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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: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Gemini » 


Altitude: 44.6°   Azimuth: 265.5°   Direction: West

HR2757 is a hypergiant star in the constellation of Gemini.

HR2757 visual magnitude is 6.24. Because of its reltive faintness, HR2757 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 HR2757:


HR2757 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 44.6°
Azimuth: 265.5°
Direction: West

Celestial coordinates and finder chart of HR2757

HR2757 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2757 are provided in the following table:

07h 18m 04s
+30° 57’ 20”

The simplified sky map below shows the position of HR2757 in the sky:

Finder chart HR2757 star
Simplified finder chart for HR2757.

Visibility of HR2757 from your location

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

Today's HR2757 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.0°
Max altitude: 69.5°
Azimuth: 301.0°

Digitized Sky Survey image of HR2757

The image below is a photograph of HR2757 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 HR2757 is -0.004 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2757 star
DSS2 image of HR2757. The red arrow shows the motion of HR2757 during the next 10000 years (-0.67 arcmin in Right Ascension and -4.67 arcmin in declination);

Distance of HR2757 from the Sun and relative movement

HR2757 is distant 611.63 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

187.62 pc
611.63 ly
27 km/s
-0.004 arcsec/year
-0.028 arcsec/year

Spectral properties of HR2757

HR2757 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 HR2757 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2757. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2757