HR6666

HR6666 is a giant star in the constellation of Serpens.

HR6666 visual magnitude is 6.18. Because of its reltive faintness, HR6666 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 HR6666:

Color of HR6666 ⬤

Magnitude of HR6666 6.18

Class Giant

VISIBILITY RIGHT NOW HR6666 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR6666

HR6666 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 HR6666 are provided in the following table:

Right Ascension J2000 17h 53m 03s

Declination J2000 -10° 53’ 58”

Galactic Longitude 16.45°

Galactic Latitude 7.7°

Constellation Serpens

The simplified sky map below shows the position of HR6666 in the sky:

Simplified finder chart for HR6666.

Visibility of HR6666 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 HR6666 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: 100.9° RISE 21:17

Max altitude: 27.6° TRANSIT 2:23

Azimuth: 259.1° SET 7:26

RIGHT NOW HR6666 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6666

The image below is a photograph of HR6666 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 HR6666 is 0.055 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6666. The red arrow shows the motion of HR6666 during the next 10000 years (9.17 arcmin in Right Ascension and -5.50 arcmin in declination);

Distance of HR6666 from the Sun and relative movement

HR6666 is distant 273.03 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.

Distance (parsec) 83.75 pc

Distance (light year) 273.03 ly

Heliocentric radial velocity -35 km/s

Proper Motion RA 0.055 arcsec/year

Proper Motion Dec -0.033 arcsec/year

Spectral properties of HR6666

HR6666 belongs to spectral class K1

Absolute magnitude 1.57

Spectral Type K1

Color Index (B-V) 1.11

Temperature of HR6666 4493K

The red dot in the diagram below shows where HR6666 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6666. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6666

Henry Draper Catalogue HD162757

SAO Catalogue SAO160885

Hipparcos Catalogue HIP87540

Durchmusterung Catalogue BD-10 4560

In Evidence

Other stars in Serpens