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JPL Small-Body Database Browser
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193397 (2000 WQ9)
Classification: Main-belt Asteroid          SPK-ID: 2193397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195560737716487 5.5603e-08  
a 2.60305303271226 1.7669e-08 au
q 2.093998061319912 1.5034e-07 au
i 5.770535587145397 5.345e-06 deg
node 82.50942470970462 5.2698e-05 deg
peri 66.35805344065825 5.4252e-05 deg
M 86.96108787051294 1.1841e-05 deg
tp 2458229.951197178781
(2018-Apr-21.45119718)
4.9913e-05 TDB
period 1533.991493002835
4.20
1.5619e-05
4.276e-08
d
yr
n .2346818751225856 2.3894e-09 deg/d
Q 3.112108004104608 2.1124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      539  
   data-arc span      6348 days (17.38 yr)  
   first obs. used      2000-11-22  
   last obs. used      2018-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5716  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:58:17  

Additional Information
 Earth MOID = 1.11399 au 
 Jupiter MOID = 1.91914 au 
 T_jup = 3.379 
[ 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 15.9   n/a MPO281024  
diameter diameter 1.821 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.405 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.307   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

193397 (2000 WQ9)          Discovered 2000-Nov-22 by Bohyunsan at Bohyunsan
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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