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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sculptor » 


Altitude: -28.8°   Azimuth: 250.5°   Direction: West-South-West

HR170 is a variable main-sequence star in the constellation of Sculptor.

HR170 visual magnitude is 6.69. Because of its reltive faintness, HR170 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 HR170:


HR170 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.8°
Azimuth: 250.5°
Direction: West-South-West

Celestial coordinates and finder chart of HR170

HR170 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR170 are provided in the following table:

00h 39m 57s
-33° 57’ 42”

The simplified sky map below shows the position of HR170 in the sky:

Finder chart HR170 star
Simplified finder chart for HR170.

Visibility of HR170 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 HR170 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: 124.0°
Max altitude: 4.6°
Azimuth: 236.0°

Digitized Sky Survey image of HR170

The image below is a photograph of HR170 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 HR170 is 0.333 arcsec per year in Right Ascension and -0.116 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR170 star
DSS2 image of HR170. The red arrow shows the motion of HR170 during the next 1000 years (5.55 arcmin in Right Ascension and -1.93 arcmin in declination);

Distance of HR170 from the Sun and relative movement

HR170 is distant 135.16 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

41.46 pc
135.16 ly
-11 km/s
0.333 arcsec/year
-0.116 arcsec/year

Spectral properties of HR170

HR170 belongs to spectral class F8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR170 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR170. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR170