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117781 Jamesfisher (2005 GF115)
Classification: Main-belt Asteroid          SPK-ID: 2117781
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05907042542575885 4.6914e-08  
a 2.738414039295993 1.9098e-08 au
q 2.576654757002908 1.2909e-07 au
i 4.546757090737224 5.9658e-06 deg
node 215.7248866149953 6.1772e-05 deg
peri 22.13577775864885 7.9951e-05 deg
M 97.14932543178622 5.2634e-05 deg
tp 2458553.832468538195
(2019-Mar-11.33246854)
0.00024051 TDB
period 1655.1871113007
4.53
1.7315e-05
4.741e-08
d
yr
n .2174980686727921 2.2753e-09 deg/d
Q 2.900173321589078 2.0226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      9921 days (27.16 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:38:36  

Additional Information
 Earth MOID = 1.56543 au 
 Jupiter MOID = 2.08701 au 
 T_jup = 3.344 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457300.5 (2015-Oct-05.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05787995499700964 4.6728e-08  
q 2.581202447865601 1.2825e-07 au
tp 2456903.705622954566
(2014-Sep-03.20562295)
0.00024193 TDB
node 215.7873972287059 6.1697e-05 deg
peri 23.51597941728396 8.0666e-05 deg
i 4.548115103053608 5.9697e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      9921 days (27.16 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:38:36  

Additional Information
 Jupiter MOID = 2.08701 au 
 T_jup = 3.344 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.18353060615648E-15 -5.934707666879683E-15 -2.790208699927305E-12 3.086858662426806E-15 -6.591722709342457E-13 5.277679452408874E-18
q -5.934707666879683E-15 1.644826732516003E-14 8.599443235260585E-12 -1.238853359103851E-14 2.023789252915006E-12 3.891587775760825E-16
tp -2.790208699927305E-12 8.599443235260585E-12 5.852797720730494E-8 -4.036131327025056E-12 1.259234165930709E-8 -6.515360848155926E-12
node 3.086858662426806E-15 -1.238853359103851E-14 -4.036131327025056E-12 3.806495659515544E-9 -3.795432516977839E-9 -1.215633436125756E-10
peri -6.591722709342457E-13 2.023789252915006E-12 1.259234165930709E-8 -3.795432516977839E-9 6.507029019937993E-9 1.198195525453508E-10
i 5.277679452408874E-18 3.891587775760825E-16 -6.515360848155926E-12 -1.215633436125756E-10 1.198195525453508E-10 3.563691587684666E-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 MPO348192  

117781 Jamesfisher           Discovered 2005 Apr. 10 by Mt. Lemmon Survey at Mount Lemmon.
James Randall Fisher (b. 1942) is an author and Professor of English who earned a PhD at the University of Southern California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-10-18Last Updated: 2013-10-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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