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12759 Joule (1993 TL18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2012759
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07015104467561563 3.9615e-08  
a 3.226031576732769 1.8329e-08 au
q 2.999722091468442 1.2399e-07 au
i 4.813603844557427 4.0345e-06 deg
node 40.30085446062284 4.909e-05 deg
peri 113.4458735358654 5.6312e-05 deg
M 127.4288712114575 2.7947e-05 deg
tp 2458451.353623658256
(2018-Nov-28.85362366)
0.00016397 TDB
period 2116.417519193868
5.79
1.8037e-05
4.938e-08
d
yr
n .1700987620519802 1.4497e-09 deg/d
Q 3.452341061997097 1.9615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1756  
   data-arc span      12017 days (32.90 yr)  
   first obs. used      1987-09-24  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:33:08  

Additional Information
 Earth MOID = 2.01361 au 
 Jupiter MOID = 1.53765 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456645.5 (2013-Dec-19.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07118074425702878 3.9391e-08  
q 2.990384646269843 1.2393e-07 au
tp 2456324.562416207369
(2013-Feb-01.06241621)
0.0001628 TDB
node 40.40835559612469 4.8996e-05 deg
peri 110.4320386427866 5.6163e-05 deg
i 4.821088453682249 4.0398e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1756  
   data-arc span      12017 days (32.90 yr)  
   first obs. used      1987-09-24  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:33:08  

Additional Information
 Jupiter MOID = 1.53765 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.551656159295586E-15 -4.835283195709708E-15 8.821397322574667E-13 -4.541414973913098E-15 1.367069090406026E-13 5.518795234885407E-16
q -4.835283195709708E-15 1.53596240251607E-14 -3.007570658499041E-12 1.280848578311151E-14 -4.642635933342046E-13 -2.001131332296067E-15
tp 8.821397322574667E-13 -3.007570658499041E-12 2.650499479868513E-8 -2.460310897842629E-12 4.495820861863062E-9 -1.836351876589533E-12
node -4.541414973913098E-15 1.280848578311151E-14 -2.460310897842629E-12 2.400565965261415E-9 -2.392358706714767E-9 -2.737166860671987E-11
peri 1.367069090406026E-13 -4.642635933342046E-13 4.495820861863062E-9 -2.392358706714767E-9 3.154317610675209E-9 2.692762881082478E-11
i 5.518795234885407E-16 -2.001131332296067E-15 -1.836351876589533E-12 -2.737166860671987E-11 2.692762881082478E-11 1.631994970888904E-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 13.01   n/a E2021B10  
diameter diameter 12.882 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12759 Joule           Discovered 1993 Oct. 9 by E. W. Elst at the European Southern Observatory.
James Joule (1818-1889) was an English physicist who attempted to demonstrate the unity of forces in nature. In 1840 he determined the mechanical equivalent of heat and showed that heat is produced by motion.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

[ show close-approach data ]
Alternate Designations
 1993 TL18 = 1987 SP28 = 1990 FH4 = 1996 FD12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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