1.614140557712078E-15 1.049525736879425E-13 -4.215566049309597E-17
q -2.350872220728054E-15 5.481450172130645E-15 -1.06159635171218E-12 4.145560707376997E-15 -2.489577120238537E-13 6.364089932362412E-17
tp 4.525458266208939E-13 -1.06159635171218E-12 3.308193957119849E-9 -8.777128616303047E-12 8.828639347122195E-10 -2.216669518114247E-14
node -1.614140557712078E-15 4.145560707376997E-15 -8.777128616303047E-12 7.294324085133351E-8 -7.293905861841206E-8 -2.761259138392003E-10
peri 1.049525736879425E-13 -2.489577120238537E-13 8.828639347122195E-10 -7.293905861841206E-8 7.317341991859459E-8 2.760927890959447E-10
i -4.215566049309597E-17 6.364089932362412E-17 -2.216669518114247E-14 -2.761259138392003E-10 2.760927890959447E-10 1.927037221612049E-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. 2020-October); 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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