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85172 (1990 QU6)
Classification: Main-belt Asteroid          SPK-ID: 2085172
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218865390683617 4.5968e-08  
a 2.362365540255406 6.2607e-09 au
q 1.838188426513774 1.1018e-07 au
i 3.09662112609021 4.4669e-06 deg
node 130.4585932067218 8.0567e-05 deg
peri 228.1162171382678 8.1138e-05 deg
M 113.9556656047302 8.6994e-06 deg
tp 2458780.690273273908
(2019-Oct-24.19027327)
3.1529e-05 TDB
period 1326.230695239077
3.63
5.2721e-06
1.443e-08
d
yr
n .271445986955613 1.0791e-09 deg/d
Q 2.886542653997039 7.6498e-09 au
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      15133 days (41.43 yr)  
   first obs. used      1979-08-14  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5463  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:39:51  

Additional Information
 Earth MOID = .834434 au 
 Jupiter MOID = 2.56414 au 
 T_jup = 3.515 
[ show covariance matrix ]

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 16.3   n/a MPO493473  

85172 (1990 QU6)          Discovered 1990-Aug-20 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1990 QU6 = 2001 SS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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