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JPL Small-Body Database Browser
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66255 (1999 GP31)
Classification: Main-belt Asteroid          SPK-ID: 2066255
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1873644352253963 3.757e-08  
a 2.330660135307892 1.033e-08 au
q 1.893977315353583 8.6371e-08 au
i 1.995190645486442 4.5142e-06 deg
node 163.8832662778682 0.0001195 deg
peri 94.40988508373785 0.00012011 deg
M 298.899213299317 1.1921e-05 deg
tp 2459221.077469392638
(2021-Jan-06.57746939)
4.338e-05 TDB
period 1299.621384096873
3.56
8.6403e-06
2.366e-08
d
yr
n .2770037523275822 1.8416e-09 deg/d
Q 2.767342955262201 1.2266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      7191 days (19.69 yr)  
   first obs. used      1999-04-07  
   last obs. used      2018-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:28:52  

Additional Information
 Earth MOID = .88012 au 
 Jupiter MOID = 2.29242 au 
 T_jup = 3.547 
[ 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 16.1   n/a MPO266239  

66255 (1999 GP31)          Discovered 1999-Apr-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GP31 = 2002 AD56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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