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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1092027218587706 9.5432e-08  
a 2.52757723454794 2.1463e-08 au
q 2.251558920827041 2.4616e-07 au
i 16.18015943710691 9.9382e-06 deg
node 50.44014019079907 2.1079e-05 deg
peri 20.21372794380888 3.8955e-05 deg
M 333.1334042987611 3.5063e-05 deg
tp 2457710.038103810897
(2016-Nov-17.53810381)
0.00014338 JED
period 1467.760106655591
4.02
1.8695e-05
5.118e-08
d
yr
n .2452716887232267 3.1241e-09 deg/d
Q 2.803595548268839 2.3807e-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 = 1.26825 au 
 Jupiter MOID = 2.56234 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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