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249866 (2001 QM165)
Classification: Main-belt Asteroid          SPK-ID: 2249866
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2237511628966858 9.7963e-08  
a 2.666446004592169 2.6667e-08 au
q 2.06982561026345 2.5159e-07 au
i 10.13764028960195 8.4394e-06 deg
node 3.080193041463601 3.4313e-05 deg
peri 19.37911274438644 3.8819e-05 deg
M 77.35751280307646 2.0021e-05 deg
tp 2458658.758584092783
(2019-Jun-24.25858409)
8.4937e-05 TDB
period 1590.367958698193
4.35
2.3858e-05
6.532e-08
d
yr
n .2263627093535515 3.3958e-09 deg/d
Q 3.263066398920889 3.2634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      9064 days (24.82 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:27:48  

Additional Information
 Earth MOID = 1.0752 au 
 Jupiter MOID = 2.22026 au 
 T_jup = 3.325 
[ 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 16.1   n/a MPO454853  
diameter diameter 2.210 km 0.441 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.798 h n/a LCDB (Rev. 2019-August); 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.]
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.158   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249866 (2001 QM165)          Discovered 2001-Aug-24 by NEAT at Haleakala
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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