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Current system
21118+2943
HAU 27
HD 201912


Nearby doubles
14' : 21129+2944
MLB 667

21' : 21109+2925
BAG 29

35' : 21129+3014
BUP 227AB

41' : 21091+2922
COU1332

47' : 21088+2916
MLB 487

48' : 21098+2915
DU 3

49' : 21103+3027
TDT2801

50' : 21101+3027
KPP4225

50' : 21150+2917
GRV 438

51' : 21115+3033
ALD 5

51' : 21086+3012
STF2762AB

51' : 21144+2905
STF2779AB

52' : 21156+2957
TDT2864

53' : 21078+2945
MLB 715AB

54' : 21092+3023
CBL 90

55' : 21083+2913
COU1331

56' : 21117+3038
J 1235

57' : 21161+2951
LDS1053AB

58' : 21162+2948
TDT2872

58' : 21162+2928
J 1784

60' : 21075+2924
TDT2769

61' : 21077+3009
KPP1031

62' : 21094+2850
DOB9002

65' : 21070+3001
J 1319

65' : 21167+2955
TDT2878

66' : 21167+3001
MLB1091



Selections
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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21118+2943 HAU 27 (HD 201912)

 
 
21h 11m 48.53s +29° 42' 42.1" P.A. 297.00 sep 50.0 mag 6.81,10.12 Sp B5III dist. 277.01 pc (903.61 l.y.)
 
 
Coord 2000 21118+2943 Discov num HAU  27 Comp Coord arcsec 2000 21 11 48.53 +29 42 42.1
Date first 1894 Date last 2015 Obs 11
Pa first 298 Pa last 297.2 P.A. Now (θ) 297.2°
Sep first 49.1 Sep last 50.025 Sep. Now (ρ) 50.025"
Mag pri 6.81 Mag sec 10.12 delta mag (ΔM) 3.31 Spectral class B5III (blue-white)
Pri motion ra -001 Sec motion ra -004
Pri motion dec -011 Sec motion dec -006
Notes
rPM=0.528
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201912 Constellation Cygnus SAO 89520 HIP 104643
Tycho2 2185-01987-1 Gaia DR2 1851523709407187328 HD 201912 GC 29633
BD BD+29 4342 Distance 277.01 Distance ly 903.61
 
 
WDS 21118+2943 HAU 27 (HD 201912) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Hau1964 Pa - Haupt, H. 1964MiWie..12....2H
Hau1964 Mitt. Sternw. Wien 12, #2, 1964
Hau1965 Pa - Haupt, H. 1965MiWie..12...16H
Hau1965 Mitt. Sternw. Wien 12, #16, 1965
Hau1966 Pa - Haupt, H. .
Hau1966 Sitzungsb. Aust. Acad. Sci. #175, 293, 1966
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21118+2943 HAU 27 2003 8 297 49.2 6.81 10.12 B5III D 211148.53+294242.1
21118+2943 HAU 27 2010 10 297 50.0 6.81 10.12 B5III 211148.53+294242.1
21118+2943 HAU 27 2015 11 297 50.0 6.81 10.12 B5III 211148.53+294242.1

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

 
 
WDS 21118+2943 HAU 27 (HD 201912) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21118+2943 HAU 27 (HD 201912) : MEASURES
 
 
No records found.

 
 
WDS 21118+2943 (HD 201912) : VIRTUAL EYEPIECE
 
 

21118+2943 HAU 27A mag 6.81 Sp B5III 21118+2943 HAU 27B sep 44.9 P.A. 300.60 mag 10.12 virtual eyepiece
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Radius:
Components only
 
 
WDS 21118+2943 (HD 201912) : ALADIN DSS IMAGE @ 21h 11m 48.53s +29° 42' 42.1"
 
 
 
 
WDS 21118+2943 HAU 27 (HD 201912) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21118+2943 HAU 27 distance=0' 21129+2944 MLB 667 distance=14' 21109+2925 BAG 29 distance=21' 21129+3014 BAS 7Aa,Ab distance=35' 21129+3014 BUP 227AB distance=35' 21129+3014 BUP 227AC distance=35' 21129+3014 BUP 227AD distance=35' 21129+3014 FYM 141AE distance=35' 21129+3014 FYM 141AF distance=35' 21129+3014 FYM 141AG distance=35' 21091+2922 COU1332 distance=41' 21088+2916 MLB 487 distance=47' 21098+2915 DU 3 distance=48' 21103+3027 TDT2801 distance=49' 21101+3027 KPP4225 distance=50' 21150+2917 GRV 438 distance=50' 21115+3033 ALD 5 distance=51' 21086+3012 STF2762AB distance=51' 21086+3012 STF2762AC distance=51' 21086+3012 STF2762AD distance=51' 21144+2905 STF2779AB distance=51' 21144+2905 STF2779AC distance=51' 21156+2957 TDT2864 distance=52' 21078+2945 MLB 715AB distance=53' 21078+2945 MLB 715AC distance=53' 21092+3023 CBL 90 distance=54' 21083+2913 COU1331 distance=55' 21117+3038 J 1235 distance=56' 21161+2951 BWL 56BF distance=57' 21161+2951 LDS1053AB distance=57' 21161+2951 BWL 56Aa,Ab distance=57' 21161+2951 BWL 56AC distance=57' 21161+2951 BWL 56AD distance=57' 21161+2951 BWL 56AE distance=57' 21162+2948 TDT2872 distance=58' 21162+2928 J 1784 distance=58' 21075+2924 TDT2769 distance=60' 21077+3009 KPP1031 distance=61' 21094+2850 DOB9002 distance=62' 21070+3001 J 1319 distance=65' 21167+2955 TDT2878 distance=65' 21167+3001 MLB1091 distance=66' 21077+3022 UC 256 distance=67' 21149+3037 BRT 287 distance=68' 21169+3001 MLB 538AB distance=69' 21169+3001 DAM 227AC distance=69' 21166+3018 J 3131BC distance=70' 21166+3018 J 3131AB distance=70' 21159+2858 HDS3025 distance=71' 21065+2933 AG 413 distance=71' 21153+2848 MLB 488 distance=73' 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 21118+2943 HAU 27 297 50.0
Show 21129+2944 MLB 667 30 2.4 14
Show 21109+2925 BAG 29 174 0.2 21
Show 21129+3014 BAS 7 Aa,Ab 246 0.0 35
Show 21129+3014 BUP 227 AB 205 65.2 35
Show 21129+3014 BUP 227 AC 300 91.5 35
Show 21129+3014 BUP 227 AD 63 105.3 35
Show 21129+3014 FYM 141 AE 76 42.8 35
Show 21129+3014 FYM 141 AF 267 63.6 35
Show 21129+3014 FYM 141 AG 97 70.7 35
Show 21091+2922 COU1332 20 0.2 41
Show 21088+2916 MLB 487 142 4.3 47
Show 21098+2915 DU 3 15 6.1 48
Show 21103+3027 TDT2801 237 0.9 49
Show 21101+3027 KPP4225 236 2.2 50
Show 21150+2917 GRV 438 8 15.2 50
Show 21115+3033 ALD 5 153 3.7 51
Show 21086+3012 STF2762 AB 303 3.3 51
Show 21086+3012 STF2762 AC 229 59.3 51
Show 21086+3012 STF2762 AD 66 73.1 51
Show 21144+2905 STF2779 AB 164 15.1 51
Show 21144+2905 STF2779 AC 71 67.7 51
Show 21156+2957 TDT2864 100 0.9 52
Show 21078+2945 MLB 715 AB 40 5.5 53
Show 21078+2945 MLB 715 AC 336 25.3 53
Show 21092+3023 CBL 90 113 54.5 54
Show 21083+2913 COU1331 37 0.3 55
Show 21117+3038 J 1235 184 2.8 56
Show 21161+2951 BWL 56 BF 233 3.5 57
Show 21161+2951 LDS1053 AB 259 26.0 57
Show 21161+2951 BWL 56 Aa,Ab 163 0.1 57
Show 21161+2951 BWL 56 AC 77 3.4 57
Show 21161+2951 BWL 56 AD 200 2.6 57
Show 21161+2951 BWL 56 AE 226 4.4 57
Show 21162+2948 TDT2872 163 0.7 58
Show 21162+2928 J 1784 338 5.0 58
Show 21075+2924 TDT2769 157 1.1 60
Show 21077+3009 KPP1031 334 8.3 61
Show 21094+2850 DOB9002 104 18.6 62
Show 21070+3001 J 1319 206 1.7 65
Show 21167+2955 TDT2878 10 0.6 65
Show 21167+3001 MLB1091 170 10.4 66
Show 21077+3022 UC 256 67 48.1 67
Show 21149+3037 BRT 287 197 6.2 68
Show 21169+3001 MLB 538 AB 310 3.2 69
Show 21169+3001 DAM 227 AC 26 8.2 69
Show 21166+3018 J 3131 BC 229 5.5 70
Show 21166+3018 J 3131 AB 253 24.6 70
Show 21159+2858 HDS3025 46 0.2 71
Show 21065+2933 AG 413 107 2.7 71
Show 21153+2848 MLB 488 306 11.4 73

 
 
WDS 21118+2943 : COMPONENTS
 
 
  A
B pa=300.6°
sep=44.90"
 
 
21118+2943 A
 
 
Componente originario normalizzato AB Name HD 201912 Coord arcsec 2000 211148.53+294242.1 Mag 6.81
Spectral class B5III (blue-white) PmRA -1.00 PmDE -11.0 SAO 89520
HIP 104643 Tycho2 2185-01987-1 HD 201912 GC 29633
BD BD+29 4342
Tycho2
Tycho2 2185-01987-1 Pflag RAmdeg 317.95221869 DEmdeg 29.71168105
PmRA 0.1 PmDE -12.6 E RAmdeg 4 E DEmdeg 4
E pmRA 1.3 E pmDE 1.2 EpRAm 1991.40 EpDEm 1991.14
Num 13 Q RAmdeg 0.5 Q DEmdeg 0.5 Q pmRA 0.4
Q pmDE 0.5 BTmag 6.651 E BTmag 0.014 VTmag 6.811
E VTmag 0.010 Prox 499 TYC T HIP 104643
CCDM RAdeg 317.95221833 DEdeg 29.71171111 EpRA 1990 1.60
EpDE 1990 1.36 E RAdeg 3.5 E DEdeg 3.7 Posflg
Corr 0.2
SAO
SAO 89520 DelFlag RA1950 PmRA1950 -0.0006
DE1950 PmDE1950 0.011 Vmag 6.8 SpType B5
Double code Source 70 CatNum 29633 DM BD+29 4342
DMcomp BDsup HD 201912 M HD 0
GC 29633 RA1950rad 5.53998765 DE1950rad 0.51498044 PmRA2000 -0.0005
PmDE2000 0.007
Hipparcos
Catalog H HIP 104643 Proxy RAhms 21 11 48.53
DEdms +29 42 42.2 Vmag 6.85 VarFlag 1 R Vmag H
RAdeg 317.952 DEdeg 29.7117 AstroRef Plx 2.43
CCDM 21118+2943 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 201912 BD BD+29 4342
CD CP Dm number +29 4342 VIred -0.16
SpType B5 R SpType Coord arcsec 2000 211148.53+294242.2
Hipparcos 2
HIP 104643 Sn 5 So 0 Nc 1
RArad 5.5493131196 DErad 0.5185672074 Plx 3.61 PmRA -1.44
PmDE -11.04 E RArad 0.32 E DErad 0.28 E Plx 0.46
E pmRA 0.37 E pmDE 0.31 Hpmag 6.8013 E Hpmag 0.0016
SHp 0.013 VA 1 BV -0.143 E BV 0.005
VI -0.14
CCDM
Ccdm 21118+2943 RComp Comp A Note1
Note2 Discov num DRAs 0.52 DDEs -18.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag Sp B5 PmNote *
PmRA -1 PmDE -14 Dm number +29 4342 Cat1 BD
Name2 +29 2511 Cat2 AGK2/3 HD 201912 M HD
ADS BDS M ADS BDS N IDS IDS 21075N2918A
HIC 104643
 
 
21118+2943 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211145.56+294305.0 Mag 10.12 PmRA -4.00
PmDE -6.0 Calc delta mag 3.31 Calc coord yes
CCDM
Ccdm 21118+2943 RComp Comp B Note1
Note2 Discov num HAU DRAs DDEs
R dRAs Year 1961 Theta 298 Rho 49.7
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21075N2918B
HIC