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216946 (1999 TN236)
Classification: Main-belt Asteroid          SPK-ID: 2216946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2569046372449516 5.1189e-08  
a 2.272348331422985 1.2042e-08 au
q 1.688571507644592 1.1959e-07 au
i 3.922130440851498 5.3927e-06 deg
node 103.1690005000347 7.5837e-05 deg
peri 257.8728991760541 7.6748e-05 deg
M 139.246020482611 1.0971e-05 deg
tp 2458912.560493778678
(2020-Mar-04.06049378)
3.6153e-05 TDB
period 1251.154048322928
3.43
9.9451e-06
2.723e-08
d
yr
n .2877343525224182 2.2871e-09 deg/d
Q 2.856125155201378 1.5135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7800 days (21.36 yr)  
   first obs. used      1999-10-03  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:54  

Additional Information
 Earth MOID = .690139 au 
 Jupiter MOID = 2.60527 au 
 T_jup = 3.564 
[ 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 17.68   n/a MPCxxxxx  

216946 (1999 TN236)          Discovered 1999-Oct-03 by CSS at Catalina
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

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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
1928-Dec-09 10:30 00:05 Hebe 0.0446170762538622 0.0445971196952633 0.0446370397464122 3.4860910090664 3.48609096909791 2425589.937281259 4.84152551708068 1326.61410773349 60.2743577756622 -41.4914880031488 73399.0013842914 T 10 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:55 2021-Apr-13 23:56
2185-Oct-06 12:35 00:08 Hebe 0.0271271730987817 0.027111863851631 0.0271425760953727 3.5145307273377 3.51453066213199 2519394.024588114 8.06363106355377 2637.84879588415 73.77043511332 -73.2127715044753 52624.2595063444 T 10 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:55 2021-Apr-13 23:56

Alternate Designations
 1999 TN236 = 2004 CW119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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