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249878 (2001 QY246)
Classification: Main-belt Asteroid          SPK-ID: 2249878
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2644708262620608 4.6858e-08  
a 2.741704702737777 1.0611e-08 au
q 2.016603794638139 1.3007e-07 au
i 11.30972925405927 5.9055e-06 deg
node 14.01252999727461 2.2211e-05 deg
peri 13.7388547487411 2.4847e-05 deg
M 33.38564956058904 9.7738e-06 deg
tp 2458846.724633074637
(2019-Dec-29.22463307)
4.4734e-05 TDB
period 1658.171484507543
4.54
9.6263e-06
2.636e-08
d
yr
n .2171066161512938 1.2604e-09 deg/d
Q 3.466805610837414 1.3417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      6756 days (18.50 yr)  
   first obs. used      2001-08-05  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:02  

Additional Information
 Earth MOID = 1.02262 au 
 Jupiter MOID = 2.008 au 
 T_jup = 3.271 
[ 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 15.9   n/a MPO503177  
diameter diameter 1.999 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249878 (2001 QY246)          Discovered 2001-Aug-24 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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