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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2220106977784687 4.4821e-08  
a 2.36222550529489 6.168e-09 au
q 1.837786172554276 1.0731e-07 au
i 3.096739711871323 4.4633e-06 deg
node 130.459236039566 7.6852e-05 deg
peri 228.1257547644126 7.7388e-05 deg
M 167.1379708585996 8.6108e-06 deg
tp 2458780.822783000510
(2019-Oct-24.32278300)
3.0837e-05 TDB
period 1326.112773663677
3.63
5.1939e-06
1.422e-08
d
yr
n .2714701246753103 1.0632e-09 deg/d
Q 2.886664838035505 7.5373e-09 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      15193 days (41.60 yr)  
   first obs. used      1979-08-14  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:09:40  

Additional Information
 Earth MOID = .834868 au 
 Jupiter MOID = 2.56447 au 
 T_jup = 3.515 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.29   n/a MPCxxxxx  

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

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