10311-2411 B 201 AB (HD 91172)

10h 31m 04.97s -24° 10' 47.3" P.A. 68.00 sep 2.0 mag 7.82,11.67 Sp A9/F0III dist. 193.05 pc (629.73 l.y.)

Coord 2000 10311-2411 Discov num B   201 Comp AB Coord arcsec 2000 10 31 04.97 -24 10 47.3
Date first 1926 Date last 2021 Obs 25
Pa first 66 Pa last 68.4 P.A. Now (θ) 68.4°
Sep first 1.7 Sep last 2.003 Sep. Now (ρ) 2.003"
Mag pri 7.82 Mag sec 11.67 delta mag (ΔM) 3.85 Spectral class A9/F0III (white)
Pri motion ra +006 Sec motion ra +009
Pri motion dec -023 Sec motion dec -021
Notes




rPM=0.152 (< 0.3, Physical double)

This double is physical.



10311-2411 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 178922 10 31 05 -24 10 47 CHR 132 Aa,Ab 1989 2 193 0.1 8.30
Show HD 91172 178922 10 31 05 -24 10 47 B 201 AB 2021 25 68 2.0 7.82 11.67 3.85 <===


Triple system
2 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 91172 Constellation Hydra SAO 178922 HIP 51501
Tycho2 6620-00751-1 Gaia DR2 5474165135645869952 HD 91172 CD CD-23 9339
CP CP-23 4960 Distance 193.05 Distance ly 629.73