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JPL Small-Body Database Browser
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413387 (2004 QS18)
Classification: Main-belt Asteroid          SPK-ID: 2413387
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2185168006317613 1.2663e-07  
a 2.198402857649536 1.5079e-08 au
q 1.718014898696238 2.8111e-07 au
i 4.043273875278256 1.4266e-05 deg
node 331.6685408936089 7.6891e-05 deg
peri 327.1242149524215 8.4571e-05 deg
M 325.2914359030033 2.5174e-05 deg
tp 2459115.287208151272
(2020-Sep-22.78720815)
8.3032e-05 TDB
period 1190.582094349265
3.26
1.2249e-05
3.354e-08
d
yr
n .3023731011146818 3.1109e-09 deg/d
Q 2.678790816602834 1.8374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      109  
   data-arc span      4769 days (13.06 yr)  
   first obs. used      2004-08-10  
   last obs. used      2017-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60741  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 11:59:03  

Additional Information
 Earth MOID = .704149 au 
 Jupiter MOID = 2.54769 au 
 T_jup = 3.632 
[ 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 18.2   n/a MPO419032  
diameter diameter 1.278 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

413387 (2004 QS18)          Discovered 2004-Aug-21 by CSS at Catalina
Reference: Last Updated: 2014-11-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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