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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096964408607213 1.3935e-07  
a 2.526969008475706 2.13e-08 AU
q 2.249769502080575 3.5506e-07 AU
i 16.18225936684534 1.2784e-05 deg
node 50.45558715345152 2.5151e-05 deg
peri 20.19827515380873 4.6432e-05 deg
M 136.9327385063901 3.9246e-05 deg
tp 2456242.411474687236
(2012-Nov-10.91147469)
0.00015858 JED
period 1467.23034464997
4.02
1.8551e-05
5.079e-08
d
yr
n .2453602471572952 3.1022e-09 deg/d
Q 2.804168514870837 2.3637e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      22333 days (61.14 yr)  
   first obs. used      1953-02-14  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51774  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:10:49  

Additional Information
 Earth MOID = 1.26707 AU 
 T_jup = 3.390 
[ 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 12.7 mag n/a MPO263503  

17485 (1991 RP9)          Discovered 1991-Sep-05 by McNaught, R. H. at Siding Spring (413)
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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