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13364 (1998 UK20)
Classification: Main-belt Asteroid          SPK-ID: 2013364
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130481198104779 5.7164e-08  
a 2.735093131411975 2.6671e-08 au
q 2.425895995399299 1.6019e-07 au
i 15.09253233509457 7.9301e-06 deg
node 20.99719070152246 2.3368e-05 deg
peri 231.8099824247212 4.126e-05 deg
M 73.83195062299853 3.5884e-05 deg
tp 2457061.657055564774
(2015-Feb-08.15705556)
0.00016379 JED
period 1652.177126127339
4.52
2.4166e-05
6.616e-08
d
yr
n .2178943130896812 3.1871e-09 deg/d
Q 3.044290267424651 2.9686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      14615 days (40.01 yr)  
   first obs. used      1975-11-26  
   last obs. used      2015-12-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48468  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:23:52  

Additional Information
 Earth MOID = 1.4423 au 
 Jupiter MOID = 2.02992 au 
 T_jup = 3.293 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO250344  
rotation period rot_per 9.1145 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

13364 (1998 UK20)          Discovered 1998-Oct-20 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 UK20 = 1975 WT1 = 1980 XM1 = 1991 CH3 = 1996 DE3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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