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JPL Small-Body Database Browser
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172921 (2005 GX138)
Classification: Main-belt Asteroid          SPK-ID: 2172921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1171145341338457 5.2675e-08  
a 3.078372230256013 3.443e-08 au
q 2.717850100619013 1.615e-07 au
i 12.00933969603385 6.3898e-06 deg
node 23.3781713335789 2.9294e-05 deg
peri 259.1588380614797 4.8721e-05 deg
M 228.8811626239296 4.5862e-05 deg
tp 2459719.026375552704
(2022-May-19.52637555)
0.00025848 TDB
period 1972.78667486249
5.40
3.3097e-05
9.061e-08
d
yr
n .1824829843931774 3.0615e-09 deg/d
Q 3.438894359893014 3.8462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1996-10-08  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65771  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:55:55  

Additional Information
 Earth MOID = 1.73495 au 
 Jupiter MOID = 1.78818 au 
 T_jup = 3.185 
[ 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 15.5   n/a MPO245260  

172921 (2005 GX138)          Discovered 2005-Apr-12 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2005 GX138 = 2001 TW140 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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