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15911 Davidgauthier (1997 TL21)
Classification: Main-belt Asteroid          SPK-ID: 2015911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2092042127893578 3.156e-08  
a 2.431333676488423 9.8535e-09 au
q 1.922688428670407 7.6698e-08 au
i 2.136951666673135 5.1906e-06 deg
node 15.12287971140878 0.00010065 deg
peri 274.2115932888337 0.00010156 deg
M 116.4935218555277 1.2991e-05 deg
tp 2458752.410724628394
(2019-Sep-25.91072463)
4.9983e-05 TDB
period 1384.73055466409
3.79
8.4179e-06
2.305e-08
d
yr
n .2599783754228846 1.5804e-09 deg/d
Q 2.939978924306438 1.1915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      9985 days (27.34 yr)  
   first obs. used      1993-09-15  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:12:16  

Additional Information
 Earth MOID = .905924 au 
 Jupiter MOID = 2.2445 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457663.5 (2016-Oct-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090629056233822 3.1434e-08  
q 1.923306611820885 7.6399e-08 au
tp 2457368.378941519360
(2015-Dec-11.87894152)
5.1263e-05 TDB
node 15.16709996632186 0.00010055 deg
peri 274.3357916587232 0.00010147 deg
i 2.137872715679046 5.1932e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      9985 days (27.34 yr)  
   first obs. used      1993-09-15  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:12:16  

Additional Information
 Jupiter MOID = 2.2445 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.881115608090178E-16 -2.388899997252163E-15 -8.933130821507755E-13 5.294139451537007E-15 -2.277231709611373E-13 -9.369998788203903E-16
q -2.388899997252163E-15 5.836834703436953E-15 2.088857502870164E-12 -1.155161979336521E-14 5.334501316624988E-13 2.372402268607345E-15
tp -8.933130821507755E-13 2.088857502870164E-12 2.627946270521524E-9 -1.11970826773839E-11 7.137797655569537E-10 1.940964316357986E-12
node 5.294139451537007E-15 -1.155161979336521E-14 -1.11970826773839E-11 1.01100707147912E-8 -1.01056293657525E-8 2.881175650051898E-10
peri -2.277231709611373E-13 5.334501316624988E-13 7.137797655569537E-10 -1.01056293657525E-8 1.029626985323984E-8 -2.874091306995625E-10
i -9.369998788203903E-16 2.372402268607345E-15 1.940964316357986E-12 2.881175650051898E-10 -2.874091306995625E-10 2.696954711826366E-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 16.61   n/a E2021B10  

15911 Davidgauthier           Discovered 1997 Oct. 4 by Spacewatch at Kitt Peak.
David Gauthier (b. 1932) is an influential political philosopher who earned a D.Phil. from the University of Oxford, then was a faculty member at the University of Toronto and, beginning in 1980, at the University of Pittsburgh. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

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Alternate Designations
 1997 TL21 = 1993 SA13 
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