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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096964258042479 1.3758e-07  
a 2.526968993158455 2.1806e-08 AU
q 2.249769526490813 3.4842e-07 AU
i 16.18224764198631 1.2319e-05 deg
node 50.45556763686054 2.1762e-05 deg
peri 20.19829678219093 4.2877e-05 deg
M 136.9327400570951 3.5811e-05 deg
tp 2456242.411473441411
(2012-Nov-10.91147344)
0.00014494 JED
period 1467.23033130952
4.02
1.8992e-05
5.2e-08
d
yr
n .2453602493881761 3.1759e-09 deg/d
Q 2.804168459826096 2.4198e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      825  
   data-arc span      22416 days (61.37 yr)  
   first obs. used      1953-02-14  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49379  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:38:47  

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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