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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: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Monoceros » 


Altitude: -39.9°   Azimuth: 350.8°   Direction: North

HR2577 is a variable sub-giant star in the constellation of Monoceros.

HR2577 visual magnitude is 6.21. Because of its reltive faintness, HR2577 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 HR2577:


HR2577 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -39.9°
Azimuth: 350.8°
Direction: North

Celestial coordinates and finder chart of HR2577

HR2577 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2577 are provided in the following table:

06h 54m 42s
-01° 45’ 23”

The simplified sky map below shows the position of HR2577 in the sky:

Finder chart HR2577 star
Simplified finder chart for HR2577.

Visibility of HR2577 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 HR2577 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: 91.8°
Max altitude: 36.8°
Azimuth: 268.2°

Digitized Sky Survey image of HR2577

The image below is a photograph of HR2577 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 HR2577 is 0.006 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 HR2577 star
DSS2 image of HR2577. The red arrow shows the motion of HR2577 during the next 100000 years (10.00 arcmin in Right Ascension and 10.00 arcmin in declination);

Distance of HR2577 from the Sun and relative movement

HR2577 is distant 4,591.55 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

1,408.45 pc
4,591.55 ly
9 km/s
0.006 arcsec/year
0.006 arcsec/year

Spectral properties of HR2577

HR2577 belongs to spectral class B3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR2577 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2577. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2577