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 ]  
257544 (1998 QU4)
Classification: Main-belt Asteroid          SPK-ID: 2257544
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136344593692938 1.5366e-07  
a 3.00714987112151 6.713e-08 AU
q 2.665434021274176 4.7903e-07 AU
i 7.468915721036552 9.0971e-06 deg
node 292.6057287651245 0.00012534 deg
peri 78.08170761811519 0.00013185 deg
M 15.26634708072288 4.2098e-05 deg
tp 2456919.727473470297
(2014-Sep-19.22747347)
0.00022311 JED
period 1904.719537485852
5.21
6.378e-05
1.746e-07
d
yr
n .1890042039864748 6.3289e-09 deg/d
Q 3.348865720968844 7.4758e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      5901 days (16.16 yr)  
   first obs. used      1998-08-22  
   last obs. used      2014-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60197  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 18:09:43  

Additional Information
 Earth MOID = 1.67758 AU 
 T_jup = 3.228 
[ 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 15.0 mag n/a MPO266702  

257544 (1998 QU4)          Discovered 1998-Aug-22 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20110119/Numbers.arcLast Updated: 2011-01-25

Alternate Designations
 1998 QU4 = 2004 XT133 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Dec-20 13:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin