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14813 (1981 QW2)
Classification: Main-belt Asteroid          SPK-ID: 2014813
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1772700641796926 2.7172e-08  
a 2.211179375037726 5.9375e-09 au
q 1.819203465311976 6.2571e-08 au
i 3.724952933224987 3.2706e-06 deg
node 40.54189741257896 4.2478e-05 deg
peri 272.0001224903206 4.3629e-05 deg
M 6.166946035052137 9.4588e-06 deg
tp 2459179.926791079193
(2020-Nov-26.42679108)
3.1544e-05 TDB
period 1200.976167035329
3.29
4.8373e-06
1.324e-08
d
yr
n .2997561566010744 1.2074e-09 deg/d
Q 2.603155284763477 6.99e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1840  
   data-arc span      14268 days (39.06 yr)  
   first obs. used      1981-08-23  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:39:59  

Additional Information
 Earth MOID = .807911 au 
 Jupiter MOID = 2.66616 au 
 T_jup = 3.634 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.02   n/a E2020-QM5  
diameter diameter 2.344 km 0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.977 h n/a LCDB (Rev. 2020-October); 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 0.613   0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14813 (1981 QW2)          Discovered 1981-Aug-23 by Debehogne, H. at La Silla
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 QW2 = 1991 RS26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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