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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284793215090987 1.0706e-07  
a 2.318715471701654 1.4252e-08 AU
q 2.020808481124776 2.5049e-07 AU
i 6.928242795224705 9.2727e-06 deg
node 10.47821872097854 4.0991e-05 deg
peri 332.0929067986998 4.6383e-05 deg
M 179.5500058970212 2.2679e-05 deg
tp 2456157.290367512775
(2012-Aug-17.79036751)
8.0101e-05 JED
period 1289.643331051779
3.53
1.189e-05
3.255e-08
d
yr
n .2791469480995176 2.5737e-09 deg/d
Q 2.616622462278532 1.6083e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      929  
   data-arc span      11307 days (30.96 yr)  
   first obs. used      1983-04-17  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58213  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:51:44  

Additional Information
 Earth MOID = 1.01506 AU 
 T_jup = 3.558 
[ 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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