19091+3436 STF 2474 AB (HD 178911)
19h 09m 04.35s +34° 35' 59.9" P.A. 262.00 sep 16.0 mag 6.78,7.88 Sp G1V dist. 42.59 pc (138.93 l.y.)
Coord 2000
19091+3436
Discov num
STF2474
Comp
AB
Coord arcsec 2000
19 09 04.35 +34 35 59.9
Date first
1823
Date last
2019
Obs
84
Pa first
260
Pa last
262
P.A. Now (θ)
262°
Sep first
17.1
Sep last
15.96
Sep. Now (ρ)
15.96"
Mag pri
6.78
Mag sec
7.88
delta mag (ΔM)
1.1
Spectral class
G1V (yellow)
Pri motion ra
+056
Sec motion ra
+069
Pri motion dec
+191
Sec motion dec
+197
Notes
N
Z
V
(See Notes, Parallax indicates components are physical, Proper motion indicates physical)
rPM=0.069 (< 0.3, Physical double)
This double is physical.
19091+3436 SYSTEM COMPONENTS
Show
name
SAO
coord
wds_name
last
obs
pa
sep
mag1
mag2
d_mag
orb
current
Show
67879
19 09 04 +34 35 60
CHR 84 Aa,Ab
2014
36
114
0.1
6.89
8.96
2.07
Y
Show
HD 178911
67879
19 09 04 +34 35 60
STF 2474 AB
2019
84
262
16.0
6.78
7.88
1.10
<===
Show
67879
19 09 04 +34 35 60
WAL 105 AC
2017
5
126
97.5
6.78
11.42
4.64
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name
HD 178911
Constellation
Lyra
SAO
67879
HIP
94075
Tycho2
2648-02148-1
Gaia DR2
2044341077844183040
HD
178911
HR
7272
GC
26396
ADS
12101
DM
BD+34 3439
BD
BD+34 3438
Distance
42.59
Distance ly
138.93
WDS 19091+3436 STF 2474 AB (HD 178911) : NOTES
discov_num
notes
refcode
STF2474
B is BD+34 3438.
AB: NLTT 47474/47473
Chm2004
AB: B is exoplanet host, P=71.5d.
Tok2014d
CHR 84
Aa,Ab: 1985.5232: This autocorrelogram was remeasured; the new results
are listed here.
The paper by Tokovinin et al. (2000) also includes a combined
Tok2000a
spectroscopic/astrometric solution for orbital elements and masses.
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 5.43 +/- 2.10, 2.39, and 1.02 Msun, respectively.
Mlk2012
Aa,Ab: SB2, P=3.540y.
Tok2014d
Combined solution by Farrington et al. (2014) yields masses 0.802 +/-
0.055 and 0.622 +/- 0.053 Msun, as well as an orbital parallax 28.26
+/- 1.70 mas.
CIA2014a
REFERENCES
refcode
metd
author
reference
Chm2004
E -
Chaname, J. & Gould, A.
2004ApJ...601..289C
Chm2004
ApJ 601, 289, 2004
Chm2004
(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004
versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004
identical to discovery observations - predominantly close pairs - were assumed
Chm2004
not new observations, so not included in WDS. Similar concerns when primary and
Chm2004
secondary magnitudes or proper motions were the same.)
CIA2014a
Kf j
Farrington, C.D., ten Brummelaar, T.A., Mason, B.D., Hartkopf, W.I., Mourard, D.,
2014AJ....148...48F
CIA2014a
+Kc
Moravveji, E., McAlister, H.A., Turner, N.H., Sturmann, L., & Sturmann, J.
CIA2014a
+orb
AJ 148, 48, 2014
Mlk2012
not -
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.
2012A&A...546A..69M
Mlk2012
A&A 546, A69, 2012
Tok2000a
S u
Tokovinin, A.A., Griffin, R.F., Balega, Y.Y., Pluzhnik, E.A., & Udry, S.
2000AstL...26..116T
Tok2000a
+orb
SvAL 26, 116, 2000
Tok2014d
E2 -
Tokovinin, A.
2014AJ....147...86T
Tok2014d
AJ 147, 86, 2014
DISCOVERER
idgroup
discov
author
1
CHR
Center for High Ang. Res. Astronomy (speckle interferometry systems)
3
STF
Struve, F.G.W.
36
WAL
Wallenquist, A.
WDS HISTORIC DATA
coord_2000
discov_num
comp
epoch
obs
pa
sep
mag_pri
mag_sec
spectr
notes
coord_arcsec_2000
19091+3436
STF2474
AB
2007
66
263
15.7
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2008
67
263
16.0
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2010
68
263
15.5
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2012
69
263
15.9
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2013
70
262
16.0
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2014
76
263
15.9
6.78
7.88
G1V
NZDV
190904.35+343559.9
19091+3436
STF2474
AB
2017
79
263
15.9
6.78
7.88
G1V
NZ V
190904.35+343559.9
19091+3436
STF2474
AB
2018
83
264
15.9
6.78
7.88
G1V
NZ V
190904.35+343559.9
19091+3436
STF2474
AB
2019
84
263
16.0
6.78
7.88
G1V
NZ V
190904.35+343559.9
If you need more information about this double, apply for a
data request form to the WDS.
WDS 19091+3436 STF 2474 AB (HD 178911) : VISUAL OBSERVATIONS REPORTS
Show
date
username
difficulty
separation
pa_estim
interest
notes
Show
23/11/25
Diego Vercelli
very easy
separated
260
interesting
In the same FOV STF2470
Show
22/09/16
daedalus1
mean difficulty
separated
263
Seeing: Pickering 4, poor. Measure: theta 263, rho 16.0 +/- 0.0.
Beautiful star. STF 2470 is a mirror to STF 2474 which is very close, 10' to the NW. 12 measures were taken. All were the same because (I suppose) the separation matched the eyepiece calibration factor exactly. I did not have to interpolate between the lines.
WDS 19091+3436 STF 2474 AB (HD 178911) : MEASURES
No records found.
WDS 19091+3436 (HD 178911) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
WDS 19091+3436 (HD 178911) : ALADIN DSS IMAGE @ 19h 09m 04.35s +34° 35' 59.9"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS
WDS 19091+3436 STF 2474 AB (HD 178911) : NEIGHBORHOODS
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show
name
coord_2000
discov#
comp
pa
sep
dist(')
Show
19091+3436
CHR 84
Aa,Ab
114
0.1
Show
19091+3436
STF2474
AB
262
16.0
Show
19091+3436
WAL 105
AC
126
97.5
Show
19088+3446
STF2470
267
13.8
11
Show
19098+3430
KPP4140
236
35.7
12
Show
19088+3419
POP 30
316
2.3
18
Show
19089+3404
COU1462
Aa,Ab
32
0.2
33
Show
19089+3404
TOK 327
AB
47
44.4
33
Show
19077+3402
ES 2288
60
4.5
38
Show
19069+3410
WFC 217
335
7.7
38
Show
19069+3505
POP 18
213
4.3
41
Show
19059+3502
BKO 58
DE
140
14.3
46
Show
19059+3502
BKO 58
BC
292
13.9
47
Show
19059+3502
BKO 58
BD
184
46.7
47
Show
19059+3502
HZG 13
AB
137
27.4
47
Show
19059+3502
BKO 58
AC
159
16.0
47
Show
19129+3427
ES 2289
198
1.7
48
Show
19066+3355
ZUL 1
165
1.4
52
Show
19072+3350
HEI 806
AB
89
3.3
52
Show
19072+3350
HEI 806
AC
224
4.1
52
Show
19132+3420
COU1616
132
0.3
54
Show
19060+3354
TDS 965
165
1.4
57
Show
19106+3530
ALI 145
308
14.4
58
Show
19129+3510
HU 942
278
1.7
58
Show
19137+3454
ES 2238
218
2.2
61
Show
19141+3433
GMC 26
205
19.0
62
Show
19055+3352
HU 940
187
0.4
63
Show
19132+3400
ES 2290
AB
328
2.7
63
Show
19132+3400
ES 2290
AB,C
77
16.3
63
Show
19132+3400
ES 2290
AB,D
67
27.0
63
Show
19041+3425
TDT1207
125
2.4
63
Show
19045+3406
J 1209
155
4.4
65
Show
19145+3434
BU 975
BC
261
1.0
67
Show
19145+3434
STT 367
A,BC
226
34.6
67
Show
19145+3434
HO 648
AD
93
15.7
67
Show
19145+3434
RAO 84
AE
73
2.9
67
Show
19071+3539
TDT1231
269
0.9
68
Show
19142+3413
STT 366
AB
230
21.8
68
Show
19142+3413
ES 2675
AC
139
26.6
68
Show
19142+3413
WAL 106
AD
116
22.6
68
Show
19142+3413
ES 2675
CD
16
10.9
69
Show
19039+3409
BU 1285
AB
289
11.2
70
Show
19039+3409
BU 1285
AC
208
41.8
70
Show
19061+3335
TDT1223
41
2.5
72
Show
19125+3534
CRC 33
127
12.0
72
Show
19108+3545
TDT1278
25
2.0
73
Show
19120+3543
ALI 146
123
7.9
76
Show
19147+3506
ES 2239
46
8.8
77
Show
19061+3549
COU1614
117
0.5
82
Show
19047+3334
ES 2237
218
9.9
83
Show
19123+3321
COU1314
65
1.1
86
WDS 19091+3436 : COMPONENTS
A
Ab
B
Ab
pa=118.2°
sep=0.05"
B
pa=260.3°
sep=13.20"
pa=260.4°
sep=13.24"
C
pa=130.9°
sep=86.46"
pa=130.9°
sep=86.41"
pa=124.8°
sep=95.39"
19091+3436 A
Name
HD 178911
Coord arcsec 2000
190904.35+343559.9
Mag
6.78
Spectral class
G1V (yellow)
PmRA
56.00
PmDE
191.0
SAO
67879
HIP
94076
Tycho2
2648-02148-1
HD
178911
HR
7272
GC
26396
BD
BD+34 3439
Tycho2
2648-02148-1
Pflag
RAmdeg
287.26828204
DEmdeg
34.60043270
PmRA
51.7
PmDE
186.1
E RAmdeg
4
E DEmdeg
4
E pmRA
1.8
E pmDE
1.7
EpRAm
1991.39
EpDEm
1991.57
Num
9
Q RAmdeg
1.2
Q DEmdeg
1.2
Q pmRA
1.2
Q pmDE
1.2
BTmag
7.494
E BTmag
0.015
VTmag
6.782
E VTmag
0.010
Prox
162
TYC
T
HIP
94076
CCDM
A
RAdeg
287.26813333
DEdeg
34.60000222
EpRA 1990
1.49
EpDE 1990
1.67
E RAdeg
4.2
E DEdeg
3.9
Posflg
Corr
0.0
SAO
67879
DelFlag
RA1950
PmRA1950
0.0041
DE1950
PmDE1950
0.195
Vmag
6.5
SpType
G5
Double code
Source
70
CatNum
26396
DM
BD+34 3439
DMcomp
BDsup
HD
178911
M HD
0
GC
26396
RA1950rad
5.00577727
DE1950rad
0.60242322
PmRA2000
0.0043
PmDE2000
0.195
Catalog
H
HIP
94076
Proxy
RAhms
19 09 04.35
DEdms
+34 35 59.9
Vmag
6.7
VarFlag
R Vmag
H
RAdeg
287.268
DEdeg
34.6
AstroRef
A
Plx
20.42
CCDM
19091+3436
N CCDM
I
Nsys
2
Ncomp
1
MultFlag
C
Source
P
Qual
A
M HIP
Theta
Rho
HD
178911
BD
BD+34 3439
CD
CP
Dm number
+34 3439
VIred
0.71
SpType
G1V
R SpType
Coord arcsec 2000
190904.35+343559.9
HIP
94076
Sn
95
So
3
Nc
1
RArad
5.0137746366
DErad
0.6038834967
Plx
19.11
PmRA
51.89
PmDE
196.24
E RArad
1.68
E DErad
2
E Plx
2.35
E pmRA
2.06
E pmDE
2.31
Hpmag
6.8352
E Hpmag
0.0132
SHp
0.066
VA
0
BV
0.643
E BV
0.007
VI
0.71
Ccdm
19091+3436
RComp
Comp
A
Note1
Note2
Discov num
DRAs
-1.67
DDEs
1.1
R dRAs
10
Year
Theta
Rho
Obs
2
Vmag
6.5
Sp
G5
PmNote
*
PmRA
33
PmDE
178
Dm number
+34 3439
Cat1
BD
Name2
+34 1805
Cat2
AGK2/3
HD
178911
M HD
ADS BDS
A12101
M ADS BDS
N IDS
IDS
19054N3426A
HIC
94076
19091+3436 Ab
Coord arcsec 2000
190904.35+343559.9
Mag
8.96
Calc delta mag
2.07
Calc coord
yes
19091+3436 B
Coord arcsec 2000
190903.30+343557.7
Mag
7.88
PmRA
69.00
PmDE
197.0
HIP
94075
Tycho2
2648-02151-1
BD
BD+34 3438
Calc delta mag
0.99
Calc coord
yes
Tycho2
2648-02151-1
Pflag
RAmdeg
287.26292216
DEmdeg
34.59986588
PmRA
69.1
PmDE
196.6
E RAmdeg
6
E DEmdeg
6
E pmRA
5.6
E pmDE
6.0
EpRAm
1991.50
EpDEm
1991.65
Num
3
Q RAmdeg
0.2
Q DEmdeg
0.3
Q pmRA
0.1
Q pmDE
0.4
BTmag
8.723
E BTmag
0.017
VTmag
7.877
E VTmag
0.012
Prox
162
TYC
T
HIP
94075
CCDM
B
RAdeg
287.26272417
DEdeg
34.59941111
EpRA 1990
1.52
EpDE 1990
1.67
E RAdeg
6.4
E DEdeg
5.8
Posflg
Corr
0.1
Catalog
H
HIP
94075
Proxy
RAhms
19 09 03.06
DEdms
+34 35 57.8
Vmag
7.97
VarFlag
R Vmag
H
RAdeg
287.263
DEdeg
34.5994
AstroRef
B
Plx
21.4
CCDM
19091+3436
N CCDM
I
Nsys
2
Ncomp
1
MultFlag
C
Source
I
Qual
A
M HIP
Theta
Rho
HD
BD
BD+34 3438
CD
CP
Dm number
+34 3438
VIred
0.79
SpType
G5
R SpType
Coord arcsec 2000
190903.06+343557.8
HIP
94075
Sn
95
So
3
Nc
1
RArad
5.0136807468
DErad
0.6038729014
Plx
23.48
PmRA
55.14
PmDE
201.3
E RArad
2.73
E DErad
3.59
E Plx
3.95
E pmRA
3.43
E pmDE
4.39
Hpmag
8.2885
E Hpmag
0.0358
SHp
0
VA
0
BV
0.75
E BV
0.015
VI
0.79
Ccdm
19091+3436
RComp
Comp
B
Note1
Note2
Discov num
STF2474
DRAs
-2.85
DDEs
0.1
R dRAs
10
Year
1949
Theta
261
Rho
16.4
Obs
13
Vmag
8.6
Sp
PmNote
*
PmRA
64
PmDE
207
Dm number
+34 3438
Cat1
BD
Name2
+34 1804
Cat2
AGK2/3
HD
M HD
ADS BDS
A12101
M ADS BDS
N IDS
IDS
19054N3426B
HIC
94075
19091+3436 C
Coord arcsec 2000
190909.64+343503.3
Mag
11.42
PmRA
-18.00
PmDE
-19.0
Calc delta mag
4.53
Calc coord
yes