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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1095421455500964 1.0979e-07  
a 2.527335859002931 2.1484e-08 AU
q 2.250486066482054 2.8087e-07 AU
i 16.18069843979352 1.1102e-05 deg
node 50.45486245408641 2.1296e-05 deg
peri 20.22103938650504 4.009e-05 deg
M 185.9776235883847 3.4888e-05 deg
tp 2457709.906984726351
(2016-Nov-17.40698473)
0.0001446 JED
period 1467.549862078773
4.02
1.8713e-05
5.123e-08
d
yr
n .2453068269108504 3.1279e-09 deg/d
Q 2.804185651523808 2.3837e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      22779 days (62.37 yr)  
   first obs. used      1953-02-14  
   last obs. used      2015-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49171  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:20:56  

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
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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