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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457130.5 (2015-Apr-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2233492965862665 4.6067e-08  
q 1.833779173333378 1.1052e-07 au
tp 2457454.597349007657
(2016-Mar-07.09734901)
2.9882e-05 TDB
node 130.5384214129223 8.0633e-05 deg
peri 228.0012773822716 8.1189e-05 deg
i 3.096375394643687 4.4681e-06 deg
  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
 Jupiter MOID = 2.56414 au 
 T_jup = 3.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.122148172964045E-15 -5.086778615703799E-15 -1.77526510949907E-13 1.28917754460002E-14 -5.25675111864607E-14 -3.222297258308395E-15
q -5.086778615703799E-15 1.221426335161697E-14 4.379397165911463E-13 -3.181168775815902E-14 1.274458181489121E-13 7.802073793111201E-15
tp -1.77526510949907E-13 4.379397165911463E-13 8.929528758749702E-10 -7.91695812571654E-12 3.003736477238542E-10 1.050342824666286E-13
node 1.28917754460002E-14 -3.181168775815902E-14 -7.91695812571654E-12 6.5017565227234E-9 -6.49338198190596E-9 9.940724204411006E-11
peri -5.25675111864607E-14 1.274458181489121E-13 3.003736477238542E-10 -6.49338198190596E-9 6.591598161052039E-9 -9.930075903434224E-11
i -3.222297258308395E-15 7.802073793111201E-15 1.050342824666286E-13 9.940724204411006E-11 -9.930075903434224E-11 1.996381786021606E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2137-Oct-22 16:51 < 00:01 Juno 0.0289452469720709 0.0289409905302431 0.0289495062126122 5.13736660268013 5.13736652086603 2501878.202349473 0.774357257072881 504.392058553732 41.9885849140316 -65.5576501634866 93893.4225794651 T 20 CATAB v2.0f-lin.ifort 2021-Feb-24 07:39:52 2021-Feb-24 07:39

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