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JPL Small-Body Database Browser
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71166 (1999 XL203)
Classification: Main-belt Asteroid          SPK-ID: 2071166
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09937996806732026 4.6576e-08  
a 3.173917789342922 3.4703e-08 au
q 2.858493940789722 1.4932e-07 au
i 18.93986517576833 5.4923e-06 deg
node 82.56842332614563 1.5031e-05 deg
peri 187.1669708387471 3.2941e-05 deg
M 57.06776424519114 3.2658e-05 deg
tp 2458673.098778955372
(2019-Jul-08.59877896)
0.00018558 TDB
period 2065.341811353651
5.65
3.3873e-05
9.274e-08
d
yr
n .1743052883648598 2.8587e-09 deg/d
Q 3.48934163789612 3.8151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      950  
   data-arc span      8456 days (23.15 yr)  
   first obs. used      1996-05-14  
   last obs. used      2019-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51009  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:21:46  

Additional Information
 Earth MOID = 1.84336 au 
 Jupiter MOID = 1.60942 au 
 T_jup = 3.110 
[ 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 13.6   n/a MPO449449  
diameter diameter 11.408 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71166 (1999 XL203)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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