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66378 (1999 JL122)
Classification: Main-belt Asteroid          SPK-ID: 2066378
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04104141632800072 3.5841e-08  
a 2.208094392196827 6.8875e-09 au
q 2.117471070955153 7.9568e-08 au
i 3.288092571215512 3.5038e-06 deg
node 38.44056290921677 6.5174e-05 deg
peri 111.6694924173573 7.6904e-05 deg
M 299.1208490163148 4.0811e-05 deg
tp 2459403.170699043742
(2021-Jul-07.67069904)
0.00013596 TDB
period 1198.463685462692
3.28
5.6073e-06
1.535e-08
d
yr
n .3003845709859906 1.4054e-09 deg/d
Q 2.2987177134385 7.1701e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1999-05-13  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:21:44  

Additional Information
 Earth MOID = 1.1297 au 
 Jupiter MOID = 2.67377 au 
 T_jup = 3.656 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO337767  

66378 (1999 JL122)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JL122 = 1999 LJ17 = 2000 SL154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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