Your guide to the Solar System and the night sky
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

HR4975

HR4975 is a variable and multiple main-sequence star in the constellation of Centaurus.

HR4975 visual magnitude is 4.6. Because of its moderate brightness, HR4975 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4975:

4.6
Main-sequence
HR4975 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4975

HR4975 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4975 are provided in the following table:

13h 12m 17s
-59° 55’ 14”
305.55°
2.85°
Centaurus

The simplified sky map below shows the position of HR4975 in the sky:

Finder chart HR4975 star
Simplified finder chart for HR4975.

Visibility of HR4975 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4975 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4975

The image below is a photograph of HR4975 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR4975 is -0.049 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4975 star
DSS2 image of HR4975. The red arrow shows the motion of HR4975 during the next 10000 years (-8.17 arcmin in Right Ascension and -4.00 arcmin in declination);

Distance of HR4975 from the Sun and relative movement

HR4975 is distant 346.07 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

106.16 pc
346.07 ly
12 km/s
-0.049 arcsec/year
-0.024 arcsec/year

Spectral properties of HR4975

HR4975 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.

-0.53
B8V
11247K

The red dot in the diagram below shows where HR4975 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4975. Attribution: Richard Powell / CC BY-SA

HR4975 star system properties

HR4975 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4975 double sysyem:

4.6
5
0.4
0.1 arcsec

Alternative designations of HR4975

SAO240645
SAO240645