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6581 Sobers (1981 SO)
Classification: Main-belt Asteroid          SPK-ID: 2006581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190573083999245 1.5533e-08  
a 2.299703170296207 6.1995e-09 au
q 2.025906700721967 3.5965e-08 au
i 6.00861183613407 2.8689e-07 deg
node 350.5081812859254 1.1235e-05 deg
peri 357.9365052774625 1.7356e-05 deg
M 160.9309266104018 8.1718e-06 deg
tp 2458827.066368119864
(2019-Dec-09.56636812)
2.851e-05 TDB
period 1273.814249346397
3.49
5.1509e-06
1.41e-08
d
yr
n .2826157739911597 1.1428e-09 deg/d
Q 2.573499639870446 6.9375e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2660  
   data-arc span      14504 days (39.71 yr)  
   first obs. used      1981-09-22  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 00:38:57  

Additional Information
 Earth MOID = 1.01853 au 
 Jupiter MOID = 2.81634 au 
 T_jup = 3.576 
[ 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 13.40   n/a MPCxxxxx  
diameter diameter 5.716 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.6338 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.311   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6581 Sobers           Discovered 1981 Sept. 22 by A. Mrkos at Klet.
Named in honor of Garfield St. Aubrun (Gary) Sobers (b. 1936), West Indian cricketer, considered by many as the best all-rounder of all time. As a batsman, Sobers scored 8032 runs in 160 Test innings, including 26 centuries and 365 (not out) against Pakistan in 1957-1958. As a bowler, he took 235 Test wickets, averaging one wicket for each 34 runs given up, and was also an excellent close-fielder. Name suggested by G. V. Williams, who made the identifications involving this object.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 1981 SO = 1990 EL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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