Matrix Software Home
Your Shopping Cart  |          
Matrix Software Home
Blue*Star Pro
Web Service
Win*Star V6.0
NEW Sirius 2.0
NEW Kepler 8.0
Report Pro.
Win*Star Express
NEW Pegasus
KNOW Series
Tarot Personal
Report Personal
Reportes Espaņol
Starter Pack
Report Writers
Jupiter Report
Time Together
Solar Return
Lunar Return
Midpoint Keys
Make Money
Home Business
Pro Package
Home Business

FREE E-Books
Single Reports
Personal Readings
Natal Report
Child Report
Just for Women
Solar Return
Past Lives
Solar Arc
Free Oracle
The Matrix Oracle
Natal Astrology
Fortune Cookie
Electric Almanac
Yes/No Oracle
Word Oracle
Press to view all ^
Astrology Blogs
Ask Astrology
Astro Dialogues
Find an Astrologer
Astro Links
Book Reviews
Celebrity Search
Astro*Talk Bulletin
Free Stuff
Fun Things to Do
NEW Sky Reader
Celebrity Search
Free Desktops
Learn Astrology
Astro Links
Monthly Planets
Today's Chart
Registered User
Matrix Customers
Quick Fixes

On Sale Now
Matrix Software List
Cosmic Patterns Software List

Matrix Astrology Software

  Beginning Astrology                  
  Your Sun Sign                           
  Astrology Articles                     
  Astrology Book Reviews          
  Astro Outline                             
  Visual Astrology                      
    Astrophysical Directions
  Astrology Organizations           

Matrix Software > Learng Astrology > Astrophysical Directions > Solar Neighborhood > The Southern Stream

Learn Astrology

Back to Solar Neighborhood   |   Back to Astrophysical Direction 

The Southern Stream (Sco-Cen Assoc.)

The largest of the near moving clusters and the chief contributor in the Southern Hemisphere to the Local System is the Scorpid-Centaurus association of stars. Charles Jayne points out that this immense loose cluster (stretching from later Libra through late Sagittarius in the Zodiac) must be the origin of the fabled Via Combusta. The entire sign of Scorpio is influenced by the presence of this vast cloud of stars.

The Southern Stream

The Scorpio-Centaurus association is also called The Southern Stream and a stream it is, stretching from New Galactic longitude 243° through 360° and latitude +30° and -30°. The centroid is at 12 = 330°, b2 = +15° and the main body of the cluster stretches from galactic longitudes 314° to 347°.

The 1950.0 position for the centroid of Sco-Cen is:

R. A. Dec. Long. Lat Intersect Iii bii
227°16'05" 227°16'05" 236°05'50" -21°36'60" 229°43'03" 330° |+15

The shape of the cluster is found to be elongated considerably, with the distance between the extreme points in the direction of elongation being about three times its transverse section. The angle between the direction of elongation and the radius vector through the Sun is 52°. It is estimated that between 0.4xl08 and 1.5xl08 years ago, the cluster (which up to that time may have been spherical) was liable to a disturbing force. This force gave it a velocity between 9 and 19 km/sec relative to an imaginary star moving in a circle around the galactic center and coinciding with the center of the cluster at the time of disturbance. The present shape and motion of the cluster are explained by the evolution since this disturbance. The present mean motion of the cluster is found to indicate an initial velocity of 19 km/sec in the direction forming an angle of 87° with the direction of circular motion, that is approximately in the direction outward from the galactic center. The position of the cluster was at that time at the distance 2200 parsecs from the present position of the Sun in the direction of about 59° New Galactic Longitude (Vulpecula-Sagitta direction).

The Southern Stream

Variation with time of the Vertex Direction of Sco-Cen

Copyright (c) 1997-99 Michael Erlewine

Home  |  Software  |  Learn Astrology  |  Free Stuff  |  Privacy Policy  |  Security   |  About Us   |  Contact Us   |  Site Map  |  F.A.Q.

Matrix SoftwareMatrix Software License Agreement