Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
13364 (1998 UK20)
Classification: Main-belt Asteroid          SPK-ID: 2013364
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140984781062139 4.3532e-08  
a 2.734374299566797 1.5417e-08 au
q 2.422386353413481 1.2431e-07 au
i 15.08701844320624 4.797e-06 deg
node 20.93068313544693 1.541e-05 deg
peri 231.4821462200967 2.453e-05 deg
M 62.88363056488519 1.9809e-05 deg
tp 2458712.016831840753
(2019-Aug-16.51683184)
9.0627e-05 TDB
period 1651.525835967272
4.52
1.3967e-05
3.824e-08
d
yr
n .2179802411562965 1.8435e-09 deg/d
Q 3.046362245720113 1.7176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2629  
   data-arc span      15973 days (43.73 yr)  
   first obs. used      1975-11-26  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:06:29  

Additional Information
 Earth MOID = 1.43943 au 
 Jupiter MOID = 2.02881 au 
 T_jup = 3.294 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO395132  
diameter diameter 11.329 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.114 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.121   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 04:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin