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11290 (1991 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2011290
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205115683627472 7.2143e-08  
a 2.54847265478114 2.0542e-08 AU
q 2.025740943989788 1.824e-07 AU
i 11.81022349651244 1.1405e-05 deg
node 323.1846440705574 3.0713e-05 deg
peri 49.71270617534431 4.5648e-05 deg
M 195.3271944857587 3.4007e-05 deg
tp 2457480.232096690572
(2016-Apr-01.73209669)
0.00014485 JED
period 1485.998577873524
4.07
1.7967e-05
4.919e-08
d
yr
n .2422613354820049 2.9291e-09 deg/d
Q 3.071204365572492 2.4756e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      13983 days (38.28 yr)  
   first obs. used      1975-11-27  
   last obs. used      2014-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51967  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:58:05  

Additional Information
 Earth MOID = 1.04424 AU 
 T_jup = 3.383 
[ 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 13.7 mag n/a MPO263451  

11290 (1991 RA1)          Discovered 1991-Sep-10 by Sugie, A. at Dynic (402)
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RA1 = 1975 WB = 1987 QL3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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