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 ]  
13971 (1991 UF1)
Classification: Main-belt Asteroid          SPK-ID: 2013971
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104459817668314 6.4791e-08  
a 2.378324065292275 1.2927e-08 AU
q 1.87781532241216 1.5555e-07 AU
i 3.402531107390206 6.3962e-06 deg
node 93.31852300349857 9.6964e-05 deg
peri 308.5447370113356 9.9031e-05 deg
M 52.68847775257012 1.6546e-05 deg
tp 2456604.426851381020
(2013-Nov-07.92685138)
6.1339e-05 JED
period 1339.692025917177
3.67
1.0922e-05
2.99e-08
d
yr
n .268718476362907 2.1908e-09 deg/d
Q 2.878832808172389 1.5647e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      729  
   data-arc span      8201 days (22.45 yr)  
   first obs. used      1991-10-18  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54987  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:53:12  

Additional Information
 Earth MOID = .887466 AU 
 T_jup = 3.507 
[ 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 MPO272706  

13971 (1991 UF1)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 UF1 = 1993 FR31 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-31 11:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin