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JPL Small-Body Database Browser
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447821 (2007 TW261)
Classification: Main-belt Asteroid          SPK-ID: 2447821
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .216079782852255 4.1515e-07  
a 2.574544145715029 7.9663e-08 au
q 2.018237205765381 1.1268e-06 au
i 15.25774485212248 2.0029e-05 deg
node 34.82519144894137 3.4885e-05 deg
peri 334.1812307570701 0.00010061 deg
M 38.6409686847179 5.5187e-05 deg
tp 2458838.544968141173
(2019-Dec-21.04496814)
0.00023149 TDB
period 1508.859986013656
4.13
7.0032e-05
1.917e-07
d
yr
n .2385907263344591 1.1074e-08 deg/d
Q 3.130851085664677 9.6877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      3004 days (8.22 yr)  
   first obs. used      2007-10-10  
   last obs. used      2015-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47346  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 11:35:42  

Additional Information
 Earth MOID = 1.02958 au 
 Jupiter MOID = 2.35175 au 
 T_jup = 3.346 
[ 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 17.9   n/a MPO361042  

447821 (2007 TW261)          Discovered 2007-Oct-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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