Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR1685

HR1685 is a sub-giant star in the constellation of Orion.

HR1685 visual magnitude is 6.25. Because of its reltive faintness, HR1685 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 HR1685:

6.25
Sub-giant
HR1685 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR1685

HR1685 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 HR1685 are provided in the following table:

05h 10m 58s
-02° 15’ 14”
203°
-23.29°
Orion

The simplified sky map below shows the position of HR1685 in the sky:

Finder chart HR1685 star
Simplified finder chart for HR1685.

Visibility of HR1685 from your location

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

Today's HR1685 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 92.3°
Max altitude: 36.3°
Azimuth: 267.7°
HR1685 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1685

The image below is a photograph of HR1685 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 HR1685 is 0.075 arcsec per year in Right Ascension and -0.145 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR1685 star
DSS2 image of HR1685. The red arrow shows the motion of HR1685 during the next 1000 years (1.25 arcmin in Right Ascension and -2.42 arcmin in declination);

Distance of HR1685 from the Sun and relative movement

HR1685 is distant 157.79 light years from the Sun and it is moving far from the Sun at the speed of 64 kilometers per second.

48.40 pc
157.79 ly
64 km/s
0.075 arcsec/year
-0.145 arcsec/year

Spectral properties of HR1685

HR1685 belongs to spectral class K1 and has a luminosity class of IV corresponding to a sub-giant star.

2.83
K1IV
4791K

The red dot in the diagram below shows where HR1685 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1685. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1685

SAO131847
SAO131847