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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2235074271748876 9.8014e-08  
a 2.665881098363804 2.8817e-08 au
q 2.070036872914347 2.5205e-07 au
i 10.13810400151154 8.8745e-06 deg
node 3.09016008115027 3.4371e-05 deg
peri 19.37588150559806 3.91e-05 deg
M 346.8100830551792 2.0695e-05 deg
tp 2458658.750431941226
(2019-Jun-24.25043194)
9.2071e-05 TDB
period 1589.862588715974
4.35
2.5778e-05
7.058e-08
d
yr
n .2264346633193928 3.6714e-09 deg/d
Q 3.261725323813262 3.5257e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      8987 days (24.61 yr)  
   first obs. used      1995-03-27  
   last obs. used      2019-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56887  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:48:59  

Additional Information
 Earth MOID = 1.07465 au 
 Jupiter MOID = 2.21845 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-January); 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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