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101845 (1999 JL74)
Classification: Main-belt Asteroid          SPK-ID: 2101845
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09672958475096929 8.9889e-08  
a 2.677538122207767 1.9242e-08 au
q 2.41854097149172 2.4981e-07 au
i 14.59512996161973 5.1053e-06 deg
node 67.17687193439016 1.9723e-05 deg
peri 106.4289459135812 3.5418e-05 deg
M 17.13081634808435 2.6077e-05 deg
tp 2459124.348672287778
(2020-Oct-01.84867229)		 0.00011585 TDB
period 1600.301901518293
4.38		 1.7251e-05
4.723e-08		 d
yr
n .2249575531082282 2.425e-09 deg/d
Q 2.936535272923814 2.1103e-08 au
   Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      7910 days (21.66 yr)  
   first obs. used      1999-05-08  
   last obs. used      2021-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57297  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:29:55  

Additional Information
 Earth MOID = 1.46518 au 
 Jupiter MOID = 2.14241 au 
 T_jup = 3.325 
[ 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 15.12   n/a E2021B55  

101845 (1999 JL74)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 JL74 = 2001 WS30 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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