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]

HR4912

HR4912 is a variable supergiant star in the constellation of Hydra.

HR4912 visual magnitude is 6.62. Because of its reltive faintness, HR4912 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR4912:

6.62
Supergiant
HR4912 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4912

HR4912 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 HR4912 are provided in the following table:

12h 56m 30s
-26° 27’ 37”
304.34°
36.4°
Hydra

The simplified sky map below shows the position of HR4912 in the sky:

Finder chart HR4912 star
Simplified finder chart for HR4912.

Visibility of HR4912 from your location

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

Today's HR4912 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 116.5°
Max altitude: 12.1°
Azimuth: 243.5°
HR4912 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4912

The image below is a photograph of HR4912 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 HR4912 is 0.013 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4912 star
DSS2 image of HR4912. The red arrow shows the motion of HR4912 during the next 10000 years (2.17 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR4912 from the Sun and relative movement

HR4912 is distant 32,600,000.00 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

10,000,000.00 pc
32,600,000.00 ly
-24 km/s
0.013 arcsec/year
-0.015 arcsec/year

Spectral properties of HR4912

HR4912 belongs to spectral class F3 and has a luminosity class of I corresponding to a supergiant star.

-23.38
F3I
5671K

The red dot in the diagram below shows where HR4912 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4912. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4912

SAO181244
SAO181244