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243380 (2008 XN55)
Classification: Outer Main-belt Asteroid          SPK-ID: 2243380
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08480309921210252 8.5086e-08  
a 3.246473176784778 5.7958e-08 au
q 2.971162189884469 2.8311e-07 au
i 9.527910546329624 6.3818e-06 deg
node 121.6940125554252 5.8657e-05 deg
peri 227.9142789193553 7.066e-05 deg
M 54.77369123194058 4.1446e-05 deg
tp 2458275.423433646294
(2018-Jun-05.92343365)		 0.00024607 TDB
period 2136.56522420185
5.85		 5.7215e-05
1.566e-07		 d
yr
n .168494739089692 4.5121e-09 deg/d
Q 3.521784163685087 6.2873e-08 au
   Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      6615 days (18.11 yr)  
   first obs. used      2000-09-04  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62124  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:10:33  

Additional Information
 Earth MOID = 1.97307 au 
 Jupiter MOID = 1.85687 au 
 T_jup = 3.155 
[ 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 15.2   n/a MPO454785  
diameter diameter 4.599 km 1.333 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243380 (2008 XN55)          Discovered 2008-Dec-03 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2008 XN55 = 2006 SV135 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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