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469303 (1998 TH20)
Classification: Main-belt Asteroid          SPK-ID: 2469303
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07289239179710238 7.5572e-08  
a 2.786657662383809 4.3948e-08 au
q 2.583531520252931 2.1625e-07 au
i 14.83475451568004 8.9328e-06 deg
node 30.41503707695253 2.4923e-05 deg
peri 209.0939535913446 6.9766e-05 deg
M 23.62003390250231 5.9956e-05 deg
tp 2458889.018739164417
(2020-Feb-09.51873916)
0.0002829 TDB
period 1699.119233548519
4.65
4.0195e-05
1.1e-07
d
yr
n .2118744776069419 5.0122e-09 deg/d
Q 2.989783804514687 4.7152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      7501 days (20.54 yr)  
   first obs. used      1998-10-13  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57876  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 13:56:56  

Additional Information
 Earth MOID = 1.58202 au 
 Jupiter MOID = 2.00646 au 
 T_jup = 3.278 
[ 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 16.2   n/a MPO472611  

469303 (1998 TH20)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

Alternate Designations
 1998 TH20 = 2015 LS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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