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JPL Small-Body Database Browser
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13960 (1991 GF8)
Classification: Main-belt Asteroid          SPK-ID: 2013960
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1177609060951918 3.9744e-08  
a 2.776370757030695 1.4891e-08 au
q 2.449422821026567 1.0948e-07 au
i 9.078091335535555 4.6107e-06 deg
node 7.616057245074596 2.7515e-05 deg
peri 106.9106210922196 3.4323e-05 deg
M 188.8215074293698 1.9182e-05 deg
tp 2459803.954552370671
(2022-Aug-12.45455237)
9.0075e-05 TDB
period 1689.719511544923
4.63
1.3594e-05
3.722e-08
d
yr
n .2130531117977382 1.7141e-09 deg/d
Q 3.103318693034824 1.6645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1832  
   data-arc span      10337 days (28.30 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-07-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:15  

Additional Information
 Earth MOID = 1.48405 au 
 Jupiter MOID = 2.00937 au 
 T_jup = 3.307 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456689.5 (2014-Feb-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1184068338257613 3.9444e-08  
q 2.444644042903669 1.0847e-07 au
tp 2456420.292625035830
(2013-May-07.79262504)
9.1312e-05 TDB
node 7.879090242566479 2.7487e-05 deg
peri 105.2844931751787 3.4337e-05 deg
i 9.087107001310821 4.6133e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1832  
   data-arc span      10337 days (28.30 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-07-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:15  

Additional Information
 Jupiter MOID = 2.00937 au 
 T_jup = 3.307 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.555804422688304E-15 -4.250573011830641E-15 2.870203565375286E-13 -6.258975457409213E-15 7.227512947244006E-14 -3.649307663656208E-15
q -4.250573011830641E-15 1.176496851022663E-14 -9.881150600028181E-13 1.801161588568844E-14 -2.38643968382473E-13 1.027074804577451E-14
tp 2.870203565375286E-13 -9.881150600028181E-13 8.33792007193637E-9 2.961151955071082E-12 1.899122595468614E-9 -3.127172655276222E-12
node -6.258975457409213E-15 1.801161588568844E-14 2.961151955071082E-12 7.55553018968543E-10 -7.448970834925218E-10 -7.284136046720753E-12
peri 7.227512947244006E-14 -2.38643968382473E-13 1.899122595468614E-9 -7.448970834925218E-10 1.179009557426157E-9 6.545356395217599E-12
i -3.649307663656208E-15 1.027074804577451E-14 -3.127172655276222E-12 -7.284136046720753E-12 6.545356395217599E-12 2.128254110042056E-11

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 13.7   n/a MPO344416  

13960 (1991 GF8)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 GF8 = 1999 AF23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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