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268174 (2004 XN31)
Classification: Main-belt Asteroid          SPK-ID: 2268174
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2161099051239648 7.1725e-08  
a 3.164212449147953 4.4386e-08 au
q 2.480394796970521 2.1359e-07 au
i 12.54026890507823 6.579e-06 deg
node 281.3849590981573 3.3997e-05 deg
peri 269.9636144376996 3.6853e-05 deg
M 134.2516617515522 1.6556e-05 deg
tp 2457833.820151313732
(2017-Mar-21.32015131)
8.8002e-05 TDB
period 2055.875822511859
5.63
4.3259e-05
1.184e-07
d
yr
n .1751078523605349 3.6845e-09 deg/d
Q 3.848030101325385 5.3979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6709 days (18.37 yr)  
   first obs. used      2001-06-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:14:28  

Additional Information
 Earth MOID = 1.52024 au 
 Jupiter MOID = 1.52812 au 
 T_jup = 3.131 
[ 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 15.3   n/a MPO494450  
diameter diameter 4.875 km 1.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

268174 (2004 XN31)          Discovered 2004-Dec-09 by CSS at Catalina
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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