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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128731075930012 8.5126e-08  
a 2.318851350514026 1.49e-08 au
q 2.020343121240594 2.0282e-07 au
i 6.928710914515441 8.1235e-06 deg
node 10.4722467622628 3.9465e-05 deg
peri 331.9946005103458 4.454e-05 deg
M 347.1686704482366 2.1509e-05 deg
tp 2457446.470258843356
(2016-Feb-27.97025884)
7.7204e-05 JED
period 1289.756694101422
3.53
1.2431e-05
3.403e-08
d
yr
n .2791224125034012 2.6903e-09 deg/d
Q 2.617359579787458 1.6818e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      11754 days (32.18 yr)  
   first obs. used      1983-04-17  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53458  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 13:16:14  

Additional Information
 Earth MOID = 1.01391 au 
 Jupiter MOID = 2.76177 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
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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