MORGAN INTERSTELLAR HOLDINGS (STAR SYSTEMS)
From Dome of the Sky http://einstein.stcloudstate.edu/Dome/
Propus (Procyon):
Distance (Light Years) 11.41 ± 0.04
Visual Magnitude 0.4
Color (B-V) 0.42
Names For This Star
Procyon is the Greek name for Alpha Canis Minoris from the earliest times. In English the meaning of the Greek roots would be something like "Before (or in Front of?) the Dog." The star was sometimes referred to in Latin as Antecanis, which, according to Allen is equivalent to "Procyon".
Other names for the star are Elgomaisa or Algomeysa which are derived from the Arabic name Al Shi'ra Shamiyyah, meaning "The Northern Sirius."
Description of the Star
Procyon is a yellowish F5IV-V subgiant to main sequence star 7 times as luminous as the sun and with twice the sun's diameter.
Procyon is a binary star system with the bright star as the primary. Procyon B is a 10th magnitude star separated by about 4.5 arc sec from the A star, that is, about 16 AU away from the star. The orbital period is 40.65 years.
Other Designations For This Star
Flamsteed
10 Canis Minoris
Hipparcos Identifier (HIP Number)
37279
Harvard Revised (HR Number)
2943
Henry Draper Catalog (HD Number)
61421
Bonner Durchmusterung (BD Number)
BD+05 1739
Smithsonian Astrophysical
Observatory compendium (SAO Number) 115756
Fundamental Katalog (FK5 Number)
291
Castor (Yeah, that IS Latin for Beaver):
Distance (Light Years) 51.5 ± 1.0
Visual Magnitude 1.58
Color (B-V) 0.03
Names For This Star
The name Castor also identifies the mortal brother of the Gemini twins. The name is Greek.
This star was also known as Apollo to the ancient Greeks.
Description of the Star
Viewed through a small telescope, Castor appears to be a double star. The two components A and B are of magnitude 2.0 and 2.8 (see Burnham). There is however a dim third C component to the system. A and B revolve around their common center of mass with a period of four or five hundred years. The separation between the stars is about 100AU, that is about 25% more than the diameter of the orbit of planet Pluto.
C is separated from A and B by 73 arc seconds, corresponding to a projected distance of 1200 AU. According to Burnham, the period of the orbit of C about A and B probably exceeds 10,000 years.
Spectral Types
The The Bright Star Catalog lists Castor A as A1V, that is, a white main sequence star. B is A5m, that is a somewhat smaller and cooler main sequence star. C is of spectral type M1V, that is, a red main sequence dwarf.
Close Binary Stars
Each of the components of Castor proves to be a close binary star. Castor A consists of two almost identical main sequence stars of spectral type A in a rather eccentric elliptical orbit with a period of 9.2 days. The separation between the stars is about four million miles. Each star is twice the diameter of the sun and 12 times its luminosity according to Burnham. The total mass of the pair is 3.2 times the mass of the sun.
Castor B consists of two stars revolving in a circular orbit with a period of 2.9 days. Both stars are of type A5 according to Burnham. Each star is about 1.5 times the diameter of the sun and 6 times its luminosity. The total mass of the pair is 2.3 solar masses.
Castor C consists of two stars revolving in an orbit almost edge-on to our line of sight. The two stars are separated by about 1.67 million miles and orbit with a period of 19.5 hours. Each star has about 2.5% of the luminosity of the sun, about 0.6 times the mass of the sun, and 0.7 to 0.8 times the diameter.
Other Designations For This Star
Flamsteed
66 Geminorum
Hipparcos Identifier (HIP Number)
36850
Harvard Revised (HR Number)
2891
Henry Draper Catalog (HD Number)
60179
Bonner Durchmusterung (BD Number)
BD+32 1581
Smithsonian Astrophysical
Observatory compendium (SAO Number)
Fundamental Katalog (FK5 Number)
Pollux:
Distance (Light Years) 33.7 ± 0.3
Visual Magnitude 1.16
Color (B-V) 1
Names For This Star
The name of the star Pollux is Latin. This represents the immortal twin. In Greek, he was known as Polydeuces. An alternative name for the star is Hercules, the Latinized version of Heracles, who was the great hero who accomplished the Twelve Labors.
Description of the Star
According to Burnham, Pollux is the 14th brightest star in the sky. The star is an orange K0IIIb giant star having a luminosity about 30 times that of the sun.
The spectral type of the star implies a temperature of about 4500 K, a mass of maybe 4 times that of the sun, and a diameter about 16 times that of the sun.
Other Designations For This Star
Flamsteed
78 Geminorum
Hipparcos Identifier (HIP Number)
37826
Harvard Revised (HR Number)
2990
Henry Draper Catalog (HD Number)
62509
Bonner Durchmusterung (BD Number)
BD+28 1463
Smithsonian Astrophysical
Observatory compendium (SAO Number) 79666
Fundamental Katalog (FK5 Number)
295
From Dome of the Sky http://einstein.stcloudstate.edu/Dome/
Propus (Procyon):
Distance (Light Years) 11.41 ± 0.04
Visual Magnitude 0.4
Color (B-V) 0.42
Names For This Star
Procyon is the Greek name for Alpha Canis Minoris from the earliest times. In English the meaning of the Greek roots would be something like "Before (or in Front of?) the Dog." The star was sometimes referred to in Latin as Antecanis, which, according to Allen is equivalent to "Procyon".
Other names for the star are Elgomaisa or Algomeysa which are derived from the Arabic name Al Shi'ra Shamiyyah, meaning "The Northern Sirius."
Description of the Star
Procyon is a yellowish F5IV-V subgiant to main sequence star 7 times as luminous as the sun and with twice the sun's diameter.
Procyon is a binary star system with the bright star as the primary. Procyon B is a 10th magnitude star separated by about 4.5 arc sec from the A star, that is, about 16 AU away from the star. The orbital period is 40.65 years.
Other Designations For This Star
Flamsteed
10 Canis Minoris
Hipparcos Identifier (HIP Number)
37279
Harvard Revised (HR Number)
2943
Henry Draper Catalog (HD Number)
61421
Bonner Durchmusterung (BD Number)
BD+05 1739
Smithsonian Astrophysical
Observatory compendium (SAO Number) 115756
Fundamental Katalog (FK5 Number)
291
Castor (Yeah, that IS Latin for Beaver):
Distance (Light Years) 51.5 ± 1.0
Visual Magnitude 1.58
Color (B-V) 0.03
Names For This Star
The name Castor also identifies the mortal brother of the Gemini twins. The name is Greek.
This star was also known as Apollo to the ancient Greeks.
Description of the Star
Viewed through a small telescope, Castor appears to be a double star. The two components A and B are of magnitude 2.0 and 2.8 (see Burnham). There is however a dim third C component to the system. A and B revolve around their common center of mass with a period of four or five hundred years. The separation between the stars is about 100AU, that is about 25% more than the diameter of the orbit of planet Pluto.
C is separated from A and B by 73 arc seconds, corresponding to a projected distance of 1200 AU. According to Burnham, the period of the orbit of C about A and B probably exceeds 10,000 years.
Spectral Types
The The Bright Star Catalog lists Castor A as A1V, that is, a white main sequence star. B is A5m, that is a somewhat smaller and cooler main sequence star. C is of spectral type M1V, that is, a red main sequence dwarf.
Close Binary Stars
Each of the components of Castor proves to be a close binary star. Castor A consists of two almost identical main sequence stars of spectral type A in a rather eccentric elliptical orbit with a period of 9.2 days. The separation between the stars is about four million miles. Each star is twice the diameter of the sun and 12 times its luminosity according to Burnham. The total mass of the pair is 3.2 times the mass of the sun.
Castor B consists of two stars revolving in a circular orbit with a period of 2.9 days. Both stars are of type A5 according to Burnham. Each star is about 1.5 times the diameter of the sun and 6 times its luminosity. The total mass of the pair is 2.3 solar masses.
Castor C consists of two stars revolving in an orbit almost edge-on to our line of sight. The two stars are separated by about 1.67 million miles and orbit with a period of 19.5 hours. Each star has about 2.5% of the luminosity of the sun, about 0.6 times the mass of the sun, and 0.7 to 0.8 times the diameter.
Other Designations For This Star
Flamsteed
66 Geminorum
Hipparcos Identifier (HIP Number)
36850
Harvard Revised (HR Number)
2891
Henry Draper Catalog (HD Number)
60179
Bonner Durchmusterung (BD Number)
BD+32 1581
Smithsonian Astrophysical
Observatory compendium (SAO Number)
Fundamental Katalog (FK5 Number)
Pollux:
Distance (Light Years) 33.7 ± 0.3
Visual Magnitude 1.16
Color (B-V) 1
Names For This Star
The name of the star Pollux is Latin. This represents the immortal twin. In Greek, he was known as Polydeuces. An alternative name for the star is Hercules, the Latinized version of Heracles, who was the great hero who accomplished the Twelve Labors.
Description of the Star
According to Burnham, Pollux is the 14th brightest star in the sky. The star is an orange K0IIIb giant star having a luminosity about 30 times that of the sun.
The spectral type of the star implies a temperature of about 4500 K, a mass of maybe 4 times that of the sun, and a diameter about 16 times that of the sun.
Other Designations For This Star
Flamsteed
78 Geminorum
Hipparcos Identifier (HIP Number)
37826
Harvard Revised (HR Number)
2990
Henry Draper Catalog (HD Number)
62509
Bonner Durchmusterung (BD Number)
BD+28 1463
Smithsonian Astrophysical
Observatory compendium (SAO Number) 79666
Fundamental Katalog (FK5 Number)
295
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