stampa
Login

Keep tracks of you favourite doubles.
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
19448+2916
ISM 4 Aa,Ab


Nearby doubles
14' : 19444+2903
J 1240AB

18' : 19462+2917
TDT1721

19' : 19434+2908
MLB 474

28' : 19464+2852
J 3002

30' : 19465+2851
J 3003

30' : 19421+2934
OL 121

30' : 19431+2935
TDT1670

31' : 19459+2849
TDT1717

32' : 19431+2854
A 372

34' : 19452+2843
TDT1707

34' : 19423+2906
SLE 674

36' : 19448+2840
TDT1698

37' : 19422+2930
HDS2794

38' : 19420+2910
SLE 673

39' : 19420+2906
SLE 672

41' : 19477+2924
BRT 43

42' : 19418+2929
SLE 671

43' : 19421+2852
MLB 527

49' : 19415+2937
SLE 670

51' : 19421+2840
FMR 152

51' : 19474+2838
BRT 42

53' : 19466+2829
TDT1730

54' : 19407+2911
SLE 665AB

55' : 19413+2944
SLE 668

57' : 19474+2831
TDT1752

58' : 19479+2956
TDT1763



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.

19448+2916 ISM 4 Aa,Ab

 
 
19h 44m 48.74s +29° 15' 52.9" P.A. 167.00 sep 0.0 mag 7.00,8.00 Sp F2Iab+B8V dist. 787.4 pc (2568.5 l.y.)
 
 
Coord 2000 19448+2916 Discov num ISM   4 Comp Aa,Ab Coord arcsec 2000 19 44 48.74 +29 15 52.9
Date first 1949 Date last 1988 Obs 4
Pa first 119 Pa last 166.7 P.A. Now (θ) 166.7°
Sep first 0.1 Sep last 0.041 Sep. Now (ρ) 0.041"
Mag pri 7.00 Mag sec 8.00 delta mag (ΔM) 1 Spectral class F2Iab+B8V (yellow-white/blue-white)
Pri motion ra +000 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
19448+2916 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 87659 19 44 49 +29 15 53 ISM 4 Aa,Ab 1988 4 167 0.0 7.00 8.00 1.00 <===
Show SU Cyg 87659 19 44 49 +29 15 53 WRH 23 AE 2015 10 289 24.8 7.03 10.54 3.51
Show 87659 19 44 49 +29 15 53 WRH 23 AF 2015 9 18 71.1 7.03 10.88 3.85
Show 87659 19 44 49 +29 15 53 WRH 23 AG 2015 9 88 75.9 7.03 10.21 3.18
Show 87659 19 44 49 +29 15 53 EVS 42 AH 2015 2 87 25.4 6.90 16.90 10.00
Show 87659 19 44 49 +29 15 53 KRV 40 AI 2015 1 34 42.4 6.90 19.20 12.30
Septuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name SU Cyg Constellation Cygnus SAO 87659 HIP 97150
Tycho2 2151-05896-1 Gaia DR2 2031776202613700480 HD 186688 HR 7518
BD BD+28 3460 Distance 787.4 Distance ly 2568.5
 
 
WDS 19448+2916 ISM 4 Aa,Ab : NOTES
 
 
discov_num notes refcode
ISM 4 The Cepheid SU Cyg. This is also known as WRH 23Aa,Ab. The Wilson
component were previously assigned to 19372+2920, but this was a
position error on Wilson's part leading to the the pairs not being WRH1950a
confirmed for many years. The wider components of Wilson will retain
their historical, AE, AF, and AG component identifiers. The closer
Aa,Ab pair will remain ISM 4. The problem was noted by Cliff
Ashcraft and the correct system found by James Daley.
Masses are 4.7 and 3.2 Msun. Estimated period = 1.5y,
a = 2.6au = 0.003". Evs2013
 
 
REFERENCES
 
 
refcode metd author reference
Evs2013 Hp j Evans, N.R., Bond, H.E., Schaefer, G.H., Mason, B.D., Karovska, M., & Tingle, E. 2013AJ....146...93E
Evs2013 +X AJ 146, 93, 2013
WRH1950a J j Wilson, R.H. 1950AJ.....55..153W
WRH1950a +Ma AJ 55, 153, 1950
WRH1950a (U and T coded observations per van den Bos, J Obs 34, 85, 1951) 1951JO.....34...85V
 
 
DISCOVERER
 
 
idgroup discov author
1 ISM Ismailov, R.M.
2 KRV Kervella, P., Thevenin, F., & Petr-Gotzens, M.G.
11 KRV Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A.,
11 KRV Proto, Y., Karczmarek, P., Nardetto, N., Gieren, W. & Pietrzynski, G.
12 KRV Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A.,
12 KRV Nardetto, N., Gieren, W. & Pietrzynski, G.
14 KRV Kervella, P., Borgniet, S., de Souza, A.D., Merand, A., Gallenne, A., Rivinius, T.,
14 KRV Lacour, S., Carciofi, A., Faes, D.M., Le Bouquin, J.-B., Taormina, M., Pilecki, B.,
14 KRV Berger, J.-P., Bendjoya, P., Klement, R., Millour, F., Janot-Pacheco, E., Spang, A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19448+2916 ISM 4 Aa,Ab 1988 4 167 0.0 7.00 8.00 F2Iab N 194448.74+291552.9

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

 
 
WDS 19448+2916 ISM 4 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19448+2916 ISM 4 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 19448+2916 : VIRTUAL EYEPIECE
 
 

19448+2916 WRH 23A mag 7.03 Sp F2I 19448+2916 ISM 4Ab mag 8 Sp B8V 19448+2916 WRH 23E sep 22.0 P.A. 291.80 mag 10.54 19448+2916 WRH 23F sep 70.3 P.A. 16.20 mag 10.88 19448+2916 WRH 23G sep 66.2 P.A. 87.40 mag 10.21 19448+2916 EVS 42H sep 22.1 P.A. 86.40 mag 16.9 19448+2916 KRV 40I sep 40.8 P.A. 30.80 mag 19.2 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 19448+2916 : ALADIN DSS IMAGE @ 19h 44m 48.74s +29° 15' 52.9"
 
 
 
 
WDS 19448+2916 ISM 4 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19448+2916 ISM 4Aa,Ab distance=1' 19448+2916 WRH 23AE distance=1' 19448+2916 WRH 23AF distance=1' 19448+2916 WRH 23AG distance=1' 19448+2916 EVS 42AH distance=1' 19448+2916 KRV 40AI distance=1' 19444+2903 J 1240BC distance=13' 19444+2903 J 1240AB distance=14' 19462+2917 TDT1721 distance=18' 19434+2908 MLB 474 distance=19' 19464+2852 J 3002 distance=28' 19465+2851 J 3003 distance=30' 19421+2934 OL 121 distance=30' 19431+2935 TDT1670 distance=30' 19459+2849 TDT1717 distance=31' 19431+2854 A 372 distance=32' 19452+2843 TDT1707 distance=34' 19423+2906 SLE 674 distance=34' 19448+2840 TDT1698 distance=36' 19422+2930 HDS2794 distance=37' 19420+2910 SLE 673 distance=38' 19420+2906 SLE 672 distance=39' 19477+2924 BRT 43 distance=41' 19418+2929 SLE 671 distance=42' 19421+2852 MLB 527 distance=43' 19415+2937 SLE 670 distance=49' 19421+2840 FMR 152 distance=51' 19474+2838 BRT 42 distance=51' 19466+2829 TDT1730 distance=53' 19407+2911 SLE 665AB distance=54' 19407+2911 SLE 665AC distance=54' 19413+2944 SLE 668 distance=55' 19474+2831 TDT1752 distance=57' 19479+2956 TDT1763 distance=58' 19404+2913 SLE 663 distance=59' 19429+2822 HDS2797 distance=60' 19414+2959 BRT 41 distance=60' 19413+2835 MLB 526 distance=62' 19402+2904 SLE 662 distance=62' 19442+3015 HJ 1434 distance=62' 19410+2838 SLE 666 distance=63' 19473+2819 MLB 528 distance=64' 19443+3021 BEW 3 distance=66' 19498+2933 TDT1784 distance=68' 19409+2828 SLE 667AB distance=70' 19473+3018 GRV 278 distance=72' 19480+3016 BRT 44 distance=74' 19493+3000 TDT1778 distance=74' 19396+2945 STF2557AB distance=75' 19396+2945 BU 54AC distance=75' 19396+2945 ABH 124AD distance=75' 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 19448+2916 ISM 4 Aa,Ab 167 0.0 1
Show 19448+2916 WRH 23 AE 289 24.8 1
Show 19448+2916 WRH 23 AF 18 71.1 1
Show 19448+2916 WRH 23 AG 88 75.9 1
Show 19448+2916 EVS 42 AH 87 25.4 1
Show 19448+2916 KRV 40 AI 34 42.4 1
Show 19444+2903 J 1240 BC 355 3.2 13
Show 19444+2903 J 1240 AB 97 66.3 14
Show 19462+2917 TDT1721 195 0.7 18
Show 19434+2908 MLB 474 331 3.8 19
Show 19464+2852 J 3002 223 8.5 28
Show 19465+2851 J 3003 198 8.3 30
Show 19421+2934 OL 121 221 0.9 30
Show 19431+2935 TDT1670 308 1.5 30
Show 19459+2849 TDT1717 6 0.6 31
Show 19431+2854 A 372 195 0.1 32
Show 19452+2843 TDT1707 19 0.6 34
Show 19423+2906 SLE 674 236 5.8 34
Show 19448+2840 TDT1698 114 2.9 36
Show 19422+2930 HDS2794 262 0.1 37
Show 19420+2910 SLE 673 182 7.1 38
Show 19420+2906 SLE 672 62 11.2 39
Show 19477+2924 BRT 43 108 4.7 41
Show 19418+2929 SLE 671 260 10.1 42
Show 19421+2852 MLB 527 166 6.5 43
Show 19415+2937 SLE 670 164 10.0 49
Show 19421+2840 FMR 152 24 57.0 51
Show 19474+2838 BRT 42 129 5.0 51
Show 19466+2829 TDT1730 30 1.2 53
Show 19407+2911 SLE 665 AB 283 7.2 54
Show 19407+2911 SLE 665 AC 50 11.2 54
Show 19413+2944 SLE 668 268 10.9 55
Show 19474+2831 TDT1752 128 2.9 57
Show 19479+2956 TDT1763 89 2.7 58
Show 19404+2913 SLE 663 41 4.3 59
Show 19429+2822 HDS2797 129 0.2 60
Show 19414+2959 BRT 41 156 3.7 60
Show 19413+2835 MLB 526 12 8.0 62
Show 19402+2904 SLE 662 49 14.7 62
Show 19442+3015 HJ 1434 300 8.3 62
Show 19410+2838 SLE 666 283 5.4 63
Show 19473+2819 MLB 528 25 6.9 64
Show 19443+3021 BEW 3 302 11.5 66
Show 19498+2933 TDT1784 57 0.7 68
Show 19409+2828 SLE 667 AB 46 7.3 70
Show 19473+3018 GRV 278 208 13.4 72
Show 19480+3016 BRT 44 177 3.3 74
Show 19493+3000 TDT1778 159 1.9 74
Show 19396+2945 STF2557 AB 103 11.0 75
Show 19396+2945 BU 54 AC 304 21.8 75
Show 19396+2945 ABH 124 AD 147 47.8 75

 
 
WDS 19448+2916 : COMPONENTS
 
 
  A Ab E F G H
Ab pa=168.3°
sep=0.04"
 
E pa=291.8°
sep=22.02"
pa=291.8°
sep=22.04"
 
F pa=16.2°
sep=70.29"
pa=16.2°
sep=70.33"
pa=34.0°
sep=71.59"
 
G pa=87.4°
sep=66.23"
pa=87.3°
sep=66.22"
pa=93.4°
sep=86.75"
pa=144.2°
sep=79.52"
 
H pa=86.4°
sep=22.15"
pa=86.3°
sep=22.15"
pa=99.1°
sep=43.09"
pa=177.8°
sep=66.18"
pa=267.8°
sep=44.08"
 
I pa=30.8°
sep=40.79"
pa=30.7°
sep=40.82"
pa=56.9°
sep=49.28"
pa=177.8°
sep=32.48"
pa=305.2°
sep=55.46"
pa=357.9°
sep=33.70"
 
 
19448+2916 A
 
 
Var name SU Cyg Coord arcsec 2000 194448.74+291552.9 Mag 7.03 Spectral class F2I (yellow-white)
PmRA 0.00 PmDE -4.0 SAO 87659 HIP 97150
Tycho2 2151-05896-1 HD 186688 HR 7518 GC 27336
BD BD+28 3460
Tycho2
Tycho2 2151-05896-1 Pflag RAmdeg 296.20306529 DEmdeg 29.26469320
PmRA 2.2 PmDE -2.4 E RAmdeg 4 E DEmdeg 4
E pmRA 1.2 E pmDE 1.1 EpRAm 1991.35 EpDEm 1991.46
Num 15 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.7
Q pmDE 0.7 BTmag 7.716 E BTmag 0.015 VTmag 7.028
E VTmag 0.010 Prox 248 TYC T HIP 97150
CCDM RAdeg 296.20305917 DEdeg 29.26469861 EpRA 1990 1.59
EpDE 1990 1.71 E RAdeg 4.4 E DEdeg 4.1 Posflg
Corr 0.1
SAO
SAO 87659 DelFlag RA1950 PmRA1950 -0.0001
DE1950 PmDE1950 0 Vmag 6.4 SpType F2p
Double code Source 70 CatNum 27336 DM BD+28 3460
DMcomp BDsup HD 186688 M HD 0
GC 27336 RA1950rad 5.16097559 DE1950rad 0.50863795 PmRA2000 0.0001
PmDE2000 -0.002
Hipparcos
Catalog H HIP 97150 Proxy RAhms 19 44 48.73
DEdms +29 15 52.9 Vmag 6.97 VarFlag 3 R Vmag T
RAdeg 296.203 DEdeg 29.2647 AstroRef Plx 0.51
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 186688 BD BD+28 3460
CD CP Dm number +28 3460 VIred 0.69
SpType F2Iab: R SpType Coord arcsec 2000 194448.73+291552.9
Hipparcos 2
HIP 97150 Sn 5 So 0 Nc 1
RArad 5.1697186348 DErad 0.51076536 Plx 1.27 PmRA 0.26
PmDE -3.86 E RArad 0.43 E DErad 0.61 E Plx 0.86
E pmRA 0.56 E pmDE 0.85 Hpmag 7.0885 E Hpmag 0.026
SHp 0.263 VA 1 BV 0.65 E BV 0.026
VI 0.71
 
 
19448+2916 Ab
 
 
Coord arcsec 2000 194448.74+291552.9 Mag 8 Spectral class B8V (blue-white) Calc delta mag 1
Calc coord yes
 
 
19448+2916 E
 
 
Coord arcsec 2000 194447.18+291601.1 Mag 10.54 PmRA -1.00 PmDE -2.0
Calc delta mag 3.54 Calc coord yes
 
 
19448+2916 F
 
 
Coord arcsec 2000 194450.24+291700.4 Mag 10.88 PmRA 7.00 PmDE -9.0
Calc delta mag 3.88 Calc coord yes
 
 
19448+2916 G
 
 
Coord arcsec 2000 194453.80+291555.9 Mag 10.21 PmRA 3.00 PmDE -5.0
Tycho2 2151-04816-1 HD 332545 Calc delta mag 3.21 Calc coord yes
Tycho2
Tycho2 2151-04816-1 Pflag RAmdeg 296.22721462 DEmdeg 29.26556649
PmRA 1.8 PmDE -3.2 E RAmdeg 37 E DEmdeg 25
E pmRA 1.9 E pmDE 1.8 EpRAm 1987.08 EpDEm 1989.80
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.2 BTmag 11.443 E BTmag 0.073 VTmag 10.211
E VTmag 0.040 Prox 759 TYC T HIP
CCDM RAdeg 296.22720944 DEdeg 29.26557361 EpRA 1990 1.50
EpDE 1990 1.81 E RAdeg 38.2 E DEdeg 25.4 Posflg
Corr 0.1
 
 
19448+2916 H
 
 
Coord arcsec 2000 194450.43+291554.3 Mag 16.9 Calc delta mag 9.9 Calc coord yes
 
 
19448+2916 I
 
 
Coord arcsec 2000 194450.33+291628.0 Mag 19.2 Calc delta mag 12.2 Calc coord yes