We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Help keep this site free and ads-free! Donate Now!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sleep NighttimeWhat's Visible Now?
All Constellations » Hydrus » 

HR87

Altitude: -56.0°   Azimuth: 160.1°   Direction: South-South-East

HR87 is a giant star in the constellation of Hydrus.

HR87 visual magnitude is 5.97. Because of its reltive faintness, HR87 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 HR87 is 0.002 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR87 star
DSS2 image of HR87. The red arrow shows the motion of HR87 during the next 10000 years (0.33 arcmin in Right Ascension and -1.67 arcmin in declination);

Key facts about HR87

5.97
Giant

HR87 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -56.0°
Azimuth: 160.1°
Direction: South-South-East

Celestial coordinates and finder chart of HR87

HR87 is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR87 are provided in the following table:

00h 21m 28s
-77° 25’ 36”
305.04°
-39.58°
Hydrus

The simplified sky map below shows the position of HR87 in the sky:

Finder chart HR87 star
Simplified finder chart for HR87.

Visibility of HR87 from your location

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

HR87 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR87 from the Sun and relative movement

HR87 is distant 696.58 light years from the Sun and it is moving far from the Sun at the speed of 21 kilometers per second.

213.68 pc
696.58 ly
21 km/s
0.002 arcsec/year
-0.01 arcsec/year

Spectral properties of HR87

HR87 belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.

-0.68
K3III
3950K

The red dot in the diagram below shows where HR87 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR87. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR87

SAO255663
SAO255663