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18393 (1992 QB)
Classification: Main-belt Asteroid          SPK-ID: 2018393
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2261965522127272 3.8134e-08  
a 2.370060185233616 1.1335e-08 au
q 1.833960742797115 8.776e-08 au
i 24.11339580913354 5.3348e-06 deg
node 55.5995764352732 1.0862e-05 deg
peri 243.5715433552121 1.8721e-05 deg
M 225.1766232855928 1.8565e-05 deg
tp 2459499.614501300418
(2021-Oct-12.11450130)
7.055e-05 TDB
period 1332.715622816394
3.65
9.5603e-06
2.617e-08
d
yr
n .2701251443569192 1.9378e-09 deg/d
Q 2.906159627670117 1.3898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1313  
   data-arc span      16699 days (45.72 yr)  
   first obs. used      1974-08-22  
   last obs. used      2020-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47996  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:15:16  

Additional Information
 Earth MOID = .919751 au 
 Jupiter MOID = 2.44763 au 
 T_jup = 3.396 
[ 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 14.3   n/a MPO400186  
diameter diameter 3.855 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.248   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18393 (1992 QB)          Discovered 1992-Aug-19 by McNaught, R. H. at Siding Spring
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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