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102906 (1999 XJ18)
Classification: Main-belt Asteroid          SPK-ID: 2102906
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696546316936562 4.8737e-08  
a 2.408492395414605 8.2461e-09 au
q 1.999880505133568 1.1795e-07 au
i 3.33487863942924 5.4134e-06 deg
node 33.74330792648782 5.5073e-05 deg
peri 10.90347724750104 5.638e-05 deg
M 218.4473015801156 1.2146e-05 deg
tp 2459737.324091700930
(2022-Jun-06.82409170)		 4.7519e-05 TDB
period 1365.263079896096
3.74		 7.0115e-06
1.92e-08		 d
yr
n .2636854429751355 1.3542e-09 deg/d
Q 2.817104285695641 9.6451e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      7568 days (20.72 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52195  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:56  

Additional Information
 Earth MOID = 1.00814 au 
 Jupiter MOID = 2.57695 au 
 T_jup = 3.499 
[ 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 15.37   n/a E2021B55  
diameter diameter 4.896 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102906 (1999 XJ18)          Discovered 1999-Dec-03 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XJ18 = 2001 FF28 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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