2 Vulpeculae

Above the horizon. Rise: 12:11 | Tran: 20:18 | Set: 4:28

Alt: 59.14° Az: 151.12° Direction: South-South-East

2 Vulpeculae is a variable and multiple hypergiant star of spectral class B0 in the constellation of Vulpecula.

2 Vulpeculae visual magnitude is 5.43. Because of its faintness, 2 Vulpeculae is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 2 Vulpeculae. The red arrow shows the motion of 2 Vulpeculae during the next 100000 years (1.67 arcmin in Right Ascension and -8.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 18m 46s

Declination +23° 04’ 17”

Hour Angle 22h 57m 30s

Sideral Time 18h 16m 16s

J2000

Right Ascension 19h 17m 43s

Declination +23° 01’ 32”

Galactic Coordinates

Galactic Longitude 56.36°

Galactic Latitude 4.85°

Finder Chart

Simplified finder chart for 2 Vulpeculae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.43

Class Hypergiant

Absolute magnitude -3.42

Spectral Type B0IV

Color Index (B-V) 0.02

Temperature 9882K

The red dot in the diagram below shows where 2 Vulpeculae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 2 Vulpeculae. Attribution: Richard Powell / CC BY-SA

Star System Properties

2 Vulpeculae is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the 2 Vulpeculae double sysyem:

Main star magnitude 5.43

Secondary star magnitude 10.13

Magnitude difference 4.7

Separation 1.8 arcsec

Distance, Radial Speed, Proper Motion

2 Vulpeculae is distant 1,917.65 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

Distance (parsec) 588.24

Distance (light year) 1,917.65

Radial Speed 1 km/s

Proper Motion RA 0.001 arcsec/y

Proper Motion Dec -0.005"/y

Alternative Designations

Flamsteed designation 2 Vulpeculae

Henry Draper Catalogue HD180968

SAO Catalogue SAO87036

Hipparcos Catalogue HIP94827

Durchmusterung Catalogue BD+22 3648

General Catalogue of Variable Stars ES Vul

Aitken Double Star Catalogue ADS12287

Visibility from Your Location

Today's 2 Vulpeculae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 66.9° RISE 12:11

Max altitude: 61.6° TRANSIT 20:18

Azimuth: 293.1° SET 4:28

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Vulpecula