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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2185640964791808 5.9883e-08  
a 2.4377216247495 1.439e-08 au
q 1.904923200368365 1.474e-07 au
i 2.434209391282617 6.6602e-06 deg
node 4.410943516168287 0.00014862 deg
peri 354.1688842999954 0.00014923 deg
M 212.754147349591 1.4384e-05 deg
tp 2459769.110875854117
(2022-Jul-08.61087585)
5.7913e-05 TDB
period 1390.191381440673
3.81
1.231e-05
3.37e-08
d
yr
n .2589571513721567 2.293e-09 deg/d
Q 2.970520049130636 1.7535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7830 days (21.44 yr)  
   first obs. used      1999-10-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:32:12  

Additional Information
 Earth MOID = .899621 au 
 Jupiter MOID = 2.48025 au 
 T_jup = 3.469 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457394.5 (2016-Jan-07.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2184262206204804 6.0549e-08  
q 1.90573709543595 1.4922e-07 au
tp 2456984.822562698705
(2014-Nov-23.32256270)
4.9819e-05 TDB
node 4.463021915957514 0.0001483 deg
peri 353.5984921349731 0.00014891 deg
i 2.439284622676872 6.6721e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7830 days (21.44 yr)  
   first obs. used      1999-10-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:32:12  

Additional Information
 Jupiter MOID = 2.48025 au 
 T_jup = 3.469 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.66617255141155E-15 -9.009930763035007E-15 -1.881723239385203E-12 -3.422670943914442E-14 -4.981737201072894E-13 -2.888890509717595E-15
q -9.009930763035007E-15 2.22677104568307E-14 4.659059443427931E-12 7.660983866904454E-14 1.248113198874434E-12 7.48923862057211E-15
tp -1.881723239385203E-12 4.659059443427931E-12 2.481904596159891E-9 2.634911546950714E-11 7.185808607027602E-10 2.167771210281923E-12
node -3.422670943914442E-14 7.660983866904454E-14 2.634911546950714E-11 2.199348847783E-8 -2.196546612536154E-8 -6.290655265682523E-10
peri -4.981737201072894E-13 1.248113198874434E-12 7.185808607027602E-10 -2.196546612536154E-8 2.217466315098775E-8 6.291394807228871E-10
i -2.888890509717595E-15 7.48923862057211E-15 2.167771210281923E-12 -6.290655265682523E-10 6.291394807228871E-10 4.451681866194903E-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

[ 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
2170-Feb-03 08:31 01:52 Thisb 0.0164674643593848 0.0162179489906473 0.0167170600281386 2.55538890746175 2.55538874543339 2513669.854891059 112.124008437834 12557.4286927359 110.004791597155 8.26782518552292 3220.79293017228 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 06:32:13 2021-Apr-14 06:32

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