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66780 (1999 TW223)
Classification: Main-belt Asteroid          SPK-ID: 2066780
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736346945650252 7.5502e-08  
a 2.587955721148287 2.2115e-08 au
q 2.138596819958895 1.9138e-07 au
i 13.715371018031 7.073e-06 deg
node 307.9360004046196 2.4229e-05 deg
peri 10.80105717113479 3.3608e-05 deg
M 23.63001534889003 3.2312e-05 deg
tp 2458900.685142284828
(2020-Feb-21.18514228)
0.00013545 TDB
period 1520.665486116578
4.16
1.9492e-05
5.337e-08
d
yr
n .2367384564762861 3.0345e-09 deg/d
Q 3.037314622337679 2.5955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      619  
   data-arc span      9625 days (26.35 yr)  
   first obs. used      1992-12-02  
   last obs. used      2019-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58059  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:24:15  

Additional Information
 Earth MOID = 1.12642 au 
 Jupiter MOID = 2.26753 au 
 T_jup = 3.360 
[ 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 14.8   n/a MPO395617  
diameter diameter 3.225 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66780 (1999 TW223)          Discovered 1999-Oct-03 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW223 = 1999 RW237 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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