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215137 (1999 TW171)
Classification: Main-belt Asteroid          SPK-ID: 2215137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2189825545098881 4.8441e-08  
a 2.420200483350676 9.7174e-09 au
q 1.890218799080479 1.1626e-07 au
i 2.119621004651382 5.3744e-06 deg
node 193.118384231079 0.00011138 deg
peri 187.2008710545217 0.00011181 deg
M 175.7587384928931 9.8455e-06 deg
tp 2458329.086811359412
(2018-Jul-29.58681136)
3.5872e-05 TDB
period 1375.230329844371
3.77
8.2825e-06
2.268e-08
d
yr
n .2617743313156421 1.5766e-09 deg/d
Q 2.950182167620873 1.1845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   data-arc span      7507 days (20.55 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:15:47  

Additional Information
 Earth MOID = .892815 au 
 Jupiter MOID = 2.50968 au 
 T_jup = 3.480 
[ 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 16.9   n/a MPO413070  

215137 (1999 TW171)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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