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43166 (1999 XO156)
Classification: Main-belt Asteroid          SPK-ID: 2043166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1258775600931816 3.3222e-08  
a 2.741094114105739 1.2515e-08 au
q 2.396051875036327 9.352e-08 au
i 4.644978467976276 3.5508e-06 deg
node 135.5767196820543 5.9592e-05 deg
peri 210.9994942439304 6.2888e-05 deg
M 308.185053930624 2.1965e-05 deg
tp 2459439.081572763317
(2021-Aug-12.58157276)
0.00010182 TDB
period 1657.617593190102
4.54
1.1352e-05
3.108e-08
d
yr
n .2171791621173472 1.4874e-09 deg/d
Q 3.08613635317515 1.4091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1257  
   data-arc span      9051 days (24.78 yr)  
   first obs. used      1995-11-27  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55183  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:16:49  

Additional Information
 Earth MOID = 1.38836 au 
 Jupiter MOID = 2.31054 au 
 T_jup = 3.334 
[ 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 14.43   n/a E2021B10  
diameter diameter 6.589 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 51.997 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.085   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43166 (1999 XO156)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XO156 = 1998 QL61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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