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85243 (1993 QG8)
Classification: Main-belt Asteroid          SPK-ID: 2085243
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2396694834759122 5.2548e-08  
a 3.189476631031159 2.8797e-08 au
q 2.425056414313429 1.7692e-07 au
i 9.297033056395513 4.0397e-06 deg
node 151.7644546341048 3.3415e-05 deg
peri 258.3996274264286 3.413e-05 deg
M 217.7965429261928 1.0082e-05 deg
tp 2459822.336106006825
(2022-Aug-30.83610601)		 6.5708e-05 TDB
period 2080.547155818426
5.70		 2.8177e-05
7.714e-08		 d
yr
n .1730314061823735 2.3434e-09 deg/d
Q 3.95389684774889 3.5699e-08 au
   Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      9887 days (27.07 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:35  

Additional Information
 Earth MOID = 1.45614 au 
 Jupiter MOID = 1.58843 au 
 T_jup = 3.132 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457481.5 (2016-Apr-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2420808557883737 5.2538e-08  
q 2.414819306197748 1.7692e-07 au
tp 2457745.229707130098
(2016-Dec-22.72970713)		 4.9324e-05 TDB
node 151.8525853673358 3.3425e-05 deg
peri 258.4376714754628 3.4123e-05 deg
i 9.300833050172351 4.0432e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      9887 days (27.07 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:35  

Additional Information
 Jupiter MOID = 1.58843 au 
 T_jup = 3.132 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.760217790404601E-15 -9.231456162305481E-15 -5.342454638383045E-13 1.791337285728794E-14 -1.161869206948401E-13 -1.662306250352724E-16
q -9.231456162305481E-15 3.13020932140894E-14 2.088755199776226E-12 -5.950440183910849E-14 4.160078714079557E-13 1.382335770144595E-15
tp -5.342454638383045E-13 2.088755199776226E-12 2.432898017005758E-9 -7.36350311387891E-12 3.969847613815484E-10 6.610293445650262E-13
node 1.791337285728794E-14 -5.950440183910849E-14 -7.36350311387891E-12 1.117262213645802E-9 -1.103937844041002E-9 3.043067425736707E-11
peri -1.161869206948401E-13 4.160078714079557E-13 3.969847613815484E-10 -1.103937844041002E-9 1.164371583415059E-9 -2.997040409225217E-11
i -1.662306250352724E-16 1.382335770144595E-15 6.610293445650262E-13 3.043067425736707E-11 -2.997040409225217E-11 1.634717230458215E-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 14.93   n/a E2021B10  
diameter diameter 3.077 km 0.801 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.204   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85243 (1993 QG8)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1993 QG8 = 1999 TL245 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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