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71172 (1999 XK206)
Classification: Main-belt Asteroid          SPK-ID: 2071172
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04124974226236174 3.7764e-08  
a 3.099226774816688 2.3514e-08 au
q 2.971384469142889 1.2274e-07 au
i 11.17197493818938 6.301e-06 deg
node 34.42337760072265 2.8606e-05 deg
peri 38.00949952814334 9.1983e-05 deg
M 302.9507813837781 8.7888e-05 deg
tp 2459316.309841384827
(2021-Apr-11.80984138)
0.00048713 TDB
period 1992.86766157757
5.46
2.268e-05
6.209e-08
d
yr
n .1806442078120838 2.0559e-09 deg/d
Q 3.227069080490487 2.4484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56228  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:41:35  

Additional Information
 Earth MOID = 1.99186 au 
 Jupiter MOID = 1.93131 au 
 T_jup = 3.192 
[ 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 14.0   n/a MPO449449  
diameter diameter 8.579 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71172 (1999 XK206)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XK206 = 1998 SL145 = 1998 UF39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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