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JPL Small-Body Database Browser
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173358 (1999 YL12)
Classification: Main-belt Asteroid          SPK-ID: 2173358
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04521232898946204 6.9251e-08  
a 2.585797725041165 2.3121e-08 au
q 2.468887787596401 1.676e-07 au
i 27.68188204449753 4.9218e-06 deg
node 264.531878351031 1.5625e-05 deg
peri 1.108958654443427 8.6798e-05 deg
M 52.32432502864523 8.4656e-05 deg
tp 2458379.754741254555
(2018-Sep-18.25474125)
0.0003572 TDB
period 1518.763846544697
4.16
2.037e-05
5.577e-08
d
yr
n .2370348759743177 3.1792e-09 deg/d
Q 2.702707662485929 2.4166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      508  
   data-arc span      7328 days (20.06 yr)  
   first obs. used      1999-11-14  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47546  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:02:34  

Additional Information
 Earth MOID = 1.45274 au 
 Jupiter MOID = 2.39941 au 
 T_jup = 3.260 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO502965  
diameter diameter 5.785 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173358 (1999 YL12)          Discovered 1999-Dec-27 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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