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212202 (2005 GX137)
Classification: Main-belt Asteroid          SPK-ID: 2212202
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1248484350984884 4.0169e-08  
a 2.714754117624004 2.5592e-08 au
q 2.375821314361469 1.1158e-07 au
i 4.294378684403205 5.1994e-06 deg
node 228.9983459880125 5.8618e-05 deg
peri 231.3752902326256 6.281e-05 deg
M 237.0977122402729 2.2868e-05 deg
tp 2459558.265494952861
(2021-Dec-09.76549495)
0.00010431 TDB
period 1633.782265921557
4.47
2.3103e-05
6.325e-08
d
yr
n .22034759925426 3.1158e-09 deg/d
Q 3.053686920886538 2.8787e-08 au
  Orbit Determination Parameters
   # obs. used (total)      395  
   data-arc span      5720 days (15.66 yr)  
   first obs. used      2002-08-16  
   last obs. used      2018-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4778  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:12:24  

Additional Information
 Earth MOID = 1.39552 au 
 Jupiter MOID = 2.10882 au 
 T_jup = 3.346 
[ 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 16.0   n/a MPO437019  
rotation period rot_per 2.84 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

212202 (2005 GX137)          Discovered 2005-Apr-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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