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17453 (1990 RQ9)
Classification: Main-belt Asteroid          SPK-ID: 2017453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1955241554678819 2.1109e-08  
a 2.289001684507218 7.1274e-09 au
q 1.841446563279385 4.8172e-08 au
i 5.830160431665433 8.378e-07 deg
node 208.6803154299759 1.3995e-05 deg
peri 135.0978555607469 1.5737e-05 deg
M 261.8130700843301 6.3472e-06 deg
tp 2459545.499746013132
(2021-Nov-26.99974601)
2.3316e-05 TDB
period 1264.933211287891
3.46
5.908e-06
1.618e-08
d
yr
n .2846000063777804 1.3293e-09 deg/d
Q 2.736556805735051 8.521e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      12625 days (34.57 yr)  
   first obs. used      1986-06-26  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50226  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:03:42  

Additional Information
 Earth MOID = .83803 au 
 Jupiter MOID = 2.69834 au 
 T_jup = 3.567 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.34   n/a E2021B10  
diameter diameter 3.584 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.379   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17453 (1990 RQ9)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RQ9 = 1999 CN69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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