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216920 (1996 GW9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2216920
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1197872793049097 6.9985e-08  
a 3.229192581472515 4.1369e-08 au
q 2.842376387786324 2.3901e-07 au
i 5.084568863490685 8.7721e-06 deg
node 187.1491302262212 6.0865e-05 deg
peri 41.01419406298736 6.7775e-05 deg
M 68.59355845230577 3.3071e-05 deg
tp 2458796.649914897900
(2019-Nov-09.14991490)
0.00019143 TDB
period 2119.528916667085
5.80
4.073e-05
1.115e-07
d
yr
n .1698490627653679 3.2639e-09 deg/d
Q 3.616008775158706 4.6325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      226  
   data-arc span      8453 days (23.14 yr)  
   first obs. used      1996-04-13  
   last obs. used      2019-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58712  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:48  

Additional Information
 Earth MOID = 1.8341 au 
 Jupiter MOID = 1.36994 au 
 T_jup = 3.169 
[ 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 16.12   n/a MPCxxxxx  

216920 (1996 GW9)          Discovered 1996-Apr-13 by Spacewatch at Kitt Peak
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

[ show close-approach data ]
Alternate Designations
 1996 GW9 = 2004 TV154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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