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523980 (1999 GY55)
Classification: Main-belt Asteroid          SPK-ID: 2523980
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0722475263954121 5.6288e-08  
a 2.539185138521542 1.9728e-08 au
q 2.355735293203369 1.3973e-07 au
i 14.94600434386978 6.656e-06 deg
node 187.2686269456826 2.2958e-05 deg
peri 51.63064789593214 5.1972e-05 deg
M 38.44008104943965 4.8444e-05 deg
tp 2458842.694632077340
(2019-Dec-25.19463208)
0.00019842 TDB
period 1477.882743771833
4.05
1.7224e-05
4.716e-08
d
yr
n .2435917203290517 2.8389e-09 deg/d
Q 2.722634983839716 2.1154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      9190 days (25.16 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:40:53  

Additional Information
 Earth MOID = 1.37358 au 
 Jupiter MOID = 2.28145 au 
 T_jup = 3.396 
[ 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 16.7   .32096 MPO457215 autocmod 2.6q

523980 (1999 GY55)          Discovered 1995-Mar-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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