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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Puppis » 


Altitude: -65.7°   Azimuth: 267.6°   Direction: West

HR3055 is a double hypergiant star in the constellation of Puppis.

HR3055 visual magnitude is 4.11. Because of its moderate brightness, HR3055 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 HR3055:


HR3055 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -65.7°
Azimuth: 267.6°
Direction: West

Celestial coordinates and finder chart of HR3055

HR3055 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3055 are provided in the following table:

07h 49m 14s
-46° 22’ 23”

The simplified sky map below shows the position of HR3055 in the sky:

Finder chart HR3055 star
Simplified finder chart for HR3055.

Visibility of HR3055 from your location

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

HR3055 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3055

The image below is a photograph of HR3055 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 HR3055 is 0 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR3055 star
DSS2 image of HR3055. The red arrow shows the motion of HR3055 during the next 100000 years (0.00 arcmin in Right Ascension and 10.00 arcmin in declination);

Distance of HR3055 from the Sun and relative movement

HR3055 is distant 1,963.86 light years from the Sun and it is moving far from the Sun at the speed of 24 kilometers per second.

602.41 pc
1,963.86 ly
24 km/s
0.006 arcsec/year

Spectral properties of HR3055

HR3055 belongs to spectral class B0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3055 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3055. Attribution: Richard Powell / CC BY-SA

HR3055 star system properties

HR3055 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR3055 double sysyem:

59.2 arcsec

Alternative designations of HR3055