05176-0651 H 5  25AB (Tau Ori)

05h 17m 36.40s -06 50' 39.8" P.A. 251 sep 33.3 mag 3.60,11.00 Sp B5III dist. 151.52 pc (494.26 l.y.)

Coord 2000
05176-0651
Discov num
H 5  25
Comp
AB
Coord arcsec 2000
05 17 36.40 -06 50 39.8
Date first
1868
Date last
2011
Obs
14
Pa first
248
Pa last
251
P.A. Now (θ)
251°
Sep first
31.3
Sep last
33.3
Sep. Now (ρ)
33.3"
Mag pri
3.60
Mag sec
11.00
delta mag (ΔM)
7.4
Spectral class
B5III (blue-white)
Pri motion ra
-018
Sec motion ra
-011
Pri motion dec
-009
Sec motion dec
-007
Notes
N (See Notes)


rPM=0.362

Nature of this double is uncertain.



05176-0651 SYSTEM COMPONENTS

Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Tau Ori 131952 05176-0651 H 5 25 AB 1868 2011 14 251 33.3 3.60 11.00 7.40 <===
Show 05176-0651 HJ 2259 AD 1868 2011 15 61 35.4 3.60 10.90 7.30
Show 05176-0651 BU 188 BC 1876 2015 11 52 3.9 11.00 10.90 0.10
Quadruple system
4 visible stars in this system



OTHER CATALOGS AND DESIGNATIONS

Precise pa
250.8
Precise sep
33.26
Name
Tau Ori
Constellation
Orion
SAO
131952
HIP
24674
Tycho2
4764-01639-1
Gaia DR2
29306910720
HD
34503
HR
1735
GC
6480
BD
BD-07 1028
Bayer
Tau Orionis
Bayer name
Tau Ori
Flamsteed
20 Orionis
Flamsteed name
20 Ori
Distance
151.52
Distance ly
494.26




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
05176-0651 H 5 25 AB 1998 12 251 33.7 3.60 10.97 B5III N D 051736.40-065039.8
05176-0651 H 5 25 AB 2011 13 251 33.3 3.60 11.00 B5III N D 051736.40-065039.8

If you need more information about this double, apply for a data request form to the WDS.