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🌎  Greenwich, United Kingdom [change]


HR4977 is a hypergiant star in the constellation of Musca.

HR4977 visual magnitude is 5.9. Because of its reltive faintness, HR4977 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 HR4977:

HR4977 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4977

HR4977 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 HR4977 are provided in the following table:

13h 12m 48s
-66° 13’ 36”

The simplified sky map below shows the position of HR4977 in the sky:

Finder chart HR4977 star
Simplified finder chart for HR4977.

Visibility of HR4977 from your location

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

HR4977 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4977

The image below is a photograph of HR4977 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 HR4977 is 0.024 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4977 star
DSS2 image of HR4977. The red arrow shows the motion of HR4977 during the next 10000 years (4.00 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR4977 from the Sun and relative movement

HR4977 is distant 284.72 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

87.34 pc
284.72 ly
9 km/s
0.024 arcsec/year
0.006 arcsec/year

Spectral properties of HR4977

HR4977 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4977 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4977. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4977