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JPL Small-Body Database Browser
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172927 (2005 GK157)
Classification: Main-belt Asteroid          SPK-ID: 2172927
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 .07912573161482775 5.2052e-08  
a 2.770762592273198 2.7992e-08 au
q 2.551523975028585 1.4323e-07 au
i 4.398308617822257 5.4099e-06 deg
node 358.3137178582234 6.8031e-05 deg
peri 334.8155022411375 7.5347e-05 deg
M 344.6258693908532 3.4495e-05 deg
tp 2459072.442490119576
(2020-Aug-10.94249012)
0.0001617 TDB
period 1684.602342823765
4.61
2.5529e-05
6.989e-08
d
yr
n .2137002845410749 3.2384e-09 deg/d
Q 2.990001209517812 3.0207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      6969 days (19.08 yr)  
   first obs. used      2000-04-02  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58837  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:41:44  

Additional Information
 Earth MOID = 1.5422 au 
 Jupiter MOID = 2.30029 au 
 T_jup = 3.329 
[ 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 15.9   n/a MPO436859  

172927 (2005 GK157)          Discovered 2005-Apr-11 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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