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85200 Johnhault (1991 TG15)
Classification: Main-belt Asteroid          SPK-ID: 2085200
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767742270224481 4.211e-08  
a 2.562281049291807 1.8257e-08 au
q 2.10933579738898 1.0923e-07 au
i 5.263445019250213 4.3027e-06 deg
node 37.92670402798523 7.0814e-05 deg
peri 25.31423589556718 7.3307e-05 deg
M 331.6366733047054 2.3036e-05 deg
tp 2459118.530226412403
(2020-Sep-26.03022641)
9.6463e-05 TDB
period 1498.092306482303
4.10
1.6011e-05
4.384e-08
d
yr
n .2403056196485799 2.5683e-09 deg/d
Q 3.015226301194633 2.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      10599 days (29.02 yr)  
   first obs. used      1991-10-06  
   last obs. used      2020-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59188  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:44  

Additional Information
 Earth MOID = 1.12373 au 
 Jupiter MOID = 2.31911 au 
 T_jup = 3.406 
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Orbital Elements at Epoch 2457035.5 (2015-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765571273412233 4.1466e-08  
q 2.110617589661913 1.0743e-07 au
tp 2457614.827534181133
(2016-Aug-14.32753418)
8.9883e-05 TDB
node 38.00752856768446 7.0611e-05 deg
peri 24.3230820933538 7.3169e-05 deg
i 5.272623816511058 4.3066e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      10599 days (29.02 yr)  
   first obs. used      1991-10-06  
   last obs. used      2020-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59188  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:44  

Additional Information
 Jupiter MOID = 2.31911 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.719425823575046E-15 -4.409666248329044E-15 1.092194083596994E-12 3.03330841965708E-15 2.797196600805224E-13 5.62958380531447E-16
q -4.409666248329044E-15 1.154096503672105E-14 -2.28859387173014E-12 -8.181295568428021E-15 -6.279445268575544E-13 -8.569965476901556E-16
tp 1.092194083596994E-12 -2.28859387173014E-12 8.078902725330371E-9 3.711018319833491E-11 1.782021942088571E-9 3.63487995182592E-12
node 3.03330841965708E-15 -8.181295568428021E-15 3.711018319833491E-11 4.985955227616726E-9 -4.95621826548983E-9 1.504780686924238E-12
peri 2.797196600805224E-13 -6.279445268575544E-13 1.782021942088571E-9 -4.95621826548983E-9 5.353659749111561E-9 -6.991795808992367E-13
i 5.62958380531447E-16 -8.569965476901556E-16 3.63487995182592E-12 1.504780686924238E-12 -6.991795808992367E-13 1.85466822336619E-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 16.1   n/a MPO439613  

85200 Johnhault           Discovered 1991 Oct. 6 by A. Lowe on plates taken at Palomar.
John A. Hault (b. 1946) was curator of Edmonton's Queen Elizabeth Planetarium when, in the mid-1970s, he recognized the need for a major science center. He played the major role in developing the project and served as the first director of the Edmonton Space Sciences Centre (now the Odyssium) when it opened in 1984.
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

Alternate Designations
 1991 TG15 = 1999 TU311 = 2003 QZ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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