Pi ⁴ Orionis

Database links to π ⁴ Orionis

Double star π 4 Orionis
Observation dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation	Orion
Right ascension	04 h 51 m 12.4 s
declination	+ 05 ° 36 ′ 18 ″
Apparent brightness	3.68 likes
Astrometry
Radial velocity	(+23 ± 4) km / s
parallax	(3.10 ± 0.18) mas
distance	(1050 ± 60) ly ((323 ± 19) pc )
Proper movement :
Rec. Share:	(−2.21 ± 0.22) mas / a
Dec. portion:	(+0.85 ± 0.12) mas / a
orbit
period	9.52 d
eccentricity	0.033 ± 0.023
Epoch of the periastron	JD 2418276
Argument of the periapsis	165 ° ± 40 °
Individual data
Names	A; B.
Other names and catalog entries
Bayer name π 4 Orionis Flamsteed name 3 Orionis Bonn survey BD + 5 ° 745 Bright Star Catalog HR 1552 [1] Henry Draper Catalog HD 30836 [2] SAO catalog SAO 112142 [3] Tycho catalog TYC 92-2345-1 [4] Hipparcos catalog HIP 22549 [5] Further designations: FK5  179

π ⁴ Orionis (Pi ⁴ Orionis / π ⁴ Ori, also 3 Orionis ) is a spectroscopic double star in the constellation Orion . It is around 1000 light years from Earth. The period of rotation of the system is 9.5 days.

Web links

• SIMBAD

Individual evidence

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