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(2018 TF2)
Classification: Apollo [NEO]          SPK-ID: 3831219
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4201984402465055 0.00053131  
a 1.703649209312507 0.0015654 au
q .9877784688321991 2.8468e-06 au
i 16.23036808605373 0.013492 deg
node 13.28390809522973 0.00027017 deg
peri 26.98948739963888 0.0061042 deg
M 256.833585740625 0.34995 deg
tp 2459233.257951455799
(2021-Jan-18.75795146)
1.1104 TDB
period 812.2106707462033
2.22
1.1195
0.003065
d
yr
n .4432347578852378 0.0006109 deg/d
Q 2.419519949792815 0.0022232 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      3 days  
   first obs. used      2018-10-06  
   last obs. used      2018-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .63649  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-10 06:26:06  

Additional Information
 Earth MOID = .0199242 au 
 Jupiter MOID = 3.05864 au 
 T_jup = 4.051 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458398.5 (2018-Oct-07.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4212006321556879 0.00052967  
q .9872949986877357 3.9948e-06 au
tp 2458421.200656563082
(2018-Oct-29.70065656)
0.0087572 TDB
node 13.31395688913825 0.00013673 deg
peri 26.89731767959692 0.0057013 deg
i 16.25459112093329 0.013437 deg
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      3 days  
   first obs. used      2018-10-06  
   last obs. used      2018-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .63649  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-10 06:26:06  

Additional Information
 Jupiter MOID = 3.05864 au 
 T_jup = 4.051 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.805490244336275E-7 1.971257220922112E-9 -4.629732774460941E-6 7.238366549909292E-8 -2.999767899411399E-6 7.117175513769894E-6
q 1.971257220922112E-9 1.595830437682107E-11 -3.330627523812683E-8 5.047239231965697E-10 -2.202748856855596E-8 5.004228578016518E-8
tp -4.629732774460941E-6 -3.330627523812683E-8 7.668868226069027E-5 -1.193055125227616E-6 4.985458375270176E-5 -.0001174614344672828
node 7.238366549909292E-8 5.047239231965697E-10 -1.193055125227616E-6 1.86950804470537E-8 -7.722025978615655E-7 1.836211972385733E-6
peri -2.999767899411399E-6 -2.202748856855596E-8 4.985458375270176E-5 -7.722025978615655E-7 3.250484422915245E-5 -7.611386490906159E-5
i 7.117175513769894E-6 5.004228578016518E-8 -.0001174614344672828 1.836211972385733E-6 -7.611386490906159E-5 .0001805605317528443

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.6   .24301 MPO458802 autocmod 2.6n

[ 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
1900-Sep-19 23:29 1_18:43 Earth 0.207251895505973 0.1784131178586 0.236090543531008 14.8190003057593 14.8181327295155 2415282.478217417 2562.92797884228 1438046.78196122 108.772350137115 -0.254844261884713 1098.54191700062 T 2 CATAB v2.0e-lin.ifort 2018-Oct-10 06:26:09 2018-Dec-11 17:23
2018-Oct-07 20:33 < 00:01 Earth 0.0191659720691651 0.0191100169884851 0.0192219264180443 11.1466878225216 11.1342088497559 2458399.356517165 0.164271034254521 2783.97165539253 18.0005091142947 -0.159477499746291 683.713518266057 T 2 CATAB v2.0e-lin.ifort 2018-Oct-10 06:26:09 2018-Dec-11 17:23
2067-Sep-14 02:33 2_10:35 Earth 0.312829584845991 0.272520105035017 0.353139062112317 17.4627371120371 17.4622493609034 2476272.606293857 3514.72014276404 2010070.22626498 150.738389729186 0.404119643301486 1891.59651531438 T 2 CATAB v2.0e-lin.ifort 2018-Oct-10 06:26:09 2018-Dec-11 17:23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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