HR1684

Altitude: -0.1° Azimuth: 296.5° Direction: West-North-West

HR1684 is a giant star in the constellation of Orion.

HR1684 visual magnitude is 5.18. Because of its reltive faintness, HR1684 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 HR1684:

Color of HR1684 ⬤

Magnitude of HR1684 5.18

Class Giant

VISIBILITY RIGHT NOW

HR1684 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -0.1°
Azimuth: 296.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR1684

HR1684 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 HR1684 are provided in the following table:

Right Ascension J2000 05h 11m 41s

Declination J2000 +16° 02’ 44”

Galactic Longitude 186.63°

Galactic Latitude -13.57°

Constellation Orion

The simplified sky map below shows the position of HR1684 in the sky:

Simplified finder chart for HR1684.

Visibility of HR1684 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 HR1684 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: 74.0° RISE 22:42

Max altitude: 54.6° TRANSIT 6:08

Azimuth: 286.0° SET 13:30

Digitized Sky Survey image of HR1684

The image below is a photograph of HR1684 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 HR1684 is 0.005 arcsec per year in Right Ascension and 0.007 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR1684. The red arrow shows the motion of HR1684 during the next 100000 years (8.33 arcmin in Right Ascension and 11.67 arcmin in declination);

Distance of HR1684 from the Sun and relative movement

HR1684 is distant 321.18 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 98.52 pc

Distance (light year) 321.18 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA 0.005 arcsec/year

Proper Motion Dec 0.007 arcsec/year

Spectral properties of HR1684

HR1684 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.21

Spectral Type K5III

Color Index (B-V) 1.49

Temperature of HR1684 3809K

The red dot in the diagram below shows where HR1684 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1684. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1684

Henry Draper Catalogue HD33554

SAO Catalogue SAO94377

Hipparcos Catalogue HIP24197

Durchmusterung Catalogue BD+15 759

FK5 Catalogue 2391

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In Evidence

Other stars in Orion