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Doubles in session


Current system
21156+3715
HO 285 AB


Nearby doubles
5' : 21155+3719
MLB 424AB

6' : 21151+3716
SEI1472

9' : 21152+3722
TDT2859

16' : 21149+3702
COU1818

21' : 21168+3729
TDT2880

22' : 21147+3734
SEI1465

22' : 21138+3711
COU1816AB

23' : 21168+3659
TDT2881

23' : 21174+3711
SEI1491

27' : 21151+3741
SEI1474

31' : 21154+3745
SMA 146

32' : 21135+3658
SEI1453

32' : 21129+3717
SEI1449

33' : 21161+3747
COU1819

33' : 21133+3734
ES 208

35' : 21130+3732
HEI 283AB

38' : 21133+3744
SMA 141

38' : 21133+3743
SMA 142

41' : 21144+3753
SEI1460

42' : 21130+3648
SEI1452

42' : 21151+3634
SEI1473

43' : 21145+3635
SEI1462

43' : 21123+3658
TDT2823

44' : 21140+3755
SEI1457

45' : 21148+3631
SEI1468

46' : 21137+3635
LDT 19



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.

21156+3715 HO 285 AB

 
 
21h 15m 34.01s +37° 15' 08.5" P.A. 22.00 sep 9.2 mag 7.75,12.90 Sp B4V dist. 20000 pc (65240 l.y.)
 
 
Coord 2000 21156+3715 Discov num HO  285 Comp AB Coord arcsec 2000 21 15 34.01 +37 15 08.5
Date first 1888 Date last 2015 Obs 9
Pa first 25 Pa last 22.2 P.A. Now (θ) 22.2°
Sep first 8.6 Sep last 9.187 Sep. Now (ρ) 9.187"
Mag pri 7.75 Mag sec 12.90 delta mag (ΔM) 5.15 Spectral class B4V (blue-white)
Pri motion ra +001 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21156+3715 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 71128 21 15 34 +37 15 08 HO 285 AB 2015 9 22 9.2 7.75 12.90 5.15 <===
Show HD 202569 71128 21 15 34 +37 15 08 WAL 138 AC 2015 8 29 57.3 7.75 12.44 4.69
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 71128 HIP 104952 Tycho2 2714-02251-1
Gaia DR2 1868634030180516608 HD 202569 BD BD+36 4492 Distance 20000
Distance ly 65240
 
 
WDS 21156+3715 HO 285 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Ho_1883 Ma j Hough, G.W. 1883MNRAS..43..371H
Ho_1883 MNRAS 43, 371, 1883 (data also in Ho_1890) 1890AN....125....1H
Ho_1884 Ma j Hough, G.W. 1884MNRAS..44..365H
Ho_1884 MNRAS 44, 365, 1884 (data also in Ho_1890) 1890AN....125....1H
Ho_1885 Ma j Hough, G.W. 1885MNRAS..45..417H
Ho_1885 MNRAS 45, 417, 1885 (data also in Ho_1890) 1890AN....125....1H
Ho_1886 Ma j Hough, G.W. 1886MNRAS..46..393H
Ho_1886 MNRAS 46, 393, 1886 (data also in Ho_1890) 1890AN....125....1H
Ho_1887 Ma j Hough, G.W. 1887AN....116..273H
Ho_1887 AN 116, 273, 1887
Ho_1890 Ma j Hough, G.W. 1890AN....125....1H
Ho_1890 AN 125, 1, 1890
Ho_1890b Ma j Hough, G.W. 1890AJ......9..177H
Ho_1890b AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) 1890AN....125....1H
Ho_1894a Ma - Hough, G.W. 1894MNRAS..54..251H
Ho_1894a MNRAS 54, 251, 1894
Ho_1894b Ma j Hough, G.W. (HO 304 - 490) 1894AN....135..281H
Ho_1894b AN 135, 281, 1894
Ho_1894c Ma - Hough, G.W. (measure by Dembowski, H.) 1894AN....135..281H
Ho_1894c AN 135, 281, 1894
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
Ho_1899b Ma - Hough, G.W. (measure by Burnham, S.W.) 1899AN....149..65H
Ho_1899b AN 149, 65, 1899
Ho_1907 Ma - Hough, G.W. 1907PFAO....3c...1D
Ho_1907 Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle)
Ho_1932A Ma - Hough, G.W. 1932QB821.A43......
Ho_1932A cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox)
Wal1934 Ma j Wallenquist, A. 1934AnBos...6....3W
Wal1934 Ann. Bosscha Obs. Lembang 6, Pt.2, 1934
Wal1944a Zw - Wallenquist, A. 1954MeUpp...85.....
Wal1944a Medd. Uppsala Obs. #85, 1944
Wal1944a (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944a given for measures; default date = decade of publication added.)
Wal1944b Zw - Wallenquist, A. 1954MeUpp...87.....
Wal1944b Medd. Uppsala Obs. #87, 1944
Wal1944b (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944b given for measures; default date = decade of publication added.)
Wal1947 Zw - Wallenquist, A. 1947UppAn...2....2W
Wal1947 Ann. Uppsala Astron. Obs. 2, No.2, 1947
Wal1947 (A catalogue containing results of the two prior series, plus additional measures
Wal1947 with the 14-inch refractor and wedge photometer)
Wal1948 Zw - Wallenquist, A. 1948UppAn...2....3W
Wal1948 Ann. Uppsala Astron Obs. 2, #3, 1948
Wal1948 (Visual measures of southern double stars made with 17-inch refractor of La Plata
Wal1948 and wedge photometer. No dates listed; default date = decade of publication added)
Wal1950 Zd - Wallenquist, A. 1950MeUpp..103.....
Wal1950 Medd. Uppsala Obs. #103, 1950
Wal1954 Zw - Wallenquist, A. 1954UppAn...4Q....W
Wal1954 Ann. Uppsala Astron Obs. 4, #2, 1954
Wal1954 ("General Catalogue of Differences in Magnitude of Double Stars". Weighted mean
Wal1954 values from numerous sources)
Wal1958 Zw - Wallenquist, A. 1958MeUpp..118.....
Wal1958 Medd. Uppsala Obs. #118, 1958
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21156+3715 HO 285 AB 1998 4 23 9.2 7.75 12.90 B4V D 211534.01+371508.5
21156+3715 HO 285 AB 2002 5 23 9.2 7.75 12.90 B4V D 211534.01+371508.5
21156+3715 HO 285 AB 2010 6 23 9.0 7.75 12.90 B4V 211534.01+371508.5
21156+3715 HO 285 AB 2015 6 22 9.2 7.75 12.90 B4V 211534.01+371508.5

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

 
 
WDS 21156+3715 HO 285 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21156+3715 HO 285 AB : MEASURES
 
 
No records found.

 
 
WDS 21156+3715 : VIRTUAL EYEPIECE
 
 

21156+3715 HO 285A mag 7.75 Sp B4V 21156+3715 HO 285B sep 8.9 P.A. 18.00 mag 12.9 21156+3715 WAL 138C sep 54.8 P.A. 23.50 mag 12.44 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 21156+3715 : ALADIN DSS IMAGE @ 21h 15m 34.01s +37° 15' 08.5"
 
 
 
 
WDS 21156+3715 HO 285 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21156+3715 HO 285AB distance=0' 21155+3719 MLB 424AB distance=5' 21155+3719 SEI1478AC distance=5' 21151+3716 SEI1472 distance=6' 21152+3722 TDT2859 distance=9' 21149+3702 COU1818 distance=16' 21168+3729 TDT2880 distance=21' 21147+3734 SEI1465 distance=22' 21138+3711 COU1816AB distance=22' 21138+3711 WSI 37AC distance=22' 21168+3659 TDT2881 distance=23' 21174+3711 SEI1491 distance=23' 21151+3741 SEI1474 distance=27' 21154+3745 SMA 146 distance=31' 21135+3658 SEI1453 distance=32' 21129+3717 SEI1449 distance=32' 21161+3747 COU1819 distance=33' 21133+3734 ES 208 distance=33' 21130+3732 HEI 283BC distance=35' 21130+3732 HEI 283AB distance=35' 21125+3720 FOX 41BC distance=37' 21125+3720 HJ 1623A,BC distance=37' 21133+3744 SMA 141 distance=38' 21133+3743 SMA 142 distance=38' 21144+3753 SEI1460 distance=41' 21130+3648 SEI1452 distance=42' 21151+3634 SEI1473 distance=42' 21145+3635 SEI1462 distance=43' 21123+3658 TDT2823 distance=43' 21140+3755 SEI1457 distance=44' 21148+3631 SEI1468 distance=45' 21137+3635 LDT 19 distance=46' 21148+3803 JOD 20Fa,Fb distance=48' 21148+3803 DAL 38GH distance=48' 21184+3749 SEI1495 distance=48' 21148+3803 AGC 13AB distance=49' 21148+3803 AGC 13AC distance=49' 21148+3803 AGC 13AE distance=49' 21148+3803 AGC 13AF distance=49' 21148+3803 DAL 38AG distance=49' 21148+3803 LEP 100AI distance=49' 21148+3803 AGC 13AB,D distance=49' 21148+3803 FYM 110AK distance=49' 21148+3803 FYM 110AJ distance=49' 21148+3803 FYM 110AL distance=49' 21138+3800 KPP 786 distance=50' 21144+3803 SEI1461AB distance=51' 21144+3803 GUR 21AC distance=51' 21167+3803 DAM1262 distance=51' 21143+3627 SEI1459 distance=51' 21154+3624 SEI1476 distance=52' 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 21156+3715 HO 285 AB 22 9.2
Show 21156+3715 WAL 138 AC 29 57.3
Show 21155+3719 MLB 424 AB 63 5.1 5
Show 21155+3719 SEI1478 AC 217 9.7 5
Show 21151+3716 SEI1472 97 23.0 6
Show 21152+3722 TDT2859 248 1.7 9
Show 21149+3702 COU1818 31 1.4 16
Show 21168+3729 TDT2880 61 0.4 21
Show 21147+3734 SEI1465 33 25.6 22
Show 21138+3711 COU1816 AB 248 1.8 22
Show 21138+3711 WSI 37 AC 336 10.0 22
Show 21168+3659 TDT2881 130 0.5 23
Show 21174+3711 SEI1491 294 14.7 23
Show 21151+3741 SEI1474 22 20.0 27
Show 21154+3745 SMA 146 7 4.5 31
Show 21135+3658 SEI1453 271 28.3 32
Show 21129+3717 SEI1449 295 13.9 32
Show 21161+3747 COU1819 329 0.7 33
Show 21133+3734 ES 208 142 3.8 33
Show 21130+3732 HEI 283 BC 80 3.3 35
Show 21130+3732 HEI 283 AB 73 35.7 35
Show 21125+3720 FOX 41 BC 124 0.9 37
Show 21125+3720 HJ 1623 A,BC 152 15.3 37
Show 21133+3744 SMA 141 149 7.3 38
Show 21133+3743 SMA 142 176 12.4 38
Show 21144+3753 SEI1460 259 6.9 41
Show 21130+3648 SEI1452 336 26.5 42
Show 21151+3634 SEI1473 99 21.9 42
Show 21145+3635 SEI1462 231 11.2 43
Show 21123+3658 TDT2823 149 2.2 43
Show 21140+3755 SEI1457 27 10.6 44
Show 21148+3631 SEI1468 245 19.0 45
Show 21137+3635 LDT 19 6 0.4 46
Show 21148+3803 JOD 20 Fa,Fb 349 0.9 48
Show 21148+3803 DAL 38 GH 108 8.6 48
Show 21184+3749 SEI1495 273 14.8 48
Show 21148+3803 AGC 13 AB 190 1.1 49
Show 21148+3803 AGC 13 AC 211 73.0 49
Show 21148+3803 AGC 13 AE 257 86.9 49
Show 21148+3803 AGC 13 AF 184 89.5 49
Show 21148+3803 DAL 38 AG 109 120.9 49
Show 21148+3803 LEP 100 AI 77 534.5 49
Show 21148+3803 AGC 13 AB,D 208 205.4 49
Show 21148+3803 FYM 110 AK 316 99.0 49
Show 21148+3803 FYM 110 AJ 127 49.7 49
Show 21148+3803 FYM 110 AL 290 32.8 49
Show 21138+3800 KPP 786 20 6.8 50
Show 21144+3803 SEI1461 AB 136 10.7 51
Show 21144+3803 GUR 21 AC 183 23.9 51
Show 21167+3803 DAM1262 275 34.4 51
Show 21143+3627 SEI1459 187 14.7 51

 
 
WDS 21156+3715 : COMPONENTS
 
 
  A B
B pa=18.0°
sep=8.94"
 
C pa=23.5°
sep=54.84"
pa=24.6°
sep=45.95"
 
 
21156+3715 A
 
 
Coord arcsec 2000 211534.01+371508.5 Mag 7.75 Spectral class B4V (blue-white) PmRA 1.00
PmDE -4.0 SAO 71128 HIP 104952 Tycho2 2714-02251-1
HD 202569 BD BD+36 4492
Tycho2
Tycho2 2714-02251-1 Pflag RAmdeg 318.89169377 DEmdeg 37.25235807
PmRA 2.5 PmDE -1.3 E RAmdeg 4 E DEmdeg 4
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.41 EpDEm 1991.46
Num 12 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.8
Q pmDE 0.8 BTmag 7.638 E BTmag 0.014 VTmag 7.741
E VTmag 0.010 Prox 999 TYC T HIP 104952
CCDM RAdeg 318.89168667 DEdeg 37.25236111 EpRA 1990 1.68
EpDE 1990 1.66 E RAdeg 4.0 E DEdeg 4.0 Posflg
Corr 0.1
SAO
SAO 71128 DelFlag RA1950 PmRA1950 -0.0008
DE1950 PmDE1950 0.023 Vmag 7.8 SpType B8
Double code Source 5 CatNum 2094 DM BD+36 4492
DMcomp BDsup HD 202569 M HD 0
GC RA1950rad 5.55695636 DE1950rad 0.64653423 PmRA2000 -0.0006
PmDE2000 0.02
Hipparcos
Catalog H HIP 104952 Proxy RAhms 21 15 34.01
DEdms +37 15 08.5 Vmag 7.76 VarFlag R Vmag H
RAdeg 318.892 DEdeg 37.2524 AstroRef Plx -0.08
CCDM 21156+3715 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 202569 BD BD+36 4492
CD CP Dm number +36 4492 VIred -0.04
SpType B8 R SpType Coord arcsec 2000 211534.01+371508.5
Hipparcos 2
HIP 104952 Sn 5 So 0 Nc 1
RArad 5.5657099144 DErad 0.6501763522 Plx 0.05 PmRA 1.08
PmDE -2.32 E RArad 0.35 E DErad 0.39 E Plx 0.56
E pmRA 0.36 E pmDE 0.39 Hpmag 7.7249 E Hpmag 0.0011
SHp 0.012 VA 0 BV -0.102 E BV 0.008
VI -0.09
CCDM
Ccdm 21156+3715 RComp Comp A Note1
Note2 Discov num DRAs -1.99 DDEs 8.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp B8 PmNote *
PmRA 4 PmDE -2 Dm number +36 4492 Cat1 BD
Name2 +37 2094 Cat2 AGK2/3 HD 202569 M HD
ADS BDS A14796 M ADS BDS N IDS IDS 21116N3650A
HIC 104952
 
 
21156+3715 B
 
 
Coord arcsec 2000 211534.24+371517.0 Mag 12.9 Calc delta mag 5.15 Calc coord yes
CCDM
Ccdm 21156+3715 RComp Comp B Note1
Note2 Discov num HO 285 DRAs DDEs
R dRAs Year 1888 Theta 026 Rho 8.9
Obs 3 Vmag 12.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14796 M ADS BDS N IDS IDS 21116N3650B
HIC 104952
 
 
21156+3715 C
 
 
Coord arcsec 2000 211535.84+371558.8 Mag 12.44 PmRA 0.00 PmDE -4.0
Calc delta mag 4.69 Calc coord yes