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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1873978077749079 3.0909e-08  
a 2.330596950478337 8.8027e-09 au
q 1.893848191151811 7.3425e-08 au
i 1.995253185379062 4.2984e-06 deg
node 163.8825036454561 9.8523e-05 deg
peri 94.43932069134205 9.9143e-05 deg
M 354.2812829754255 1.1913e-05 deg
tp 2459221.144068624130
(2021-Jan-06.64406862)
4.3045e-05 TDB
period 1299.568534821783
3.56
7.3627e-06
2.016e-08
d
yr
n .2770150171798125 1.5694e-09 deg/d
Q 2.767345709804863 1.0452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1999-04-07  
   last obs. used      2020-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55164  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:33  

Additional Information
 Earth MOID = .878319 au 
 Jupiter MOID = 2.29148 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 16.18   n/a E2021B10  

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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