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173222 (1998 UQ8)
Classification: Main-belt Asteroid          SPK-ID: 2173222
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3088679616267524 4.5892e-08  
a 2.668107724953438 1.5407e-08 au
q 1.844014730546478 1.2171e-07 au
i 4.085501152725625 5.235e-06 deg
node 70.23047548320793 0.00011327 deg
peri 332.72986455055 0.00011396 deg
M 332.150778847332 1.7081e-05 deg
tp 2459123.644216651524
(2020-Oct-01.14421665)
7.6244e-05 TDB
period 1591.854858400651
4.36
1.3788e-05
3.775e-08
d
yr
n .2261512713299093 1.9588e-09 deg/d
Q 3.492200719360398 2.0166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      7151 days (19.58 yr)  
   first obs. used      1998-09-17  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61565  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:30:02  

Additional Information
 Earth MOID = .854144 au 
 Jupiter MOID = 1.92474 au 
 T_jup = 3.309 
[ 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 16.4   n/a MPO417933  

173222 (1998 UQ8)          Discovered 1998-Oct-17 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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