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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606394553481562 4.4194e-08  
a 2.675350255001268 1.1496e-08 au
q 2.245583447172314 1.1835e-07 au
i 4.487635664337208 4.6985e-06 deg
node 160.617969610939 5.6085e-05 deg
peri 39.67505825574955 5.7497e-05 deg
M 102.168865608862 1.1978e-05 deg
tp 2458546.887024550013
(2019-Mar-04.38702455)
5.2942e-05 TDB
period 1598.340846683832
4.38
1.0302e-05
2.821e-08
d
yr
n .2252335606306454 1.4517e-09 deg/d
Q 3.105117062830223 1.3342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1418  
   data-arc span      16129 days (44.16 yr)  
   first obs. used      1975-03-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50667  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:54:19  

Additional Information
 Earth MOID = 1.24551 au 
 Jupiter MOID = 1.8535 au 
 T_jup = 3.356 
[ 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 13.9   n/a MPO474037  
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

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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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