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243374 (2008 XW4)
Classification: Main-belt Asteroid          SPK-ID: 2243374
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549948187152068 9.2769e-08  
a 3.121586841396501 3.4691e-08 au
q 2.637757054810475 3.0155e-07 au
i 15.4036926116424 9.8186e-06 deg
node 292.0043953026328 2.2715e-05 deg
peri 228.3141603863489 3.3409e-05 deg
M 344.2732806573363 2.5186e-05 deg
tp 2459088.502942698416
(2020-Aug-27.00294270)
0.00014141 TDB
period 2014.473500870882
5.52
3.3581e-05
9.194e-08
d
yr
n .1787067438933138 2.979e-09 deg/d
Q 3.605416627982527 4.0068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      8975 days (24.57 yr)  
   first obs. used      1995-09-23  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 12:48:08  

Additional Information
 Earth MOID = 1.67558 au 
 Jupiter MOID = 1.59743 au 
 T_jup = 3.142 
[ 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 14.8   n/a MPO470595  
diameter diameter 3.809 km 0.835 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243374 (2008 XW4)          Discovered 2008-Dec-03 by LINEAR at Socorro
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2008 XW4 = 1995 SM35 = 2007 UM7 = 2007 VC300 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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