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22748 (1998 UW8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2022748
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08658445440934709 3.1011e-08  
a 3.220633598365156 2.193e-08 au
q 2.941776795398297 1.0798e-07 au
i 1.639272420792572 4.6743e-06 deg
node 344.3501154055466 0.00012423 deg
peri 313.7184486197201 0.00012772 deg
M 23.02233247532607 2.9531e-05 deg
tp 2459065.492707913964
(2020-Aug-03.99270791)
0.00017324 TDB
period 2111.107777765887
5.78
2.1563e-05
5.904e-08
d
yr
n .1705265850429368 1.7417e-09 deg/d
Q 3.499490401332015 2.3829e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      15497 days (42.43 yr)  
   first obs. used      1978-03-15  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:19  

Additional Information
 Earth MOID = 1.92434 au 
 Jupiter MOID = 1.67309 au 
 T_jup = 3.183 
[ 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 14.01   n/a E2021B10  

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