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385211 (1999 TG212)
Classification: Main-belt Asteroid          SPK-ID: 2385211
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2645863196039099 8.1801e-08  
a 2.740506028006709 2.4331e-08 au
q 2.015405624204084 2.3258e-07 au
i 3.433235408686608 1.2256e-05 deg
node 341.2252063582229 0.00011516 deg
peri 69.52215394193438 0.00012096 deg
M 268.6954882608951 2.9463e-05 deg
tp 2459816.775725960098
(2022-Aug-25.27572596)
0.00013947 TDB
period 1657.084173211073
4.54
2.2068e-05
6.042e-08
d
yr
n .2172490726903736 2.8932e-09 deg/d
Q 3.465606431809334 3.0769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      7939 days (21.74 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:32:33  

Additional Information
 Earth MOID = 1.02859 au 
 Jupiter MOID = 1.95072 au 
 T_jup = 3.296 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457377.5 (2015-Dec-21.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2657231875400453 8.1033e-08  
q 2.010177673744252 2.293e-07 au
tp 2458162.956646873600
(2018-Feb-13.45664687)
0.00012605 TDB
node 341.2585596163565 0.00011527 deg
peri 69.87537259640469 0.00012105 deg
i 3.433385795985058 1.2256e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      7939 days (21.74 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:32:33  

Additional Information
 Jupiter MOID = 1.95072 au 
 T_jup = 3.296 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.566342012873265E-15 -1.853761277874636E-14 -4.977726505546708E-12 1.107783469864214E-13 -1.115987760053963E-12 -1.464127424091562E-14
q -1.853761277874636E-14 5.257824213229519E-14 1.468580078419556E-11 -3.158205412962341E-13 3.297224905266306E-12 4.301182186931104E-14
tp -4.977726505546708E-12 1.468580078419556E-11 1.588846479719565E-8 -2.567501734676938E-10 4.638908001768155E-9 2.133034998950085E-11
node 1.107783469864214E-13 -3.158205412962341E-13 -2.567501734676938E-10 1.328776080184535E-8 -1.333213408575665E-8 5.673320870354384E-10
peri -1.115987760053963E-12 3.297224905266306E-12 4.638908001768155E-9 -1.333213408575665E-8 1.465355786059691E-8 -5.612903455609276E-10
i -1.464127424091562E-14 4.301182186931104E-14 2.133034998950085E-11 5.673320870354384E-10 -5.612903455609276E-10 1.502163160278144E-10

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 17.38   n/a MPO639049  

385211 (1999 TG212)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: Last Updated: 2014-02-19

[ 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
1911-Jun-10 01:03 00:04 Jupiter 1.97867240620432 1.97867084971796 1.97867396268843 1.21433382495677 0.786418649686266 2419197.544042287 4.38031555897775 1126.8168257077 403.388114056153 -16.2580649959773 584520.843198146 T 12 CATAB v2.0g-lin.ifort 2021-Aug-25 20:32:33 2021-Aug-25 20:32
2006-Dec-25 19:05 < 00:01 Jupiter 1.9450976100268 1.94509686463733 1.94509835541328 1.17329430323208 0.711118081077576 2454095.294859794 0.902394971552057 808.355235479624 307.60989219869 -0.965586428091304 911564.165938316 T 12 CATAB v2.0g-lin.ifort 2021-Aug-25 20:32:33 2021-Aug-25 20:32
2065-Aug-23 22:04 00:02 Jupiter 1.99335268956571 1.99335177852767 1.99335360060262 1.24690962697888 0.839604971365748 2475521.419631163 1.8019122980876 571.328111003701 326.742006574352 -22.6573590393185 895379.53262141 T 12 CATAB v2.0g-lin.ifort 2021-Aug-25 20:32:33 2021-Aug-25 20:32
2102-Jul-13 16:52 00:03 Jupiter 1.98339645373173 1.98339526149741 1.98339764596289 1.55904725309042 1.2555935538674 2488993.202553340 3.17877957333128 297.283136544167 127.98217290117 31.405249121142 714851.423205924 T 12 CATAB v2.0g-lin.ifort 2021-Aug-25 20:32:33 2021-Aug-25 20:32
2161-Mar-11 05:18 00:05 Jupiter 1.93823228623794 1.93823155275528 1.93823301971939 1.15608670154725 0.680088951067701 2510418.721096207 5.41120038957102 1255.1098964854 371.792199710985 -7.627720411412 750171.586735658 T 12 CATAB v2.0g-lin.ifort 2021-Aug-25 20:32:33 2021-Aug-25 20:32

Alternate Designations
 1999 TG212 = 2008 SF159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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