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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09239788637775267 1.6905e-08  
a 2.332768852962701 6.9116e-09 au
q 2.117225941541093 3.9529e-08 au
i 10.48384812815463 5.1802e-07 deg
node 67.89244821756358 3.5647e-06 deg
peri 20.91650791109556 8.9561e-06 deg
M 124.0894242379375 6.8102e-06 deg
tp 2458751.921703260317
(2019-Sep-25.42170326)
2.4525e-05 TDB
period 1301.385575910462
3.56
5.7837e-06
1.583e-08
d
yr
n .276628238904631 1.2294e-09 deg/d
Q 2.548311764384309 7.5502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2393  
   data-arc span      25317 days (69.31 yr)  
   first obs. used      1951-11-08  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:17:42  

Additional Information
 Earth MOID = 1.13587 au 
 Jupiter MOID = 2.64737 au 
 T_jup = 3.542 
[ 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 13.21   n/a E2021B10  
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. 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:
[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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