17505-5337 HJ 4978 (Ups1 Ara)

 
 
17h 50m 28.40s -53 36' 44.7" P.A. 268 sep 12.3 mag 5.69,9.22 Sp B3III+B9V dist. 303.03 pc (988.48 l.y.)
 
 
Coord 2000
17505-5337
Discov num
HJ 4978
Comp
Coord arcsec 2000
17 50 28.40 -53 36 44.7
Date first
1834
Date last
2016
Obs
18
Pa first
270
Pa last
268
P.A. Now (θ)
268°
Sep first
12.1
Sep last
12.3
Sep. Now (ρ)
12.3"
Mag pri
5.69
Mag sec
9.22
delta mag (ΔM)
3.53
Spectral class
B3III+B9V (blue-white/blue-white)
Pri motion ra
+002
Sec motion ra
+002
Pri motion dec
-010
Sec motion dec
-010
Notes
N Z (See Notes, Parallax indicates components are physical)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
267.7
Precise sep
12.26
Name
Ups1 Ara
Var name
V539 Ara
Constellation
Ara
SAO
245065
HIP
87314
Tycho2
8742-03096-1
HD
161783
HR
6622
GC
24187
CP
CP-53 8799
Bayer
Upsilon 1 Arae
Bayer name
Ups1 Ara
Distance
303.03
Distance ly
988.48
last precise pa
267.7
last precise sep
12.26
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17505-5337 HJ 4978 2000 16 268 12.4 5.69 9.22 B2V+B3V N D 175028.40-533644.7
17505-5337 HJ 4978 2010 18 266 12.2 5.69 9.22 B3III+B9V NZ 175028.40-533644.7
17505-5337 HJ 4978 2016 18 268 12.3 5.69 9.22 B3III+B9V NZ 175028.40-533644.7

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