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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735691239249376 4.2807e-08  
a 2.588041700058714 1.0346e-08 au
q 2.138837569498317 1.0747e-07 au
i 13.71540963458718 2.5993e-06 deg
node 307.93628398669 2.2479e-05 deg
peri 10.83475334241593 2.776e-05 deg
M 70.95448224112562 1.7506e-05 deg
tp 2458900.768307577602
(2020-Feb-21.26830758)
7.3425e-05 TDB
period 1520.741267695725
4.16
9.1191e-06
2.497e-08
d
yr
n .236726659325477 1.4195e-09 deg/d
Q 3.03724583061911 1.2142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      10298 days (28.19 yr)  
   first obs. used      1992-12-02  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:55  

Additional Information
 Earth MOID = 1.12469 au 
 Jupiter MOID = 2.26755 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 14.91   n/a E2021B10  
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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