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22748 (1998 UW8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2022748
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08565841825235748 5.633e-08  
a 3.219207337722361 4.6403e-08 AU
q 2.943455129146681 1.9389e-07 AU
i 1.638269988763078 7.3103e-06 deg
node 344.5533839371935 0.00020252 deg
peri 316.0541958924412 0.0002084 deg
M 5.093011176930474 5.3621e-05 deg
tp 2456970.653460922277
(2014-Nov-09.15346092)
0.000314 JED
period 2109.705573914706
5.78
4.5615e-05
1.249e-07
d
yr
n .1706399245710836 3.6895e-09 deg/d
Q 3.494959546298041 5.0378e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      691  
   data-arc span      13617 days (37.28 yr)  
   first obs. used      1978-03-15  
   last obs. used      2015-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57633  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:31:39  

Additional Information
 Earth MOID = 1.92931 AU 
 T_jup = 3.183 
[ 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 13.9 mag n/a MPO266074  

22748 (1998 UW8)          Discovered 1998-Oct-17 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UW8 = 1978 EJ9 = 2000 AD134 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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