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249857 (2001 QL104)
Classification: Main-belt Asteroid          SPK-ID: 2249857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3218767341447758 4.0976e-08  
a 2.701228113034245 1.0624e-08 au
q 1.831765629830727 1.086e-07 au
i 7.140660920329433 4.9232e-06 deg
node 339.3572154892931 3.764e-05 deg
peri 48.9324833226974 3.8776e-05 deg
M 328.0918768289093 7.0522e-06 deg
tp 2458744.227237201630
(2019-Sep-17.72723720)
3.1914e-05 TDB
period 1621.587240187971
4.44
9.5667e-06
2.619e-08
d
yr
n .2220047069180623 1.3097e-09 deg/d
Q 3.570690596237763 1.4044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      461  
   data-arc span      9416 days (25.78 yr)  
   first obs. used      1994-02-16  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54986  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:48:59  

Additional Information
 Earth MOID = .844589 au 
 Jupiter MOID = 1.94709 au 
 T_jup = 3.280 
[ 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 16.4   n/a MPO367674  
diameter diameter 2.842 km 0.764 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 29.309 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.]
geometric albedo albedo 0.066   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249857 (2001 QL104)          Discovered 2001-Aug-20 by LINEAR at Socorro
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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