Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:01  ☀️ Transit: 12:06  🌅 Sunset: 18:11


HR490 is a sub-giant star in the constellation of Triangulum.

HR490 visual magnitude is 5.64. Because of its reltive faintness, HR490 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 HR490:

HR490 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 10°.

Celestial coordinates and finder chart of HR490

HR490 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 HR490 are provided in the following table:

01h 42m 03s
+35° 14’ 44”

The simplified sky map below shows the position of HR490 in the sky:

Finder chart HR490 star
Simplified finder chart for HR490.

Visibility of HR490 from your location

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

Today's HR490 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 54.8°
Max altitude: 73.8°
Azimuth: 305.2°
HR490 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR490

The image below is a photograph of HR490 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 HR490 is 0.049 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 HR490 star
DSS2 image of HR490. The red arrow shows the motion of HR490 during the next 10000 years (8.17 arcmin in Right Ascension and -4.67 arcmin in declination);

Distance of HR490 from the Sun and relative movement

HR490 is distant 258.52 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

79.30 pc
258.52 ly
-2 km/s
0.049 arcsec/year
-0.028 arcsec/year

Spectral properties of HR490

HR490 belongs to spectral class B9 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR490 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR490. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR490