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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3121955955092837 9.7475e-08  
a 2.666238441644383 1.784e-08 AU
q 1.83385054358547 2.6434e-07 AU
i 4.089407850806009 8.0963e-06 deg
node 70.30179984833957 0.00017534 deg
peri 331.89539264 0.00017611 deg
M 241.0408728744622 2.0416e-05 deg
tp 2457525.963039444145
(2016-May-17.46303944)
9.4168e-05 JED
period 1590.182264873753
4.35
1.596e-05
4.37e-08
d
yr
n .2263891429002832 2.2722e-09 deg/d
Q 3.498626339703296 2.341e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      6120 days (16.76 yr)  
   first obs. used      1998-09-17  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .668  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 15:28:05  

Additional Information
 Earth MOID = .843523 AU 
 T_jup = 3.308 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4 mag n/a MPO257780  

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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