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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2797904821104597 4.9108e-08  
a 2.434566816758505 1.4495e-08 au
q 1.753398193367515 1.1808e-07 au
i 11.44703074646618 4.5885e-06 deg
node 75.24178626682794 2.1369e-05 deg
peri 281.4052763516783 2.2501e-05 deg
M 82.61174663557698 7.9838e-06 deg
tp 2458282.102038966269
(2018-Jun-12.60203897)
2.9449e-05 TDB
period 1387.493554370393
3.80
1.2391e-05
3.392e-08
d
yr
n .2594606647836705 2.3172e-09 deg/d
Q 3.115735440149494 1.8551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      7017 days (19.21 yr)  
   first obs. used      1999-10-21  
   last obs. used      2019-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .532  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:25:15  

Additional Information
 Earth MOID = .792411 au 
 Jupiter MOID = 2.43921 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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