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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 | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189327429579318 3.5799e-08  
a 2.299221752897019 7.1135e-09 au
q 2.025769003156433 8.3768e-08 au
i 6.008322151136175 4.0011e-06 deg
node 350.5156174694976 3.4895e-05 deg
peri 357.8077517408656 3.8318e-05 deg
M 49.14448006289548 1.6075e-05 deg
tp 2458826.663103362983
(2019-Dec-09.16310336)
5.6793e-05 TDB
period 1273.414281913941
3.49
5.9097e-06
1.618e-08
d
yr
n .2827045409439889 1.312e-09 deg/d
Q 2.572674502637605 7.9595e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2166  
   data-arc span      14284 days (39.11 yr)  
   first obs. used      1981-09-22  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:34:39  

Additional Information
 Earth MOID = 1.01919 au 
 Jupiter MOID = 2.81717 au 
 T_jup = 3.576 
[ 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 13.3   n/a MPO337310  
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. 2019-August); 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

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