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Doubles in session


Current system
21230+2858
STF 2792 AB


Nearby doubles
5' : 21231+2902
RAO 454

14' : 21223+2906
COU 532

32' : 21224+2927
COU1041

43' : 21253+2928
COU 940

45' : 21226+2814
J 2342

53' : 21259+2935
TDT2959

56' : 21197+2823
LDS4879

59' : 21273+2917
TDT2976

61' : 21263+2814
CVR 902

64' : 21243+2756
GRV 462

64' : 21201+2809
J 196

67' : 21214+2755
HJ 1636

70' : 21256+2957
J 3139

74' : 21181+2825
HJ 1632

74' : 21176+2841
MLB 489AB

74' : 21176+2915
COU 835AB

75' : 21235+3012
UC 260AB

77' : 21266+2757
TDT2968

81' : 21245+3015
A 1219AB

82' : 21206+2743
A 295

82' : 21198+2748
LSC 96

83' : 21177+2815
TDT2889

86' : 21228+3026
RAO 453

91' : 21162+2858
TDT2873

92' : 21230+2726
COU 533

92' : 21167+2819
MLB 574



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Binary Systems
Triple Systems
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21230+2858 STF 2792 AB

 
 
21h 23m 05.00s +28° 57' 18.3" P.A. 331.00 sep 7.4 mag 9.19,10.63 Sp A7 dist. 246.91 pc (805.42 l.y.)
 
 
Coord 2000 21230+2858 Discov num STF2792 Comp AB Coord arcsec 2000 21 23 05.00 +28 57 18.3
Date first 1828 Date last 2018 Obs 26
Pa first 332 Pa last 330.5 P.A. Now (θ) 330.5°
Sep first 6.0 Sep last 7.412 Sep. Now (ρ) 7.412"
Mag pri 9.19 Mag sec 10.63 delta mag (ΔM) 1.44 Spectral class A7 (white)
Pri motion ra +003 Sec motion ra +005
Pri motion dec -003 Sec motion dec -006
Notes
rPM=0.462
Nature of this double is uncertain.
 
 
21230+2858 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 89664 21 23 05 +28 57 18 STF 2792 AB 2018 26 331 7.4 9.19 10.63 1.44 <===
Show 89664 21 23 05 +28 57 18 STF 2792 AC 2015 8 161 22.8 9.17 12.90 3.73
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 89664 HIP 105579 Tycho2 2199-01236-1
Gaia DR2 1848600692101182080 GC 29943 BD BD+28 4072 Distance 246.91
Distance ly 805.42
 
 
WDS 21230+2858 STF 2792 AB : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
STF (F. Struve DD - Appendix list #1)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
21230+2858 STF2792 AB 1997 17 330 7.2 9.19 10.63 A7 +28 4072 D 212305.00+285718.3
21230+2858 STF2792 AB 2010 19 330 7.3 9.19 10.63 A7 +28 4072 D 212305.00+285718.3
21230+2858 STF2792 AB 2016 22 331 7.2 9.19 10.63 A7 +28 4072 212305.00+285718.3
21230+2858 STF2792 AB 2018 26 331 7.4 9.19 10.63 A7 +28 4072 212305.00+285718.3

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

 
 
WDS 21230+2858 STF 2792 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21230+2858 STF 2792 AB : MEASURES
 
 
No records found.

 
 
WDS 21230+2858 : VIRTUAL EYEPIECE
 
 

21230+2858 STF2792A mag 9.19 Sp A7 21230+2858 STF2792B sep 7.4 P.A. 330.50 mag 10.63 21230+2858 STF2792C sep 22.8 P.A. 160.50 mag 12.9 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 21230+2858 : ALADIN DSS IMAGE @ 21h 23m 05.00s +28° 57' 18.3"
 
 
 
 
WDS 21230+2858 STF 2792 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21230+2858 STF2792AB distance=0' 21231+2902 RAO 454 distance=5' 21223+2906 COU 532 distance=14' 21224+2927 COU1041 distance=32' 21253+2928 COU 940 distance=43' 21226+2814 J 2342 distance=45' 21259+2935 TDT2959 distance=53' 21197+2823 LDS4879 distance=56' 21273+2917 TDT2976 distance=59' 21263+2814 CVR 902 distance=61' 21243+2756 GRV 462 distance=64' 21201+2809 J 196 distance=64' 21214+2755 HJ 1636 distance=67' 21256+2957 J 3139 distance=70' 21181+2825 HJ 1632 distance=74' 21176+2841 MLB 489AB distance=74' 21176+2841 MLB 489AC distance=74' 21176+2915 COU 835AB distance=74' 21176+2915 COU 835AC distance=74' 21235+3012 UC 260AB distance=75' 21266+2757 TDT2968 distance=77' 21245+3015 A 1219AB distance=81' 21206+2743 A 295 distance=82' 21198+2748 LSC 96 distance=82' 21177+2815 TDT2889 distance=83' 21228+3026 RAO 453 distance=86' 21162+2858 TDT2873 distance=91' 21230+2726 COU 533 distance=92' 21167+2819 MLB 574 distance=92' 21220+2727 OSO 145 distance=92' 21230+2725 HEI 188 distance=94' 21159+2858 HDS3025 distance=95' 21162+2928 J 1784 distance=97' 21198+2730 UC 258 distance=98' 21289+3002 MLB 668 distance=101' 21153+2848 MLB 488 distance=101' 21277+2737 LSC 130 distance=101' 21167+2955 TDT2878 distance=102' 21209+2720 COU 729 distance=102' 21162+2948 TDT2872 distance=104' 21169+3001 MLB 538AB distance=104' 21169+3001 DAM 227AC distance=104' 21301+2946 GRV 471 distance=105' 21167+3001 MLB1091 distance=106' 21161+2951 LDS1053AB distance=107' 21161+2951 BWL 56Aa,Ab distance=107' 21161+2951 BWL 56AC distance=107' 21161+2951 BWL 56AD distance=107' 21161+2951 BWL 56AE distance=107' 21161+2951 BWL 56BF distance=107' 21150+2917 GRV 438 distance=107' 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 21230+2858 STF2792 AB 331 7.4 0
Show 21230+2858 STF2792 AC 161 22.8 0
Show 21231+2902 RAO 454 9 0.4 5
Show 21223+2906 COU 532 45 0.4 14
Show 21224+2927 COU1041 90 1.3 32
Show 21253+2928 COU 940 263 0.3 43
Show 21226+2814 J 2342 214 6.1 45
Show 21259+2935 TDT2959 99 0.5 53
Show 21197+2823 LDS4879 88 258.8 56
Show 21273+2917 TDT2976 275 0.6 59
Show 21263+2814 CVR 902 340 16.2 61
Show 21243+2756 GRV 462 65 31.1 64
Show 21201+2809 J 196 257 3.8 64
Show 21214+2755 HJ 1636 185 7.4 67
Show 21256+2957 J 3139 331 6.7 70
Show 21181+2825 HJ 1632 44 8.2 74
Show 21176+2841 MLB 489 AB 205 5.0 74
Show 21176+2841 MLB 489 AC 284 11.0 74
Show 21176+2915 COU 835 AB 238 0.4 74
Show 21176+2915 COU 835 AC 247 12.3 74
Show 21235+3012 UC 260 AB 243 33.4 75
Show 21266+2757 TDT2968 10 0.6 77
Show 21245+3015 A 1219 AB 312 1.5 81
Show 21206+2743 A 295 253 0.3 82
Show 21198+2748 LSC 96 299 0.5 82
Show 21177+2815 TDT2889 19 0.5 83
Show 21228+3026 RAO 453 291 0.3 86
Show 21162+2858 TDT2873 277 0.8 91
Show 21230+2726 COU 533 290 0.7 92
Show 21167+2819 MLB 574 334 7.7 92
Show 21220+2727 OSO 145 332 9.8 92
Show 21230+2725 HEI 188 310 1.2 94
Show 21159+2858 HDS3025 46 0.2 95
Show 21162+2928 J 1784 338 5.0 97
Show 21198+2730 UC 258 331 13.9 98
Show 21289+3002 MLB 668 240 4.8 101
Show 21153+2848 MLB 488 306 11.4 101
Show 21277+2737 LSC 130 83 0.4 101
Show 21167+2955 TDT2878 10 0.6 102
Show 21209+2720 COU 729 318 0.2 102
Show 21162+2948 TDT2872 163 0.7 104
Show 21169+3001 MLB 538 AB 310 3.2 104
Show 21169+3001 DAM 227 AC 26 8.2 104
Show 21301+2946 GRV 471 306 21.0 105
Show 21167+3001 MLB1091 170 10.4 106
Show 21161+2951 LDS1053 AB 259 26.0 107
Show 21161+2951 BWL 56 Aa,Ab 163 0.1 107
Show 21161+2951 BWL 56 AC 77 3.4 107
Show 21161+2951 BWL 56 AD 200 2.6 107
Show 21161+2951 BWL 56 AE 226 4.4 107
Show 21161+2951 BWL 56 BF 233 3.5 107

 
 
WDS 21230+2858 : COMPONENTS
 
 
  A B
B pa=330.5°
sep=7.41"
 
C pa=160.5°
sep=22.81"
pa=158.1°
sep=30.14"
 
 
21230+2858 A
 
 
Coord arcsec 2000 212305.00+285718.3 Mag 9.19 Spectral class A7 (white) PmRA 3.00
PmDE -3.0 SAO 89664 HIP 105579 Tycho2 2199-01236-1
GC 29943 BD BD+28 4072
Tycho2
Tycho2 2199-01236-1 Pflag RAmdeg 320.77084624 DEmdeg 28.95508781
PmRA 2.8 PmDE -3.3 E RAmdeg 10 E DEmdeg 11
E pmRA 2.1 E pmDE 1.9 EpRAm 1991.44 EpDEm 1991.35
Num 4 Q RAmdeg 0.2 Q DEmdeg 1.5 Q pmRA 0.1
Q pmDE 1.5 BTmag 9.637 E BTmag 0.022 VTmag 9.194
E VTmag 0.017 Prox 72 TYC T HIP 105579
CCDM A RAdeg 320.77083917 DEdeg 28.95509556 EpRA 1990 1.69
EpDE 1990 1.72 E RAdeg 9.9 E DEdeg 10.9 Posflg
Corr 0.0
SAO
SAO 89664 DelFlag RA1950 PmRA1950 0.0008
DE1950 PmDE1950 0.001 Vmag 9 SpType A7
Double code Source 70 CatNum 29943 DM BD+28 4072
DMcomp BDsup HD M HD
GC 29943 RA1950rad 5.58902624 DE1950rad 0.50161393 PmRA2000 0.0009
PmDE2000 -0.003
Hipparcos
Catalog H HIP 105579 Proxy H RAhms 21 23 05.00
DEdms +28 57 18.3 Vmag 8.94 VarFlag R Vmag H
RAdeg 320.771 DEdeg 28.9551 AstroRef A Plx 4.35
CCDM 6.26 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 330 Rho 7.212 HD BD BD+28 4072
CD CP Dm number +28 4072 VIred 0.49
SpType A7... R SpType Coord arcsec 2000 212305.00+285718.3
Hipparcos 2
HIP 105579 Sn 15 So 3 Nc 2
RArad 5.5985072927 DErad 0.5053617584 Plx 4.05 PmRA 4.99
PmDE -4.57 E RArad 1.11 E DErad 1 E Plx 1.65
E pmRA 1.27 E pmDE 1.39 Hpmag E Hpmag 0.003
SHp 0.026 VA 0 BV 0.399 E BV 0.027
VI 0.46
 
 
21230+2858 B
 
 
Coord arcsec 2000 212304.72+285724.8 Mag 10.63 PmRA 5.00 PmDE -6.0
Delta magnitude 1.44 Coordinate calculated yes
 
 
21230+2858 C
 
 
Coord arcsec 2000 212305.58+285656.8 Mag 12.9 PmRA 23.00 PmDE -6.0
Delta magnitude 3.71 Coordinate calculated yes