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JPL Small-Body Database Browser
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13660 (1997 GE8)
Classification: Main-belt Asteroid          SPK-ID: 2013660
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133350466035958 2.9757e-08  
a 2.430044063855475 9.351e-09 au
q 2.105996555452434 7.3198e-08 au
i .4005606772712476 4.2644e-06 deg
node 254.4412534975277 0.00055112 deg
peri 228.9768321792691 0.00055145 deg
M 115.4255934227439 1.9048e-05 deg
tp 2458556.871677283239
(2019-Mar-14.37167728)
7.2375e-05 TDB
period 1383.628980733182
3.79
7.9865e-06
2.187e-08
d
yr
n .2601853567776796 1.5018e-09 deg/d
Q 2.754091572258516 1.0598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      10045 days (27.50 yr)  
   first obs. used      1991-10-01  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54391  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:23:15  

Additional Information
 Earth MOID = 1.12165 au 
 Jupiter MOID = 2.30563 au 
 T_jup = 3.496 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456323.5 (2013-Jan-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334915471067142 2.9825e-08  
q 2.105793297035972 7.3523e-08 au
tp 2455790.726418050600
(2011-Aug-17.22641805)
6.913e-05 TDB
node 254.6442446125985 0.00055171 deg
peri 228.9269907191834 0.00055203 deg
i .4004093201499823 4.2617e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      10045 days (27.50 yr)  
   first obs. used      1991-10-01  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54391  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:23:15  

Additional Information
 Jupiter MOID = 2.30563 au 
 T_jup = 3.496 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.895600652889818E-16 -2.179123306957766E-15 -9.551094971234828E-14 4.143035737984587E-16 -7.521329686778675E-15 1.0981877386677E-17
q -2.179123306957766E-15 5.405606664126884E-15 2.733862255016243E-13 -1.520332642986152E-15 3.508734874217683E-14 9.483805449961879E-18
tp -9.551094971234828E-14 2.733862255016243E-13 4.778963516241438E-9 -7.546850072755541E-12 1.324990010596868E-9 -1.14428740770396E-13
node 4.143035737984587E-16 -1.520332642986152E-15 -7.546850072755541E-12 3.043809650595194E-7 -3.043750705452531E-7 -7.061082160839264E-10
peri -7.521329686778675E-15 3.508734874217683E-14 1.324990010596868E-9 -3.043750705452531E-7 3.04740941472785E-7 7.060669820392722E-10
i 1.0981877386677E-17 9.483805449961879E-18 -1.14428740770396E-13 -7.061082160839264E-10 7.060669820392722E-10 1.816177759952798E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO425943  

13660 (1997 GE8)          Discovered 1997-Apr-02 by LINEAR at Socorro
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 GE8 = 1991 TP8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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