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17485 (1991 RP9)
Classification: Main-belt Asteroid          SPK-ID: 2017485
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093035059519756 9.5415e-08  
a 2.527732865394968 2.1413e-08 au
q 2.251442801097264 2.4619e-07 au
i 16.17921596130939 9.9376e-06 deg
node 50.44335910724894 2.1081e-05 deg
peri 20.21270225370164 3.8933e-05 deg
M 284.0888505585705 3.4852e-05 deg
tp 2457710.026798936315
(2016-Nov-17.52679894)
0.00014329 JED
period 1467.895670622781
4.02
1.8653e-05
5.107e-08
d
yr
n .2452490372474929 3.1164e-09 deg/d
Q 2.804022929692671 2.3754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      22887 days (62.66 yr)  
   first obs. used      1953-02-14  
   last obs. used      2015-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49767  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 16:38:38  

Additional Information
 Earth MOID = 1.26884 au 
 Jupiter MOID = 2.56351 au 
 T_jup = 3.389 
[ 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 12.9 mag n/a MPO347661  

17485 (1991 RP9)          Discovered 1991-Sep-05 by McNaught, R. H. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RP9 = 1998 HM144 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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