HR7002

Altitude: -29.5° Azimuth: 6.7° Direction: North

HR7002 is a variable and double giant star in the constellation of Ophiuchus.

HR7002 visual magnitude is 6.4. Because of its reltive faintness, HR7002 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 HR7002:

Color of HR7002 ⬤

Magnitude of HR7002 6.4

Class Giant

VISIBILITY RIGHT NOW

HR7002 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -29.5°
Azimuth: 6.7°
Direction: North

Celestial coordinates and finder chart of HR7002

HR7002 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 HR7002 are provided in the following table:

Right Ascension J2000 18h 38m 21s

Declination J2000 +08° 50’ 02”

Galactic Longitude 39.35°

Galactic Latitude 6.9°

Constellation Ophiuchus

The simplified sky map below shows the position of HR7002 in the sky:

Simplified finder chart for HR7002.

Visibility of HR7002 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 HR7002 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: 81.2° RISE 7:14

Max altitude: 47.4° TRANSIT 13:57

Azimuth: 278.8° SET 20:40

Digitized Sky Survey image of HR7002

The image below is a photograph of HR7002 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 HR7002 is -0.014 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7002. The red arrow shows the motion of HR7002 during the next 10000 years (-2.33 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR7002 from the Sun and relative movement

HR7002 is distant 32,600,000.00 light years from the Sun and it is moving towards the Sun at the speed of 71 kilometers per second.

Distance (parsec) 10,000,000.00 pc

Distance (light year) 32,600,000.00 ly

Heliocentric radial velocity -71 km/s

Proper Motion RA -0.014 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR7002

HR7002 belongs to spectral class M6 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -23.60

Spectral Type M6III

Color Index (B-V) 1.32

Temperature of HR7002 4086K

The red dot in the diagram below shows where HR7002 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7002. Attribution: Richard Powell / CC BY-SA

HR7002 star system properties

HR7002 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7002 double sysyem:

Main star magnitude 6.4

Secondary star magnitude 8.6

Magnitude difference 2.2

Separation 0.4 arcsec

Alternative designations of HR7002

Henry Draper Catalogue HD172171

SAO Catalogue SAO123744

Hipparcos Catalogue HIP91389

Durchmusterung Catalogue BD+08 3780

General Catalogue of Variable Stars X Oph

Aitken Double Star Catalogue ADS11524

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In Evidence

Other stars in Ophiuchus