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 ]  
16554 (1991 UE2)
Classification: Main-belt Asteroid          SPK-ID: 2016554
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08747243421449412 6.2162e-08  
a 2.559034724950568 1.7822e-08 AU
q 2.335189728319724 1.5489e-07 AU
i 3.6672632761973 5.6471e-06 deg
node 47.19657225510463 9.5147e-05 deg
peri 52.07118270637146 0.00010053 deg
M 180.2367584282596 3.461e-05 deg
tp 2457747.139712583356
(2016-Dec-24.63971258)
0.0001464 JED
period 1495.246159225153
4.09
1.562e-05
4.277e-08
d
yr
n .2407630327481025 2.5152e-09 deg/d
Q 2.782879721581413 1.9381e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      993  
   data-arc span      23356 days (63.95 yr)  
   first obs. used      1950-08-14  
   last obs. used      2014-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49353  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:27:44  

Additional Information
 Earth MOID = 1.35397 AU 
 T_jup = 3.428 
[ 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 13.6 mag n/a MPO263495  

16554 (1991 UE2)          Discovered 1991-Oct-29 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UE2 = 1987 UN9 = 1997 ED 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-31 09:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin