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385289 (2001 TH99)
Classification: Main-belt Asteroid          SPK-ID: 2385289
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2656198984369278 6.9554e-08  
a 3.14026603699361 3.2858e-08 au
q 2.306148891182434 2.1395e-07 au
i 16.05389190992707 1.0301e-05 deg
node 9.242421561802045 2.8273e-05 deg
peri 48.47952533069496 3.4769e-05 deg
M 136.6963113598716 1.8516e-05 deg
tp 2458428.704245955724
(2018-Nov-06.20424596)
9.9977e-05 TDB
period 2032.582069639543
5.56
3.1902e-05
8.734e-08
d
yr
n .1771146195655668 2.7799e-09 deg/d
Q 3.974383182804787 4.1586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      154  
   data-arc span      6796 days (18.61 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63122  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:50  

Additional Information
 Earth MOID = 1.34819 au 
 Jupiter MOID = 1.69943 au 
 T_jup = 3.096 
[ show covariance matrix ]

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 16.17   n/a E2021B25  

385289 (2001 TH99)          Discovered 2001-Sep-19 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-02-19

[ show close-approach data ]
Alternate Designations
 2001 TH99 = 2012 UX18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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