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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612045685498115 4.0003e-08  
a 2.673379588498058 9.4427e-09 au
q 2.242418585364356 1.0487e-07 au
i 4.489759242371334 4.2143e-06 deg
node 160.6184607759347 3.9041e-05 deg
peri 39.44823841601714 4.0264e-05 deg
M 191.6720327337977 1.0336e-05 deg
tp 2460143.022921127392
(2023-Jul-17.52292113)
4.7335e-05 TDB
period 1596.575161992239
4.37
8.4589e-06
2.316e-08
d
yr
n .2254826509707095 1.1946e-09 deg/d
Q 3.10434059163176 1.0965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1968  
   data-arc span      16931 days (46.35 yr)  
   first obs. used      1975-03-14  
   last obs. used      2021-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4743  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:39  

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

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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 1.84474883307383 1.84474850001383 1.84474916613393 2.02087045845843 1.77921634811238 2420978.197421831 1.50820004427164 109.947735845173 25.1522532777674 87.5667107054227 2318677.0325071 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47
1999-Jun-15 06:51 < 00:01 Jupiter 1.84270772069654 1.84270738043079 1.8427080609622 1.99698883541158 1.75175358753836 2451344.785401412 0.269817395525916 35.917926804416 25.6720096306845 77.9316997178623 2280496.72025464 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47
2082-Aug-05 22:36 00:01 Jupiter 1.84548013949812 1.84547982245376 1.84548045654237 1.9822264429077 1.73530371141404 2481712.441686744 1.02868094672317 73.3528311116049 25.278732473229 81.4249584946248 2353369.89113025 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47
2117-Feb-02 13:17 00:02 Jupiter 1.99499988050718 1.99499895657872 1.99500080443632 2.58326513570307 2.41331998208115 2494311.053352342 1.54087918210249 90.1623660782098 12.1909237901775 -76.2552347452387 2624217.71923268 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47
2165-Sep-26 21:16 00:02 Jupiter 1.85191962387582 1.85191930379802 1.85191994395392 1.97353552095328 1.72629418625054 2512079.386088422 2.28213173885983 152.260829958359 24.6503179128041 83.4282448091729 2415607.72575827 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47
2200-Mar-28 13:56 00:03 Jupiter 1.96828800751719 1.96828654735702 1.96828946768083 2.50115050568667 2.32273213524462 2524680.080717208 2.80761578097312 165.339353095671 12.1969353584856 -78.5608093773583 2582605.79265612 T 30 CATAB v2.0g-lin.ifort 2021-Aug-25 21:47:47 2021-Aug-25 21:47

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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