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212161 (2005 GW12)
Classification: Main-belt Asteroid          SPK-ID: 2212161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3535018780651769 4.9984e-08  
a 2.755211211101584 2.1293e-08 au
q 1.781238873510943 1.4552e-07 au
i 16.62733935192023 6.92e-06 deg
node 43.89338493809232 1.6513e-05 deg
peri 275.6815608162772 1.9232e-05 deg
M 34.73062126627183 1.0591e-05 deg
tp 2458839.346098695621
(2019-Dec-21.84609870)
4.8522e-05 TDB
period 1670.439581969626
4.57
1.9364e-05
5.302e-08
d
yr
n .2155121345816781 2.4983e-09 deg/d
Q 3.729183548692224 2.882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      5531 days (15.14 yr)  
   first obs. used      2004-03-18  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54053  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:20:09  

Additional Information
 Earth MOID = .860038 au 
 Jupiter MOID = 2.0275 au 
 T_jup = 3.193 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO494172  

212161 (2005 GW12)          Discovered 2005-Apr-01 by LONEOS at Anderson Mesa
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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