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312997 (1999 TG245)
Classification: Main-belt Asteroid          SPK-ID: 2312997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2183564468458503 6.2322e-08  
a 2.438136221951838 1.4504e-08 au
q 1.905753459600269 1.5295e-07 au
i 2.433943739563803 6.9458e-06 deg
node 4.411222073776171 0.00015626 deg
peri 354.1632884496779 0.00015689 deg
M 160.9751809267497 1.463e-05 deg
tp 2458378.712770844248
(2018-Sep-17.21277084)
5.4733e-05 TDB
period 1390.546053170325
3.81
1.2408e-05
3.397e-08
d
yr
n .2588911019374231 2.3102e-09 deg/d
Q 2.970518984303407 1.7671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      7420 days (20.31 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:49:24  

Additional Information
 Earth MOID = .902105 au 
 Jupiter MOID = 2.47938 au 
 T_jup = 3.469 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457324.5 (2015-Oct-29.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2184952500267337 6.3094e-08  
q 1.905341334178962 1.5505e-07 au
tp 2456984.783022727338
(2014-Nov-23.28302273)
5.2128e-05 TDB
node 4.462654672952703 0.00015592 deg
peri 353.5686027237309 0.00015655 deg
i 2.439293145406899 6.9597e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      7420 days (20.31 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:49:24  

Additional Information
 Jupiter MOID = 2.47938 au 
 T_jup = 3.469 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.98090879895027E-15 -9.757149750568524E-15 -2.154655444930809E-12 -3.997126966437421E-14 -5.813423141686961E-13 -3.103831473514912E-15
q -9.757149750568524E-15 2.404181535386784E-14 5.304897659916641E-12 8.913703435908286E-14 1.445871740614393E-12 8.04200265359932E-15
tp -2.154655444930809E-12 5.304897659916641E-12 2.717325416286478E-9 3.09458198091909E-11 7.906822628673428E-10 2.368806838176942E-12
node -3.997126966437421E-14 8.913703435908286E-14 3.09458198091909E-11 2.430990841102262E-8 -2.427826975889271E-8 -7.24338022435501E-10
peri -5.813423141686961E-13 1.445871740614393E-12 7.906822628673428E-10 -2.427826975889271E-8 2.450881578878912E-8 7.243902598418153E-10
i -3.103831473514912E-15 8.04200265359932E-15 2.368806838176942E-12 -7.24338022435501E-10 7.243902598418153E-10 4.84376780415663E-11

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 17.3   n/a MPO460291  

312997 (1999 TG245)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1999 TG245 = 2003 VY9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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