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 ]  
12389 (1994 WU)
Classification: Main-belt Asteroid          SPK-ID: 2012389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634754566378735 4.2199e-08  
a 3.087907051015058 1.9705e-08 au
q 2.583110035795062 1.2922e-07 au
i 13.09851307850086 4.5177e-06 deg
node 253.6079741135964 2.1399e-05 deg
peri 301.5246050072226 2.5528e-05 deg
M 65.1724216222387 1.4556e-05 deg
tp 2458241.696960564677
(2018-May-03.19696056)
7.957e-05 TDB
period 1981.959408312673
5.43
1.8971e-05
5.194e-08
d
yr
n .1816384323967984 1.7387e-09 deg/d
Q 3.592704066235055 2.2926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      13158 days (36.02 yr)  
   first obs. used      1983-11-08  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46316  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:25:01  

Additional Information
 Earth MOID = 1.60871 au 
 Jupiter MOID = 1.57524 au 
 T_jup = 3.166 
[ 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 12.7   n/a MPO452345  
diameter diameter 19.936 km 2.797 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.049   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

12389 (1994 WU)          Discovered 1994-Nov-25 by Kobayashi, T. at Oizumi
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 WU = 1983 VY4 = 1998 QY71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-20 03:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin