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Current system
18445+3400
STTA 172
HD 173548


Nearby doubles
30' : 18465+3414
COU1153

34' : 18438+3433
SEI 573

36' : 18458+3431
STF2390

38' : 18462+3328
COU1152

41' : 18425+3432
POP 45

41' : 18475+3415
KPP4122

41' : 18427+3326
UC 3651

50' : 18430+3445
SEI 572AB

53' : 18487+3401
HU 936

54' : 18414+3323
TDT 997

54' : 18421+3445
STF2372AB

57' : 18483+3432
POP 43

58' : 18418+3314
KU 119

59' : 18403+3425
HDS2645AB

60' : 18491+3343
UC 3682

64' : 18426+3459
UC 3650

65' : 18464+3500
SLE 367

65' : 18496+3415
COU1155

65' : 18490+3432
YSC 11

67' : 18473+3302
TDS 945

68' : 18488+3319
HJ 1349AB

68' : 18494+3324
J 765

70' : 18394+3430
SEI 568

73' : 18420+3505
SEI 570

73' : 18469+3254
KPP4121

73' : 18416+3503
GRV 237



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18445+3400 STTA 172 (HD 173548)

 
 
18h 44m 30.74s +33° 59' 46.1" P.A. 5.00 sep 64.9 mag 7.91,8.66 Sp F8 dist. 53.94 pc (175.95 l.y.)
 
 
Coord 2000 18445+3400 Discov num STTA172 Comp Coord arcsec 2000 18 44 30.74 +33 59 46.1
Date first 1875 Date last 2018 Obs 30
Pa first 6 Pa last 5.3 P.A. Now (θ) 5.3°
Sep first 65.5 Sep last 64.88 Sep. Now (ρ) 64.88"
Mag pri 7.91 Mag sec 8.66 delta mag (ΔM) 0.75 Spectral class F8 (yellow-white)
Pri motion ra +013 Sec motion ra +012
Pri motion dec -016 Sec motion dec -018
Notes N T (See Notes, Parallax indicates physical)
rPM=0.103 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173548 Constellation Lyra SAO 67311 HIP 91940
Tycho2 2645-00314-1 Gaia DR2 2091495764301335424 HD 173548 BD BD+33 3190
Distance 53.94 Distance ly 175.95
 
 
WDS 18445+3400 STTA 172 (HD 173548) : NOTES
 
 
discov_num notes refcode
STTA172 B is BD+33@3191.
 
 
REFERENCES
 
 
refcode metd author reference
STTA (O. Struve DD - Appendix list) ...................
Stt1864 Ma - Struve, O. 1864MNRAS..24..149S
Stt1864 MNRAS 24, 149, 1864
Stt1866 orb - Struve, O. .
Stt1866 Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874 orb - Struve, O. .
Stt1874 Compte Rendus 79, 1467, 1874
Stt1875 orb - Struve, O. 1875MNRAS..35..367S
Stt1875 MNRAS 35, 367, 1875
Stt1878 Ma - Struve, O. 1878ObPul...9....1S
Stt1878 Pulkova Observations 9, 1, 1878
Stt1879A Ma - Struve, O. 1879Obs.....2..304G
Stt1879A cited by Gledhill (Obs 2, 304, 1879)
Stt1879B Ma - Struve, O. 1879Obs.....3..245G
Stt1879B cited by Gledhill (Obs 3, 245, 1879)
Stt1879C Ma - Struve, O. 1879Obs.....2..344G
Stt1879C cited by Gledhill (Obs 2, 344, 1879)
Stt1880A Ma - Struve, O. 1880Obs.....2..605H
Stt1880A cited by Hunt (Obs. 3, 605, 1880)
Stt1880B Ma - Struve, O. 1880Obs.....3..535G
Stt1880B cited by Gledhill (Obs 3, 535, 1880)
Stt1880C Ma - Struve, O. 1880MNRAS..40..497B
Stt1880C cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A Ma - Struve, O. 1884AReg...22..216S
Stt1884A cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a Ma j Struve, O. 1893ObPul..10....1S
Stt1893a Pulkova Obs. Observations 10, 1, 1893
Stt1906A Ma - Struve, O. 1906MmRAS..56....1L
Stt1906A cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B Ma j Struve, O. 1906QB821.B972.....
Stt1906B cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A Ma - Struve, O. 1908MNRAS..68..465B
Stt1908A cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A Ma - Struve, O. 1913QB811.B8.......
Stt1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A Ma - Struve, O. 1914AN....198..107R
Stt1914A cited by Rabe (AN 198, 107, 1914)
Stt1932A Ma - Struve, O. 1932QB821.A43......
Stt1932A cited in ADS (Aitken Double Star Cat., 1932)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18445+3400 STTA172 2003 22 5 65.2 7.91 8.66 F8 N D 184430.74+335946.1
18445+3400 STTA172 2012 24 6 61.2 7.91 8.66 F8 N D 184430.74+335946.1
18445+3400 STTA172 2015 27 5 65.1 7.91 8.66 F8 N 184430.74+335946.1
18445+3400 STTA172 2018 29 5 64.9 7.91 8.66 F8 NT 184430.74+335946.1

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

 
 
WDS 18445+3400 STTA 172 (HD 173548) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18445+3400 STTA 172 (HD 173548) : MEASURES
 
 
No records found.

 
 
WDS 18445+3400 (HD 173548) : VIRTUAL EYEPIECE
 
 

18445+3400 STTA172A mag 7.91 Sp F8 18445+3400 STTA172B sep 64.8 P.A. 4.40 mag 8.66 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18445+3400 (HD 173548) : ALADIN DSS IMAGE @ 18h 44m 30.74s +33° 59' 46.1"
 
 
 
 
WDS 18445+3400 STTA 172 (HD 173548) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18445+3400 STTA172 distance=0' 18465+3414 COU1153 distance=30' 18438+3433 SEI 573 distance=34' 18458+3431 STF2390 distance=36' 18462+3328 COU1152 distance=38' 18425+3432 POP 45 distance=41' 18475+3415 KPP4122 distance=41' 18427+3326 UC 3651 distance=41' 18430+3445 SEI 572AB distance=50' 18430+3445 BKO 52AC distance=50' 18430+3445 BKO 52BD distance=50' 18487+3401 HU 936 distance=53' 18421+3445 BLL 34BC distance=54' 18414+3323 TDT 997 distance=54' 18421+3445 B 2546Aa,Ab distance=54' 18421+3445 STF2372AB distance=54' 18421+3445 BLL 34AC distance=54' 18483+3432 POP 43 distance=57' 18418+3314 KU 119 distance=58' 18403+3425 HDS2645AB distance=59' 18403+3425 GII 270Aa,Ab distance=59' 18491+3343 UC 3682 distance=60' 18426+3459 UC 3650 distance=64' 18464+3500 SLE 367 distance=65' 18496+3415 COU1155 distance=65' 18490+3432 YSC 11 distance=65' 18473+3302 TDS 945 distance=67' 18488+3319 HJ 1349AB distance=68' 18494+3324 J 765 distance=68' 18394+3430 SEI 568 distance=70' 18420+3505 SEI 570 distance=73' 18469+3254 KPP4121 distance=73' 18416+3503 GRV 237 distance=73' 18495+3316 STF2407 distance=77' 18501+3322 BU 293EF distance=79' 18501+3322 RBR 11Aa,Ab distance=80' 18501+3322 STFA 39AB (Sheliak) distance=80' 18501+3322 BU 293AC (Sheliak) distance=80' 18501+3322 BU 293AD (Sheliak) distance=80' 18501+3322 BU 293AE (Sheliak) distance=80' 18501+3322 BU 293AF (Sheliak) distance=80' 18501+3322 CIA 3Aa1,2 (Sheliak) distance=80' 18501+3322 BU 293BE distance=80' 18501+3322 BU 293BF distance=80' 18461+3242 SEI 575 distance=81' 18380+3417 LDS4793 distance=83' 18476+3248 COU1154 distance=83' 18447+3237 LDS4797 distance=83' 18380+3416 CRB 128 distance=83' 18493+3301 ES 2287 distance=85' 18377+3346 TDT 963 distance=87' grafico limitrofi
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 18445+3400 STTA172 5 64.9
Show 18465+3414 COU1153 116 0.4 30
Show 18438+3433 SEI 573 298 20.9 34
Show 18458+3431 STF2390 155 4.3 36
Show 18462+3328 COU1152 259 1.7 38
Show 18425+3432 POP 45 275 6.8 41
Show 18475+3415 KPP4122 53 4.1 41
Show 18427+3326 UC 3651 218 10.7 41
Show 18430+3445 SEI 572 AB 53 22.3 50
Show 18430+3445 BKO 52 AC 147 18.7 50
Show 18430+3445 BKO 52 BD 82 7.5 50
Show 18487+3401 HU 936 101 1.8 53
Show 18421+3445 BLL 34 BC 65 91.1 54
Show 18414+3323 TDT 997 139 0.6 54
Show 18421+3445 B 2546 Aa,Ab 24 0.1 54
Show 18421+3445 STF2372 AB 82 25.0 54
Show 18421+3445 BLL 34 AC 69 114.0 54
Show 18483+3432 POP 43 297 2.6 57
Show 18418+3314 KU 119 86 20.6 58
Show 18403+3425 HDS2645 AB 19 1.9 59
Show 18403+3425 GII 270 Aa,Ab 109 0.2 59
Show 18491+3343 UC 3682 310 18.4 60
Show 18426+3459 UC 3650 159 22.3 64
Show 18464+3500 SLE 367 290 18.5 65
Show 18496+3415 COU1155 223 3.3 65
Show 18490+3432 YSC 11 55 0.4 65
Show 18473+3302 TDS 945 318 1.5 67
Show 18488+3319 HJ 1349 AB 93 29.9 68
Show 18494+3324 J 765 333 2.3 68
Show 18394+3430 SEI 568 192 10.5 70
Show 18420+3505 SEI 570 131 9.4 73
Show 18469+3254 KPP4121 75 6.5 73
Show 18416+3503 GRV 237 176 57.8 73
Show 18495+3316 STF2407 207 30.0 77
Show 18501+3322 BU 293 EF 66 79.4 79
Show 18501+3322 RBR 11 Aa,Ab 176 0.5 80
Show Sheliak 18501+3322 STFA 39 AB 149 45.7 80
Show Sheliak 18501+3322 BU 293 AC 247 46.8 80
Show Sheliak 18501+3322 BU 293 AD 68 64.0 80
Show Sheliak 18501+3322 BU 293 AE 317 67.2 80
Show Sheliak 18501+3322 BU 293 AF 18 86.0 80
Show Sheliak 18501+3322 CIA 3 Aa1,2 88 0.0 80
Show 18501+3322 BU 293 BE 322 112.4 80
Show 18501+3322 BU 293 BF 1 120.6 80
Show 18461+3242 SEI 575 263 28.6 81
Show 18380+3417 LDS4793 182 54.2 83
Show 18476+3248 COU1154 57 0.6 83
Show 18447+3237 LDS4797 28 47.5 83
Show 18380+3416 CRB 128 148 11.7 83
Show 18493+3301 ES 2287 292 3.8 85
Show 18377+3346 TDT 963 148 1.2 87

 
 
WDS 18445+3400 : COMPONENTS
 
 
  A
B pa=4.4°
sep=64.79"
 
 
18445+3400 A
 
 
Componente originario normalizzato AB Name HD 173548 Coord arcsec 2000 184430.74+335946.1 Mag 7.91
Spectral class F8 (yellow-white) PmRA 13.00 PmDE -16.0 SAO 67311
HIP 91940 Tycho2 2645-00314-1 HD 173548 BD BD+33 3190
Tycho2
Tycho2 2645-00314-1 Pflag RAmdeg 281.12806671 DEmdeg 33.99613536
PmRA 12.9 PmDE -12.4 E RAmdeg 5 E DEmdeg 5
E pmRA 1.4 E pmDE 1.5 EpRAm 1991.34 EpDEm 1991.31
Num 9 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 0.9 BTmag 8.460 E BTmag 0.015 VTmag 7.914
E VTmag 0.011 Prox 652 TYC T HIP 91940
CCDM RAdeg 281.12803056 DEdeg 33.99616417 EpRA 1990 1.61
EpDE 1990 1.57 E RAdeg 5.1 E DEdeg 5.4 Posflg
Corr 0.0
SAO
SAO 67311 DelFlag RA1950 PmRA1950 0.0002
DE1950 PmDE1950 -0.021 Vmag 8 SpType F8
Double code Source 6 CatNum 1671 DM BD+33 3190
DMcomp BDsup HD 173548 M HD 0
GC RA1950rad 4.89863556 DE1950rad 0.59242707 PmRA2000 0.0005
PmDE2000 -0.021
Hipparcos
Catalog H HIP 91940 Proxy RAhms 18 44 30.73
DEdms +33 59 46.2 Vmag 7.84 VarFlag R Vmag G
RAdeg 281.128 DEdeg 33.9962 AstroRef Plx 19.39
CCDM 18445+3400 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 173548 BD BD+33 3190
CD CP Dm number +33 3190 VIred 0.63
SpType F8 R SpType Coord arcsec 2000 184430.73+335946.2
Hipparcos 2
HIP 91940 Sn 5 So 0 Nc 1
RArad 4.9066097603 DErad 0.5933450594 Plx 18.54 PmRA 13.38
PmDE -16.19 E RArad 0.49 E DErad 0.58 E Plx 0.72
E pmRA 0.61 E pmDE 0.84 Hpmag 7.9613 E Hpmag 0.0015
SHp 0.016 VA 0 BV 0.559 E BV 0.015
VI 0.63
CCDM
Ccdm 18445+3400 RComp Comp A Note1
Note2 Discov num DRAs 0.88 DDEs -13.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.0 Sp F8 PmNote *
PmRA 39 PmDE -9 Dm number +33 3190 Cat1 BD
Name2 +33 1671 Cat2 AGK2/3 HD 173548 M HD
ADS BDS B 8778 M ADS BDS N IDS IDS 18408N3353A
HIC 91940
 
 
18445+3400 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184431.14+340050.7 Mag 8.66 PmRA 12.00
PmDE -18.0 Tycho2 2645-00367-1 Calc delta mag 0.75 Calc coord yes
Tycho2
Tycho2 2645-00367-1 Pflag RAmdeg 281.13011833 DEmdeg 34.01415903
PmRA 13.7 PmDE -15.7 E RAmdeg 8 E DEmdeg 9
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.00 EpDEm 1990.66
Num 9 Q RAmdeg 0.8 Q DEmdeg 0.9 Q pmRA 0.7
Q pmDE 0.9 BTmag 9.356 E BTmag 0.020 VTmag 8.663
E VTmag 0.015 Prox 652 TYC T HIP
CCDM RAdeg 281.13008028 DEdeg 34.01419556 EpRA 1990 1.69
EpDE 1990 1.51 E RAdeg 7.5 E DEdeg 9.3 Posflg
Corr -0.1
CCDM
Ccdm 18445+3400 RComp Comp B Note1
Note2 Discov num STT4172 DRAs 1.19 DDEs 50.8
R dRAs 10 Year 1875 Theta 006 Rho 65.5
Obs 6 Vmag 8.7 Sp PmNote *
PmRA 4 PmDE -18 Dm number +33 3191 Cat1 BD
Name2 +33 1672 Cat2 AGK2/3 HD M HD
ADS BDS B 8778 M ADS BDS N IDS IDS 18408N3353B
HIC