Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
18594 (1998 BJ)
Classification: Main-belt Asteroid          SPK-ID: 2018594
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1891952004588528 7.6269e-08  
a 2.233469030844049 1.4919e-08 AU
q 1.810907409834869 1.7351e-07 AU
i 6.357555325028402 6.3929e-06 deg
node 284.1106475213414 7.9833e-05 deg
peri 120.1231902830637 8.2693e-05 deg
M 13.64959262688979 2.2367e-05 deg
tp 2456754.274084770024
(2014-Apr-06.77408477)
7.5517e-05 JED
period 1219.181402528283
3.34
1.2216e-05
3.345e-08
d
yr
n .2952800947040764 2.9587e-09 deg/d
Q 2.656030651853228 1.7742e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      8442 days (23.11 yr)  
   first obs. used      1990-10-17  
   last obs. used      2013-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54056  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-20 04:08:59  

Additional Information
 Earth MOID = .829124 AU 
 T_jup = 3.608 
[ 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 14.8 mag n/a MPO279709  

18594 (1998 BJ)          Discovered 1998-Jan-16 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BJ = 1990 UR14 = 2000 RB44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-23 11:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin