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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357593794850294 4.4648e-08  
a 2.250815385894722 8.2398e-09 au
q 1.945246085770298 9.9533e-08 au
i 5.888484280090829 5.5634e-06 deg
node 338.6430578092168 3.7468e-05 deg
peri 155.4033989602546 4.1265e-05 deg
M 250.4148924122911 1.7409e-05 deg
tp 2458975.954468294463
(2020-May-06.45446829)		 6.0261e-05 TDB
period 1233.412199534735
3.38		 6.7729e-06
1.854e-08		 d
yr
n .2918732278923449 1.6027e-09 deg/d
Q 2.556384686019146 9.3584e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1042  
   data-arc span      10869 days (29.76 yr)  
   first obs. used      1990-03-05  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54227  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:24:51  

Additional Information
 Earth MOID = .961203 au 
 Jupiter MOID = 2.4733 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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