ο1 Orionis (omicron1 Orionis)

Above the horizon. Rise: 22:51 | Tran: 6:07 | Set: 13:19

Alt: 29.37° Az: 104.61° Direction: East-South-East

ο1 Orionis is a variable star of spectral class S3 in the constellation of Orion.

ο1 Orionis visual magnitude is 4.74. Because of its moderate brightness, ο1 Orionis is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of ο1 Orionis (omicron1 Orionis) star

DSS2 image of ο1 Orionis. The red arrow shows the motion of ο1 Orionis during the next 10000 years (0.00 arcmin in Right Ascension and -9.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 04h 53m 56s

Declination +14° 17’ 24”

Hour Angle 19h 58m 04s

Sideral Time 00h 52m 00s

J2000

Right Ascension 04h 52m 32s

Declination +14° 15’ 02”

Galactic Coordinates

Galactic Longitude 185.43°

Galactic Latitude -18.39°

Finder Chart

Simplified finder chart for ο1 Orionis (omicron1 Orionis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.74

Class

Absolute magnitude -1.36

Spectral Type S3

Color Index (B-V) 1.84

Temperature 3345K

The red dot in the diagram below shows where ο1 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ο1 Orionis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

ο1 Orionis is distant 541.53 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 166.11

Distance (light year) 541.53

Radial Speed -8 km/s

Proper Motion Dec -0.057"/y

Alternative Designations

Bayer designation ο1 Orionis
(omicron1 Orionis)

Flamsteed designation 4 Orionis

Henry Draper Catalogue HD30959

SAO Catalogue SAO94176

Hipparcos Catalogue HIP22667

Durchmusterung Catalogue BD+14 777

FK5 Catalogue 1136

General Catalogue of Variable Stars Omi1 Ori

Visibility from Your Location

Today's ο1 Orionis (omicron1 Orionis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 75.7° RISE 22:51

Max altitude: 52.8° TRANSIT 6:07

Azimuth: 284.3° SET 13:19

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

Location

Other stars in Orion