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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
SunriseRise: 6:50  
clear_day Transit: 12:11  
SunsetSet: 17:32
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 


Altitude: 8.7°   Azimuth: 267.7°   Direction: West

HR1777 is a main-sequence star in the constellation of Orion.

HR1777 visual magnitude is 6.35. Because of its reltive faintness, HR1777 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR1777 is -0.024 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 HR1777 star
DSS2 image of HR1777. The red arrow shows the motion of HR1777 during the next 10000 years (-4.00 arcmin in Right Ascension and -0.50 arcmin in declination);

Key facts about HR1777


HR1777 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 8.7°
Azimuth: 267.7°
Direction: West

Celestial coordinates and finder chart of HR1777

HR1777 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 HR1777 are provided in the following table:

05h 23m 31s
+05° 19’ 20”

The simplified sky map below shows the position of HR1777 in the sky:

Finder chart HR1777 star
Simplified finder chart for HR1777.

Visibility of HR1777 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 HR1777 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: 84.7°
Max altitude: 43.8°
Azimuth: 275.3°

Distance of HR1777 from the Sun and relative movement

HR1777 is distant 244.74 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

75.08 pc
244.74 ly
9 km/s
-0.024 arcsec/year
-0.003 arcsec/year

Spectral properties of HR1777

HR1777 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1777 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1777. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1777