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160869 (2001 KM39)
Classification: Main-belt Asteroid          SPK-ID: 2160869
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3608949732396868 3.1532e-08  
a 3.19443169665689 2.3615e-08 au
q 2.041577354975895 9.7236e-08 au
i 24.67278146413516 1.122e-05 deg
node 223.5507155416862 1.1481e-05 deg
peri 111.7724706610393 2.3495e-05 deg
M 79.7228840130133 1.6085e-05 deg
tp 2458538.683615473511
(2019-Feb-24.18361547)
9.1161e-05 TDB
period 2085.39744250093
5.71
2.3125e-05
6.331e-08
d
yr
n .1726289639869641 1.9143e-09 deg/d
Q 4.347286038337885 3.2138e-08 au
  Orbit Determination Parameters
   # obs. used (total)      628  
   data-arc span      10780 days (29.51 yr)  
   first obs. used      1990-07-25  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49815  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:26:51  

Additional Information
 Earth MOID = 1.16269 au 
 Jupiter MOID = 1.91147 au 
 T_jup = 2.957 
[ 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 14.8   n/a MPO273310  
diameter diameter 8.810 km 1.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.916 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.033   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160869 (2001 KM39)          Discovered 2001-May-22 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 2001 KM39 = 1995 KA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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