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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1095421589567687 1.3755e-07  
a 2.527335859732334 2.1803e-08 AU
q 2.250486033248393 3.4839e-07 AU
i 16.1807062908126 1.2315e-05 deg
node 50.45485616805955 2.1759e-05 deg
peri 20.22104275685165 4.293e-05 deg
M 185.9776252342592 3.598e-05 deg
tp 2457709.906978324007
(2016-Nov-17.40697832)
0.00014861 JED
period 1467.549862714088
4.02
1.899e-05
5.199e-08
d
yr
n .245306826804655 3.1743e-09 deg/d
Q 2.804185686216275 2.4191e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      830  
   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      .49239  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:29:22  

Additional Information
 Earth MOID = 1.26843 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 12.8 mag n/a MPO302172  

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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