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17485 (1991 RP9)
Classification: Main-belt Asteroid          SPK-ID: 2017485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097882255749181 1.6492e-08  
a 2.527350459461801 1.095e-08 au
q 2.249877137111536 4.4527e-08 au
i 16.17107417172691 5.4417e-07 deg
node 50.41128851519631 3.9056e-06 deg
peri 21.29961986867409 1.1336e-05 deg
M 4.406399611868343 1.1615e-05 deg
tp 2459182.537035613019
(2020-Nov-29.03703561)
4.735e-05 TDB
period 1467.562579184973
4.02
9.538e-06
2.611e-08
d
yr
n .2453047012141247 1.5943e-09 deg/d
Q 2.804823781812066 1.2153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1967  
   data-arc span      24866 days (68.08 yr)  
   first obs. used      1953-02-14  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:04:12  

Additional Information
 Earth MOID = 1.26828 au 
 Jupiter MOID = 2.5571 au 
 T_jup = 3.389 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.97   n/a E2021B10  
diameter diameter 6.348 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.365   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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