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172195 (2002 QK9)
Classification: Main-belt Asteroid          SPK-ID: 2172195
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07820344689164827 7.9135e-08  
a 2.667954481635487 2.6402e-08 au
q 2.459311245021572 2.2233e-07 au
i 8.61541220262955 6.2816e-06 deg
node 29.31637369169948 4.6237e-05 deg
peri 291.9428120775465 6.0359e-05 deg
M 39.07860679155921 3.6177e-05 deg
tp 2458827.716358863059
(2019-Dec-10.21635886)
0.00015992 TDB
period 1591.717717601286
4.36
2.3628e-05
6.469e-08
d
yr
n .2261707562962351 3.3573e-09 deg/d
Q 2.876597718249403 2.8467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      7131 days (19.52 yr)  
   first obs. used      1998-10-11  
   last obs. used      2018-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61283  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 01:47:16  

Additional Information
 Earth MOID = 1.46341 au 
 Jupiter MOID = 2.36601 au 
 T_jup = 3.362 
[ 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 15.9   n/a MPO446068  
diameter diameter 3.045 km 0.744 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172195 (2002 QK9)          Discovered 2002-Aug-19 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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