Both

Database links to ο Eridani

Stern Both (ο 1 Eridani)
AladinLite
Observation dates equinox :  J2000.0 , epoch : J2000.0
Constellation	Eridanus
Right ascension	04 h 11 m 51.94 s
declination	-06 ° 50 ′ 15.3 ″
Apparent brightness	4.04 mag
Typing
B − V color index	+0.33
U − B color index	+0.13
R − I index	+0.16
Spectral class	F2 II-III
Variable star type	Delta Scuti Variator
Astrometry
Radial velocity	(11.0 ± 4.1) km / s
parallax	(26.80 ± 0.32)  mas
distance	(121.7 ± 1.5)  ly (37.31 ± 0.45)  pc
Visual absolute brightness M vis	+1.18 mag
Proper movement
Rec. Share:	(10.76 ± 0.35)  mas / a
Dec. portion:	(81.92 ± 0.33)  mas / a
Physical Properties
Other names and catalog entries
Bayer name ο 1 Eridani Flamsteed name 38 Eridani Bonn survey BD −7 ° 764 Bright Star Catalog HR 1298 [1] Henry Draper Catalog HD 26574 [2] Hipparcos catalog HIP 19587 [3] SAO catalog SAO 131019 [4] Tycho catalog TYC 4732-1970-1 [5] Other names FK5  154
annotation
↑ Calculated from apparent brightness and distance.

Both ("egg of the ostrich") is the name of the star ο ¹ Eridani (Omicron ¹ Eridani) in the constellation Eridanus . He is one of the Delta Scuti variables .

Omikron Eridani belongs to the spectral class F2 II-III and has an apparent magnitude of 4.04 mag. It is about 126 light years from Earth.

Individual evidence

1. ↑ ^{a b c} Hipparcos catalog (ESA 1997)
2. ↑ ^{a b c} Bright Star Catalog
3. ↑ Pulkovo radial velocities for 35493 HIP stars
4. ↑ ^{a b c} Hipparcos, the New Reduction (van Leeuwen, 2007)