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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 ]

[ show orbit diagram ]
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

[ hide close-approach data ]
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 1.84474884476806 1.84474850643068 1.84474918310555 2.02087055575237 1.77921646025675 2420978.197434556 1.51593524145747 110.565689152214 25.3075034692522 87.6926459187514 2297009.23266761 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26
1999-Jun-15 06:51 < 00:01 Jupiter 1.84270773301926 1.84270738729017 1.84270807874814 1.99698892441016 1.75175369075097 2451344.785402613 0.269853588231612 36.0331099869073 25.8807512395658 78.69667075471 2255585.74344243 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26
2082-Aug-05 22:36 00:01 Jupiter 1.84548015000755 1.84547982902754 1.84548047098747 1.98222652465555 1.73530380630029 2481712.441674632 1.03891329759352 74.0353753119966 25.4049722574876 81.3359080038949 2332799.18559754 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26
2117-Feb-02 13:17 00:02 Jupiter 1.99499991290901 1.99499897302422 1.99500085279448 2.58326528728498 2.41332014719475 2494311.053328826 1.55402593707074 90.8034441314091 12.2888697831045 -76.1485237843516 2577122.04523756 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26
2165-Sep-26 21:16 00:02 Jupiter 1.85191963073071 1.85191930917083 1.85191995229081 1.97353560268576 1.72629428066952 2512079.386047971 2.30103321259085 153.522767006483 24.7596605785462 83.3592151476509 2397292.60524461 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26
2200-Mar-28 13:56 00:03 Jupiter 1.96828805300465 1.96828657348356 1.96828953252933 2.50115071013645 2.32273235968065 2524680.080672719 2.82961420243957 166.523852861579 12.2681898958627 -78.5191114337741 2539105.26476709 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:26:13 2021-Apr-13 03:26

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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