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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221791594082799 4.8331e-08  
a 2.362218141812499 6.6153e-09 au
q 1.838298014568597 1.1607e-07 au
i 3.096295867079355 4.6187e-06 deg
node 130.4624971146729 8.609e-05 deg
peri 228.0265479688259 8.6714e-05 deg
M 311.1476018788389 9.0294e-06 deg
tp 2458780.454128496393
(2019-Oct-23.95412850)
3.3453e-05 TDB
period 1326.106573069941
3.63
5.5706e-06
1.525e-08
d
yr
n .2714713940121712 1.1404e-09 deg/d
Q 2.886138269056401 8.0825e-09 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      14689 days (40.22 yr)  
   first obs. used      1979-08-14  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52954  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:09:23  

Additional Information
 Earth MOID = .83529 au 
 Jupiter MOID = 2.55991 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 16.2   n/a MPO439613  

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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