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226998 (2004 XW78)
Classification: Main-belt Asteroid          SPK-ID: 2226998
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624794922730386 6.1074e-08  
a 2.962086021807926 3.0056e-08 au
q 2.480807788915509 1.8839e-07 au
i 2.119343738009376 6.9485e-06 deg
node 219.1110823420305 0.00011825 deg
peri 218.3278391624867 0.00012011 deg
M 13.54188428041876 1.9422e-05 deg
tp 2458930.455905636233
(2020-Mar-21.95590564)
0.0001 TDB
period 1862.065385348022
5.10
2.8341e-05
7.759e-08
d
yr
n .1933337050528521 2.9426e-09 deg/d
Q 3.443364254700342 3.4939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      7325 days (20.05 yr)  
   first obs. used      2000-01-05  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50012  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 06:01:27  

Additional Information
 Earth MOID = 1.49662 au 
 Jupiter MOID = 1.81782 au 
 T_jup = 3.245 
[ 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 15.6   n/a MPO418211  
diameter diameter 4.323 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226998 (2004 XW78)          Discovered 2004-Dec-10 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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