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181952 (1999 TL231)
Classification: Main-belt Asteroid          SPK-ID: 2181952
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2092451882788485 4.4477e-08  
a 2.238139954032921 1.0157e-08 au
q 1.769819937956889 9.6292e-08 au
i 10.1066048851413 5.3654e-06 deg
node 158.5515703640571 2.0543e-05 deg
peri 149.5212592491638 2.3656e-05 deg
M 162.6843850315925 1.1194e-05 deg
tp 2458647.821390594959
(2019-Jun-13.32139059)
3.7038e-05 TDB
period 1223.007969370735
3.35
8.3251e-06
2.279e-08
d
yr
n .2943562176338295 2.0037e-09 deg/d
Q 2.706459970108952 1.2282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      440  
   data-arc span      8354 days (22.87 yr)  
   first obs. used      1998-04-03  
   last obs. used      2021-02-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:44  

Additional Information
 Earth MOID = .761814 au 
 Jupiter MOID = 2.6011 au 
 T_jup = 3.588 
[ 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 16.58   n/a MPCxxxxx  

181952 (1999 TL231)          Discovered 1999-Oct-05 by CSS at Catalina
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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