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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 ]

[ 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 .09690831395447477 9.1381e-08  
a 2.678046178004724 1.9447e-08 au
q 2.418521238202061 2.5416e-07 au
i 14.5949642543104 5.1121e-06 deg
node 67.18197188575894 1.9737e-05 deg
peri 106.4354256579446 3.5407e-05 deg
M 332.1386294584151 2.5989e-05 deg
tp 2459124.386930956722
(2020-Oct-01.88693096)
0.00011566 TDB
period 1600.757402721895
4.38
1.7436e-05
4.774e-08
d
yr
n .2248935406376153 2.4497e-09 deg/d
Q 2.937571117807387 2.1332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      7682 days (21.03 yr)  
   first obs. used      1999-05-08  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:12  

Additional Information
 Earth MOID = 1.46576 au 
 Jupiter MOID = 2.14263 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 15.1   n/a MPO381892  

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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