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JPL Small-Body Database Browser
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39203 (2000 XH18)
Classification: Main-belt Asteroid          SPK-ID: 2039203
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05026069472754265 5.44e-08  
a 2.630118472083456 1.8475e-08 au
q 2.497926890460798 1.4033e-07 au
i 13.61915493780707 5.9226e-06 deg
node 302.4563001294781 2.1718e-05 deg
peri 238.8418648471354 5.5296e-05 deg
M 96.16134934585023 5.094e-05 deg
tp 2458584.340855511980
(2019-Apr-10.84085551)
0.00022071 TDB
period 1557.978262938678
4.27
1.6416e-05
4.494e-08
d
yr
n .2310686923968781 2.4347e-09 deg/d
Q 2.762310053706113 1.9404e-08 au
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      7681 days (21.03 yr)  
   first obs. used      1998-04-30  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55243  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:07:09  

Additional Information
 Earth MOID = 1.53154 au 
 Jupiter MOID = 2.31974 au 
 T_jup = 3.359 
[ 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 14.6   n/a MPO474249  
diameter diameter 3.704 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39203 (2000 XH18)          Discovered 2000-Dec-04 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 XH18 = 1999 RF228 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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