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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1133984420647363 1.3818e-07  
a 3.007272468742034 6.3207e-08 au
q 2.666252455922514 4.247e-07 au
i 7.468366830548548 8.8481e-06 deg
node 292.6050516674773 0.00011294 deg
peri 78.1789549790936 0.00011981 deg
M 90.80116126541827 4.0636e-05 deg
tp 2456920.051882042765
(2014-Sep-19.55188204)
0.00021605 JED
period 1904.836018110233
5.22
6.0054e-05
1.644e-07
d
yr
n .1889926463891375 5.9584e-09 deg/d
Q 3.348292481561554 7.0375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      6339 days (17.36 yr)  
   first obs. used      1998-08-22  
   last obs. used      2015-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54307  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 22:03:50  

Additional Information
 Earth MOID = 1.67663 au 
 Jupiter MOID = 2.1626 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
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 2016-Feb-06 20:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin