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20650 (1999 TG173)
Classification: Main-belt Asteroid          SPK-ID: 2020650
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612045648853876 4.0585e-08  
a 2.673379587856105 9.5128e-09 au
q 2.242418594622285 1.0629e-07 au
i 4.489759704365343 4.2561e-06 deg
node 160.6184589156123 3.9117e-05 deg
peri 39.44824123203021 4.0377e-05 deg
M 191.6720322084012 1.0383e-05 deg
tp 2460143.022923188598
(2023-Jul-17.52292319)
4.7494e-05 TDB
period 1596.575161417166
4.37
8.5217e-06
2.333e-08
d
yr
n .2254826510519265 1.2035e-09 deg/d
Q 3.104340581089926 1.1046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      16748 days (45.85 yr)  
   first obs. used      1975-03-14  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:06  

Additional Information
 Earth MOID = 1.24312 au 
 Jupiter MOID = 1.85206 au 
 T_jup = 3.357 
[ 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 13.87   n/a E2021B10  
diameter diameter 4.516 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.262   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20650 (1999 TG173)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TG173 = 1975 EH3 = 1998 OO11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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