The star is referred to as HD 319718B with the associated star being referred to as HD 319718A.
The Id of the star in the Henry Draper catalogue is HD319718.
More details on objects' alternative names can be found at Star Names .
The location of the giant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For Pismis 24-1 B (SW), the location is 17h 24m 43.481 and –34° 11` 57.21 .
Pismis 24-1 B (SW) has a spectral type of O4III(f+). This means the star is a blue - white giant star.
Pismis 24-1 B (SW) has an apparent magnitude of 11.10 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -0.41 Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.
The Parallax of the star is given as 0.50 which gives a calculated distance to Pismis 24-1 B (SW) of 6523.27 light years from the Earth or 2000 parsecs. It is about 38,347,860,538,127,382.37 miles from Earth.
The star is roughly 412,526,737.97 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.
A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).
If you were to drive there at about 120 m.p.h. in a car with an infinity engine so you didn't have to pull over for petrol, it would take you 319,565,504,484,394.85 hours or 36,480,080,420.59 years.
At the time of writing, the fastest probe so far created is the New Horizon probe which is travelling at a speed of 33,000 m.p.h. If the probe was travelling to Pismis 24-1 B (SW) then it would take 1,162,056,379,943.25 hours / 132,654,837.89 years to get there. Speed Ref: N.A.S.A.
It would to take a spaceship journey travelling at the speed of light, 6523.27 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
|Primary / Proper / Traditional Name||Pismis 24-1 B (SW)|
|Alternative Names||HD 319718|
|Constellation's Main Star||No|
|Multiple Star System||Yes|
|Star Type||Giant Star|
|Visual / Apparent Magnitude||11.10|
|Naked Eye Visible||Requires a 4.5 - 6 Inch Telescope - Magnitudes|
|Right Ascension (R.A.)||17h 24m 43.481|
|Declination (Dec.)||–34° 11` 57.21|
|Distance from Earth||0.50 Parallax (milliarcseconds)|
|6523.27 Light Years|
|412,526,737.97 Astronomical Units|
|Radial Velocity||-2.00 km/s|
|Associated / Clustered Stars||Pismis 24-1 A (NE)|
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