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154218 (2002 JL61)
Classification: Main-belt Asteroid          SPK-ID: 2154218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2671821864345361 4.1573e-08  
a 3.136321943908277 2.621e-08 au
q 2.29835258957225 1.3488e-07 au
i 15.3345995260409 7.6591e-06 deg
node 192.7970123606028 1.829e-05 deg
peri 84.42681168379178 2.3785e-05 deg
M 53.61624220562523 1.8442e-05 deg
tp 2458698.349544346348
(2019-Aug-02.84954435)
0.00010132 TDB
period 2028.753966347581
5.55
2.5431e-05
6.963e-08
d
yr
n .1774488212822166 2.2244e-09 deg/d
Q 3.974291298244305 3.3212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      10290 days (28.17 yr)  
   first obs. used      1991-03-19  
   last obs. used      2019-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62449  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:06:08  

Additional Information
 Earth MOID = 1.34447 au 
 Jupiter MOID = 1.53544 au 
 T_jup = 3.102 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456575.5 (2013-Oct-10.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2666286615984625 4.1336e-08  
q 2.30166035134439 1.3393e-07 au
tp 2456671.349242016249
(2014-Jan-13.84924202)
8.7378e-05 TDB
node 192.8431134486709 1.8276e-05 deg
peri 84.82736932110555 2.3843e-05 deg
i 15.33613175056297 7.6604e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      10290 days (28.17 yr)  
   first obs. used      1991-03-19  
   last obs. used      2019-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62449  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:06:08  

Additional Information
 Jupiter MOID = 1.53544 au 
 T_jup = 3.102 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.708692337214202E-15 -5.481098900073837E-15 -9.607591784419936E-13 -1.174425757002927E-15 -1.912076005853742E-13 1.887193540007241E-15
q -5.481098900073837E-15 1.793594243424781E-14 3.803330901641592E-12 5.469616186350408E-15 7.23145953583642E-13 -5.858329449678182E-15
tp -9.607591784419936E-13 3.803330901641592E-12 7.634907923159425E-9 -5.665239910935545E-12 1.35722401914589E-9 -5.43219970535164E-12
node -1.174425757002927E-15 5.469616186350408E-15 -5.665239910935545E-12 3.340193485374229E-10 -3.227419011704885E-10 3.506418636111936E-11
peri -1.912076005853742E-13 7.23145953583642E-13 1.35722401914589E-9 -3.227419011704885E-10 5.685058681991328E-10 -3.481455891516363E-11
i 1.887193540007241E-15 -5.858329449678182E-15 -5.43219970535164E-12 3.506418636111936E-11 -3.481455891516363E-11 5.868122614354987E-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 14.5   n/a MPO493876  

154218 (2002 JL61)          Discovered 2002-May-08 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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