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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2217983799682571 4.8303e-08  
a 2.362109820862861 6.4969e-09 au
q 1.838197689288369 1.16e-07 au
i 3.096511138597073 4.5722e-06 deg
node 130.4598453169132 8.5871e-05 deg
peri 228.0903007993149 8.6492e-05 deg
M 59.69967082189668 9.0266e-06 deg
tp 2458780.603665289974
(2019-Oct-24.10366529)
3.3017e-05 TDB
period 1326.015359980412
3.63
5.4708e-06
1.498e-08
d
yr
n .2714900678113698 1.1201e-09 deg/d
Q 2.886021952437353 7.9379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      14706 days (40.26 yr)  
   first obs. used      1979-08-14  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53104  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:01:43  

Additional Information
 Earth MOID = .836096 au 
 Jupiter MOID = 2.56376 au 
 T_jup = 3.515 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456798.5 (2014-May-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2233358586277472 4.8418e-08  
q 1.833643021572287 1.1641e-07 au
tp 2457454.764813445563
(2016-Mar-07.26481345)
3.1521e-05 TDB
node 130.5394193017139 8.5937e-05 deg
peri 228.0452419348663 8.6541e-05 deg
i 3.096366644113127 4.5736e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      14706 days (40.26 yr)  
   first obs. used      1979-08-14  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53104  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:01:43  

Additional Information
 Jupiter MOID = 2.56376 au 
 T_jup = 3.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.344316643545865E-15 -5.631611644843827E-15 -7.39434878318062E-14 1.235822936256653E-14 1.337447407331686E-15 -3.592116231501069E-15
q -5.631611644843827E-15 1.355076337649939E-14 1.847870862437009E-13 -3.07241235500883E-14 -4.650550332226569E-15 8.712427382283672E-15
tp -7.39434878318062E-14 1.847870862437009E-13 9.935651971309613E-10 -7.937293368638782E-12 3.407752947042263E-10 -1.505849495000584E-13
node 1.235822936256653E-14 -3.07241235500883E-14 -7.937293368638782E-12 7.385196271213882E-9 -7.37527001205836E-9 1.088225757645344E-10
peri 1.337447407331686E-15 -4.650550332226569E-15 3.407752947042263E-10 -7.37527001205836E-9 7.489429416619908E-9 -1.08817850812354E-10
i -3.592116231501069E-15 8.712427382283672E-15 -1.505849495000584E-13 1.088225757645344E-10 -1.08817850812354E-10 2.091812963681064E-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 16.3   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

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