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Current system
21453+2722
HO 606


Nearby doubles
16' : 21457+2708
BKO 633

16' : 21456+2709
MLB1050

21' : 21468+2718
HO 608

24' : 21435+2721
A 299AB

25' : 21435+2725
BKO 631

35' : 21439+2751
HO 166

38' : 21477+2740
CVR 922

49' : 21420+2741
RAO 465AB

53' : 21442+2631
BUP 230AB

56' : 21423+2800
GRV 494

57' : 21462+2817
MLB 540AB

59' : 21454+2819
J 3145

64' : 21444+2824
KPP3373

67' : 21491+2640
LDS4912

68' : 21480+2819
MLB 541

74' : 21399+2737
HDS3083

74' : 21472+2648
HJ 943

74' : 21503+2754
MLB 576

77' : 21396+2712
GRV 489

77' : 21505+2756
AZC 116

79' : 21474+2834
A 300AB

85' : 21441+2845
STF2822AB

86' : 21401+2632
BRT3367

90' : 21386+2720
KPP 497

94' : 21461+2855
BRT 58

95' : 21521+2748
HO 171



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21453+2722 HO 606

 
 
21h 45m 18.05s +27° 21' 41.0" P.A. 93.00 sep 18.4 mag 8.41,13.78 Sp G9III-IV
 
 
Coord 2000 21453+2722 Discov num HO  606 Comp Coord arcsec 2000 21 45 18.05 +27 21 41.0
Date first 1895 Date last 2015 Obs 11
Pa first 90 Pa last 92.8 P.A. Now (θ) 92.8°
Sep first 16.2 Sep last 18.364 Sep. Now (ρ) 18.364"
Mag pri 8.41 Mag sec 13.78 delta mag (ΔM) 5.37 Spectral class G9III-IV (yellow)
Pri motion ra +002 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus SAO 89962 Tycho2 2197-01271-1 Gaia DR2 1800877626847001600
HD 206990
 
 
WDS 21453+2722 HO 606 : 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)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21453+2722 HO 606 1924 4 94 17.0 8.41 12.70 G9III-IV D 214518.05+272141.0
21453+2722 HO 606 2008 5 93 18.3 8.41 12.70 G9III-IV D 214518.05+272141.0
21453+2722 HO 606 2014 7 93 18.5 8.41 13.78 G9III-IV 214518.05+272141.0
21453+2722 HO 606 2015 8 93 18.4 8.41 13.78 G9III-IV 214518.05+272141.0

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

 
 
WDS 21453+2722 HO 606 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21453+2722 HO 606 : MEASURES
 
 
No records found.

 
 
WDS 21453+2722 : VIRTUAL EYEPIECE
 
 

21453+2722 HO 606A mag 8.41 Sp G9III 21453+2722 HO 606B sep 16.3 P.A. 93.20 mag 13.78 Sp IV virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21453+2722 : ALADIN DSS IMAGE @ 21h 45m 18.05s +27° 21' 41.0"
 
 
 
 
WDS 21453+2722 HO 606 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21453+2722 HO 606 distance=1' 21457+2708 BKO 633 distance=16' 21456+2709 MLB1050 distance=16' 21435+2721 OSO 155DG distance=19' 21435+2721 A 299DE distance=19' 21435+2721 A 299DF distance=19' 21468+2718 HO 608 distance=21' 21435+2721 A 299AB distance=24' 21435+2721 A 299AD distance=24' 21435+2721 A 299BC distance=24' 21435+2725 BKO 631 distance=25' 21439+2751 HO 166 distance=35' 21477+2740 CVR 922 distance=38' 21420+2741 RAO 465Aa,Ab distance=49' 21420+2741 RAO 465AB distance=49' 21442+2631 BUP 230AB distance=53' 21442+2631 BUP 230AC distance=53' 21442+2631 BUP 230AD distance=53' 21442+2631 BKO 632AE distance=53' 21423+2800 GRV 494 distance=56' 21462+2817 MLB 540AB distance=57' 21462+2817 MLB 540AC distance=57' 21462+2817 ABH 152AD distance=57' 21462+2817 ABH 152AE distance=57' 21442+2631 BUP 230CD distance=58' 21454+2819 J 3145 distance=59' 21444+2824 KPP3373 distance=64' 21491+2640 LDS4912 distance=67' 21480+2819 MLB 541 distance=68' 21399+2737 HDS3083 distance=74' 21472+2648 HJ 943 distance=74' 21503+2754 MLB 576 distance=74' 21396+2712 GRV 489 distance=77' 21505+2756 AZC 116 distance=77' 21474+2834 A 300AB distance=79' 21474+2834 A 300AC distance=79' 21474+2834 A 300AD distance=79' 21441+2845 STF2822AB distance=85' 21441+2845 STF2822AC distance=85' 21441+2845 STF2822AD distance=85' 21441+2845 FYM 25AF distance=85' 21441+2845 FYM 25AG distance=85' 21441+2845 STF2822BD distance=85' 21401+2632 BRT3367 distance=86' 21441+2845 ES 521DE distance=87' 21441+2845 FYM 25DG distance=87' 21386+2720 KPP 497 distance=90' 21461+2855 BRT 58 distance=94' 21521+2748 HO 171 distance=95' 21474+2855 AG 420 distance=98' 21494+2600 UC 4574 distance=99' 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 21453+2722 HO 606 93 18.4 1
Show 21457+2708 BKO 633 18 7.4 16
Show 21456+2709 MLB1050 67 6.9 16
Show 21435+2721 OSO 155 DG 304 6.1 19
Show 21435+2721 A 299 DE 95 999.9 19
Show 21435+2721 A 299 DF 26 145.8 19
Show 21468+2718 HO 608 130 0.6 21
Show 21435+2721 A 299 AB 67 1.1 24
Show 21435+2721 A 299 AD 64 374.5 24
Show 21435+2721 A 299 BC 325 0.1 24
Show 21435+2725 BKO 631 26 5.9 25
Show 21439+2751 HO 166 233 0.2 35
Show 21477+2740 CVR 922 225 9.9 38
Show 21420+2741 RAO 465 Aa,Ab 128 0.3 49
Show 21420+2741 RAO 465 AB 303 2.6 49
Show 21442+2631 BUP 230 AB 291 45.7 53
Show 21442+2631 BUP 230 AC 260 571.7 53
Show 21442+2631 BUP 230 AD 289 439.6 53
Show 21442+2631 BKO 632 AE 115 16.8 53
Show 21423+2800 GRV 494 323 62.9 56
Show 21462+2817 MLB 540 AB 256 4.1 57
Show 21462+2817 MLB 540 AC 322 8.7 57
Show 21462+2817 ABH 152 AD 68 41.8 57
Show 21462+2817 ABH 152 AE 96 80.1 57
Show 21442+2631 BUP 230 CD 32 277.1 58
Show 21454+2819 J 3145 112 5.4 59
Show 21444+2824 KPP3373 242 2.1 64
Show 21491+2640 LDS4912 134 16.5 67
Show 21480+2819 MLB 541 340 9.9 68
Show 21399+2737 HDS3083 337 0.2 74
Show 21472+2648 HJ 943 146 5.7 74
Show 21503+2754 MLB 576 267 13.1 74
Show 21396+2712 GRV 489 229 51.9 77
Show 21505+2756 AZC 116 353 20.9 77
Show 21474+2834 A 300 AB 252 2.3 79
Show 21474+2834 A 300 AC 29 7.5 79
Show 21474+2834 A 300 AD 170 8.4 79
Show 21441+2845 STF2822 AB 325 1.6 85
Show 21441+2845 STF2822 AC 292 76.6 85
Show 21441+2845 STF2822 AD 43 197.0 85
Show 21441+2845 FYM 25 AF 72 111.5 85
Show 21441+2845 FYM 25 AG 73 168.1 85
Show 21441+2845 STF2822 BD 45 196.7 85
Show 21401+2632 BRT3367 310 4.5 86
Show 21441+2845 ES 521 DE 286 17.5 87
Show 21441+2845 FYM 25 DG 164 89.6 87
Show 21386+2720 KPP 497 205 4.6 90
Show 21461+2855 BRT 58 165 4.4 94
Show 21521+2748 HO 171 342 0.8 95
Show 21474+2855 AG 420 145 7.5 98
Show 21494+2600 UC 4574 27 47.5 99

 
 
WDS 21453+2722 : COMPONENTS
 
 
  A
B pa=93.2°
sep=16.31"
 
 
21453+2722 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 214518.05+272141.0 Mag 8.41 Spectral class G9III (yellow)
PmRA 2.00 PmDE -3.0 SAO 89962 Tycho2 2197-01271-1
HD 206990 DM BD+26 4256
Tycho2
Tycho2 2197-01271-1 Pflag RAmdeg 326.32524059 DEmdeg 27.36139959
PmRA 0.9 PmDE -2.9 E RAmdeg 8 E DEmdeg 9
E pmRA 1.3 E pmDE 1.2 EpRAm 1990.84 EpDEm 1990.56
Num 9 Q RAmdeg 0.8 Q DEmdeg 1.1 Q pmRA 0.8
Q pmDE 1.2 BTmag 9.675 E BTmag 0.025 VTmag 8.409
E VTmag 0.014 Prox 815 TYC T HIP
CCDM RAdeg 326.32523778 DEdeg 27.36140611 EpRA 1990 1.64
EpDE 1990 1.70 E RAdeg 8.3 E DEdeg 9.0 Posflg
Corr -0.1
SAO
SAO 89962 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 -0.011 Vmag 8.3 SpType K0
Double code Source 34 CatNum 12857 DM BD+26 4256
DMcomp BDsup HD 206990 M HD 0
GC RA1950rad 5.68566283 DE1950rad 0.47351563 PmRA2000 0.001
PmDE2000 -0.016
CCDM
Ccdm 21453+2722 RComp Comp A Note1
Note2 Discov num DRAs 0.09 DDEs -19.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.4 Sp K0 PmNote *
PmRA 15 PmDE 6 Dm number +26 4256 Cat1 BD
Name2 +27 2504 Cat2 AGK2/3 HD 206990 M HD
ADS BDS A15290 M ADS BDS N IDS IDS 21408N2654A
HIC
 
 
21453+2722 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214519.27+272140.1 Mag 13.78 Spectral class IV
Calc delta mag 5.37 Calc coord yes
CCDM
Ccdm 21453+2722 RComp Comp B Note1
Note2 Discov num HO 606 DRAs DDEs
R dRAs Year 1895 Theta 093 Rho 16.9
Obs 4 Vmag 12.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15290 M ADS BDS N IDS IDS 21408N2654B
HIC