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226735 (2004 QP9)
Classification: Main-belt Asteroid          SPK-ID: 2226735
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3155970410382938 4.9461e-08  
a 2.788877448059636 2.0649e-08 au
q 1.908715977633587 1.4134e-07 au
i 6.855633772337168 6.9537e-06 deg
node 8.326349082733261 4.8987e-05 deg
peri 28.47028990010641 5.0128e-05 deg
M 101.6764722139759 1.2903e-05 deg
tp 2458520.036344495630
(2019-Feb-05.53634450)
5.7593e-05 TDB
period 1701.149855175619
4.66
1.8893e-05
5.173e-08
d
yr
n .2116215681438807 2.3503e-09 deg/d
Q 3.669038918485685 2.7166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      6918 days (18.94 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:57:10  

Additional Information
 Earth MOID = .918754 au 
 Jupiter MOID = 1.80263 au 
 T_jup = 3.245 
[ 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 16.3   n/a MPO352400  
diameter diameter 3.187 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226735 (2004 QP9)          Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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