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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: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sleep NighttimeWhat's Visible Now?
All Constellations » Puppis » 


Altitude: -10.2°   Azimuth: 202.6°   Direction: South-South-West

HR3057 is a hypergiant star in the constellation of Puppis.

HR3057 visual magnitude is 6.32. Because of its reltive faintness, HR3057 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 HR3057:


HR3057 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.2°
Azimuth: 202.6°
Direction: South-South-West

Celestial coordinates and finder chart of HR3057

HR3057 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 HR3057 are provided in the following table:

07h 49m 28s
-44° 45’ 06”

The simplified sky map below shows the position of HR3057 in the sky:

Finder chart HR3057 star
Simplified finder chart for HR3057.

Visibility of HR3057 from your location

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

HR3057 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3057

The image below is a photograph of HR3057 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 HR3057 is -0.048 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3057 star
DSS2 image of HR3057. The red arrow shows the motion of HR3057 during the next 10000 years (-8.00 arcmin in Right Ascension and 0.50 arcmin in declination);

Distance of HR3057 from the Sun and relative movement

HR3057 is distant 329.29 light years from the Sun and it is moving far from the Sun at the speed of 32 kilometers per second.

101.01 pc
329.29 ly
32 km/s
-0.048 arcsec/year
0.003 arcsec/year

Spectral properties of HR3057

HR3057 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3057 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3057. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3057