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48474 (1991 UR)
Classification: Main-belt Asteroid          SPK-ID: 2048474
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286671968634862 1.0791e-07  
a 2.318393210244484 1.5256e-08 AU
q 2.020092054654987 2.528e-07 AU
i 6.928904027706149 9.2971e-06 deg
node 10.47666114375264 4.0672e-05 deg
peri 332.0828914897011 4.5783e-05 deg
M 235.4086085875094 2.2615e-05 deg
tp 2457446.736002511928
(2016-Feb-28.23600251)
8.2543e-05 JED
period 1289.374483124915
3.53
1.2727e-05
3.484e-08
d
yr
n .2792051531278234 2.7559e-09 deg/d
Q 2.616694365833981 1.7219e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      942  
   data-arc span      11339 days (31.04 yr)  
   first obs. used      1983-04-17  
   last obs. used      2014-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5386  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 15:13:03  

Additional Information
 Earth MOID = 1.01603 AU 
 T_jup = 3.559 
[ 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 14.2 mag n/a MPO253675  

48474 (1991 UR)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 UR = 1998 SD22 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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