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JPL Small-Body Database Browser
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249500 (2009 XL22)
Classification: Main-belt Asteroid          SPK-ID: 2249500
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04250421030999745 5.8376e-08  
a 3.12989554041723 3.6883e-08 au
q 2.996861802119013 1.944e-07 au
i 9.849201343475389 5.9673e-06 deg
node 93.15812638097643 4.2224e-05 deg
peri 39.62633872552841 0.00010147 deg
M 226.8908629054666 9.2159e-05 deg
tp 2459348.322553932574
(2021-May-13.82255393)
0.00052244 TDB
period 2022.521708818013
5.54
3.5751e-05
9.788e-08
d
yr
n .1779956172684982 3.1463e-09 deg/d
Q 3.262929278715448 3.8451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      7649 days (20.94 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:48:07  

Additional Information
 Earth MOID = 2.01984 au 
 Jupiter MOID = 1.83234 au 
 T_jup = 3.189 
[ 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 MPO352522  
diameter diameter 4.967 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249500 (2009 XL22)          Discovered 2009-Dec-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 XL22 = 1998 YY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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