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5226 Pollack (1983 WL)
Classification: Main-belt Asteroid          SPK-ID: 2005226
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09243440753321373 3.936e-08  
a 2.333280961059288 8.3408e-09 au
q 2.117605517815245 9.3566e-08 au
i 10.48410310083685 4.8599e-06 deg
node 67.89834188381018 2.1891e-05 deg
peri 21.14898934877858 3.4281e-05 deg
M 317.928587491351 2.576e-05 deg
tp 2458752.636554155086
(2019-Sep-26.13655416)
9.3323e-05 TDB
period 1301.81413530082
3.56
6.9804e-06
1.911e-08
d
yr
n .2765371724257795 1.4828e-09 deg/d
Q 2.548956404303331 9.1117e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      24829 days (67.98 yr)  
   first obs. used      1951-11-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45038  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:43:56  

Additional Information
 Earth MOID = 1.13663 au 
 Jupiter MOID = 2.64779 au 
 T_jup = 3.541 
[ 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 13.2   n/a MPO452239  
diameter diameter 5.509 km 0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.725 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:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.279   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5226 Pollack (1983 WL)          Discovered 1983-Nov-28 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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