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173339 (1999 XL16)
Classification: Main-belt Asteroid          SPK-ID: 2173339
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .280116536382871 4.9087e-08  
a 2.43389957008414 1.4309e-08 au
q 1.752124052608412 1.18e-07 au
i 11.44678787902155 4.3856e-06 deg
node 75.23675795405975 2.1287e-05 deg
peri 281.3794642422093 2.2294e-05 deg
M 186.4403751519266 8.4368e-06 deg
tp 2459669.149631817055
(2022-Mar-30.64963182)
3.639e-05 TDB
period 1386.923183688893
3.80
1.2231e-05
3.349e-08
d
yr
n .2595673677056027 2.2891e-09 deg/d
Q 3.115675087559868 1.8318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      7495 days (20.52 yr)  
   first obs. used      1999-10-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:27:07  

Additional Information
 Earth MOID = .791961 au 
 Jupiter MOID = 2.44274 au 
 T_jup = 3.425 
[ 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 16.0   n/a MPO412970  
diameter diameter 4.453 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173339 (1999 XL16)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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