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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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1916-Apr-24 16:44 00:02 Jupiter 1.84474881060411 1.84474844877506 1.84474917243305 2.02087027428495 1.7792161343554 2420978.197229709 1.72451895783116 125.066757469232 29.7739006050032 85.408802117472 2021360.97648745 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54
1999-Jun-15 06:51 < 00:01 Jupiter 1.84270771551753 1.84270734966279 1.84270808137205 1.99698850738773 1.75175321140601 2451344.785460822 0.278412356281534 47.2262138097353 29.0157699466163 68.2138669663447 2003623.43566223 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54
2082-Aug-05 22:36 00:01 Jupiter 1.8454801130282 1.84547974846051 1.84548047759578 1.98222620580657 1.73530343532018 2481712.441375911 1.27888051881148 96.232959960094 31.091618506676 82.9144095626432 2013549.82178392 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54
2117-Feb-02 13:16 00:02 Jupiter 1.99500013566979 1.99499902493215 1.99500124640878 2.58326590537284 2.41332082748038 2494311.052967150 1.8959826488056 114.900300608121 14.9643615283819 -76.4934782456954 2402864.68074726 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54
2165-Sep-26 21:16 00:03 Jupiter 1.85191957879004 1.85191915906705 1.85191999851483 1.97353524691561 1.72629386505107 2512079.385877331 2.75973802896229 188.053078678864 30.7242623530784 84.4449633859253 2029330.92696496 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54
2200-Mar-28 13:56 00:03 Jupiter 1.96828799184377 1.96828625151601 1.968289732177 2.50115024198345 2.32273184878649 2524680.080670358 3.39140725903251 203.200219576775 15.0554756489604 -78.6124849361189 2379068.21190175 T 22 CATAB v2.0e-lin.ifort 2019-May-30 02:54:24 2019-May-30 02:54

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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