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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2568232284293548 5.1182e-08  
a 2.272293097910234 1.2006e-08 au
q 1.688715448567188 1.1955e-07 au
i 3.922269462122559 5.393e-06 deg
node 103.1705156731273 7.5829e-05 deg
peri 257.8585493625939 7.6741e-05 deg
M 82.87513544226935 1.0735e-05 deg
tp 2458912.483942513914
(2020-Mar-03.98394251)
3.6165e-05 TDB
period 1251.108431276331
3.43
9.9159e-06
2.715e-08
d
yr
n .2877448436925186 2.2806e-09 deg/d
Q 2.85587074725328 1.509e-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 = .689485 au 
 Jupiter MOID = 2.60498 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

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