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49905 (1999 XU165)
Classification: Main-belt Asteroid          SPK-ID: 2049905
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356598789541505 4.1089e-08  
a 2.251038098336439 7.7998e-09 au
q 1.945662542394936 9.2415e-08 au
i 5.888490663344802 5.1446e-06 deg
node 338.6341222076277 3.6716e-05 deg
peri 155.3241828916877 4.0269e-05 deg
M 7.223134198988808 1.6291e-05 deg
tp 2458975.748821744514
(2020-May-06.24882174)		 5.5796e-05 TDB
period 1233.59526855008
3.38		 6.4115e-06
1.755e-08		 d
yr
n .2918299130825381 1.5168e-09 deg/d
Q 2.556413654277941 8.8579e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1143  
   data-arc span      11031 days (30.20 yr)  
   first obs. used      1990-03-05  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53052  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:14  

Additional Information
 Earth MOID = .961212 au 
 Jupiter MOID = 2.47192 au 
 T_jup = 3.608 
[ 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 15.3   n/a MPO452849  
diameter diameter 2.125 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.247   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49905 (1999 XU165)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XU165 = 1990 EG8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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