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Current system
21577+2015
STF 2849


Nearby doubles
26' : 21569+2037
LDS1484

33' : 21592+1950
GWP3112

33' : 21576+2047
L 37

35' : 21592+2042
UC 4621

37' : 21560+1948
ALL 4

39' : 21565+1940
HU 382

45' : 21597+2049
GRV 526

62' : 21550+1926
TDT3238

73' : 21549+1914
AMS 2

76' : 21551+1908
J 2

78' : 21595+2128
LDS1485

79' : 22027+1939
TDS1153

85' : 22019+1913
GRV 536

87' : 22016+1909
GRV 534

87' : 22037+2033
NSN 750

91' : 21516+1950
HJ 947AB

92' : 22026+2116
SLW1258

93' : 21513+2036
SKF2181

94' : 21550+1849
UC 4596

94' : 22044+2023
LDS1487

96' : 21598+1843
UC 4623

98' : 21553+1842
HO 173

103' : 21517+1918
STF2834AB

105' : 21505+1953
LDS4916

107' : 21514+1916
WSI 24

110' : 22051+1950
GRV 540



Selections
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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.

21577+2015 STF 2849

 
 
21h 57m 43.20s +20° 14' 29.9" P.A. 243.00 sep 1.7 mag 8.69,10.37 Sp G5 dist. 123 pc (401.23 l.y.)
 
 
Coord 2000 21577+2015 Discov num STF2849 Comp Coord arcsec 2000 21 57 43.20 +20 14 29.9
Date first 1830 Date last 2016 Obs 43
Pa first 272 Pa last 243 P.A. Now (θ) 243°
Sep first 1.1 Sep last 1.658 Sep. Now (ρ) 1.658"
Mag pri 8.69 Mag sec 10.37 delta mag (ΔM) 1.68 Spectral class G5 (yellow)
Pri motion ra +050 Sec motion ra +050
Pri motion dec -003 Sec motion dec -003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus HIP 108409 Tycho2 1687-01710-1 Gaia DR2 1780674371273295360
BD BD+19 4834 Distance 123 Distance ly 401.23
 
 
WDS 21577+2015 STF 2849 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21577+2015 STF2849 2001 40 245 1.7 8.69 10.37 G5 D 215743.20+201429.9
21577+2015 STF2849 2010 41 244 1.6 8.69 10.37 G5 D 215743.20+201429.9
21577+2015 STF2849 2016 42 243 1.7 8.69 10.37 G5 215743.20+201429.9

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

 
 
WDS 21577+2015 STF 2849 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21577+2015 STF 2849 : MEASURES
 
 
No records found.

 
 
WDS 21577+2015 : VIRTUAL EYEPIECE
 
 

21577+2015 STF2849A mag 8.69 Sp G5 21577+2015 STF2849B sep 1.6 P.A. 241.50 mag 10.37 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21577+2015 : ALADIN DSS IMAGE @ 21h 57m 43.20s +20° 14' 29.9"
 
 
 
 
WDS 21577+2015 STF 2849 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21577+2015 STF2849 distance=0' 21569+2037 LDS1484 distance=26' 21592+1950 GWP3112 distance=33' 21576+2047 L 37 distance=33' 21592+2042 UC 4621 distance=35' 21560+1948 ALL 4 distance=37' 21565+1940 HU 382 distance=39' 21597+2049 GRV 526 distance=45' 21543+1943 STF2841A,BC distance=58' 21543+1943 COU 432BC distance=58' 21550+1926 TDT3238 distance=62' 21549+1914 AMS 2 distance=73' 21551+1908 J 2 distance=76' 21595+2128 LDS1485 distance=78' 22027+1939 TDS1153 distance=79' 22019+1913 GRV 536 distance=85' 22016+1909 GRV 534 distance=87' 22037+2033 NSN 750 distance=87' 21516+1950 HJ 947BC distance=90' 21516+1950 HJ 947AB distance=91' 21516+1950 HJ 947AC distance=91' 22026+2116 SLW1258 distance=92' 21513+2036 SKF2181 distance=93' 21550+1849 UC 4596 distance=94' 22044+2023 LDS1487 distance=94' 21598+1843 UC 4623 distance=96' 21553+1842 HO 173 distance=98' 21517+1918 STF2834AB distance=103' 21517+1918 BU 1506AC distance=103' 21517+1918 BU 1506BC distance=103' 21505+1953 LDS4916 distance=105' 21514+1916 WSI 24 distance=107' 22051+1950 GRV 540 distance=110' 21497+2039 TDT3182 distance=116' 21517+2134 BRT2501 distance=117' 22060+2036 STF2859 distance=119' 22061+2034 BRT2840 distance=120' 22060+2048 STF2861 distance=122' 21579+2224 GRV 524 distance=130' 21537+2212 J 2361 distance=130' 21579+1759 GWP3109 distance=136' 22027+2215 BRT2502 distance=140' 21580+2235 UC 4614 distance=141' 21541+1803 SKF2182 distance=141' 21481+2100 HU 378 distance=143' 22049+2158 GAU 18 distance=145' 21557+1752 BPM2413 distance=146' 21596+2239 LDS4933 distance=147' 22053+2156 HJ 3089AB distance=147' 22052+2158 HJ 3088 distance=147' 21500+2157 TDT3184 distance=149' 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 21577+2015 STF2849 243 1.7
Show 21569+2037 LDS1484 218 9.1 26
Show 21592+1950 GWP3112 169 82.8 33
Show 21576+2047 L 37 90 2.9 33
Show 21592+2042 UC 4621 321 13.8 35
Show 21560+1948 ALL 4 208 19.2 37
Show 21565+1940 HU 382 221 0.3 39
Show 21597+2049 GRV 526 81 45.6 45
Show 21543+1943 STF2841 A,BC 110 22.4 58
Show 21543+1943 COU 432 BC 299 0.1 58
Show 21550+1926 TDT3238 230 0.6 62
Show 21549+1914 AMS 2 199 7.0 73
Show 21551+1908 J 2 35 3.5 76
Show 21595+2128 LDS1485 269 74.9 78
Show 22027+1939 TDS1153 38 0.9 79
Show 22019+1913 GRV 536 38 67.7 85
Show 22016+1909 GRV 534 263 31.5 87
Show 22037+2033 NSN 750 183 1.3 87
Show 21516+1950 HJ 947 BC 297 41.1 90
Show 21516+1950 HJ 947 AB 98 18.9 91
Show 21516+1950 HJ 947 AC 310 24.3 91
Show 22026+2116 SLW1258 105 120.1 92
Show 21513+2036 SKF2181 353 18.9 93
Show 21550+1849 UC 4596 308 17.3 94
Show 22044+2023 LDS1487 69 19.4 94
Show 21598+1843 UC 4623 183 42.9 96
Show 21553+1842 HO 173 73 0.9 98
Show 21517+1918 STF2834 AB 298 4.3 103
Show 21517+1918 BU 1506 AC 116 29.7 103
Show 21517+1918 BU 1506 BC 118 29.9 103
Show 21505+1953 LDS4916 298 198.7 105
Show 21514+1916 WSI 24 24 14.2 107
Show 22051+1950 GRV 540 317 79.3 110
Show 21497+2039 TDT3182 210 1.9 116
Show 21517+2134 BRT2501 324 5.2 117
Show 22060+2036 STF2859 344 3.8 119
Show 22061+2034 BRT2840 314 2.3 120
Show 22060+2048 STF2861 220 7.1 122
Show 21579+2224 GRV 524 59 47.9 130
Show 21537+2212 J 2361 114 7.5 130
Show 21579+1759 GWP3109 338 7.2 136
Show 22027+2215 BRT2502 232 17.0 140
Show 21580+2235 UC 4614 229 12.4 141
Show 21541+1803 SKF2182 326 74.9 141
Show 21481+2100 HU 378 298 0.2 143
Show 22049+2158 GAU 18 132 53.3 145
Show 21557+1752 BPM2413 343 97.0 146
Show 21596+2239 LDS4933 321 151.1 147
Show 22053+2156 HJ 3089 AB 111 21.9 147
Show 22052+2158 HJ 3088 194 23.2 147
Show 21500+2157 TDT3184 171 2.6 149

 
 
WDS 21577+2015 : COMPONENTS
 
 
  A
B pa=241.5°
sep=1.58"
 
 
21577+2015 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 215743.20+201429.9 Mag 8.69 Spectral class G5 (yellow)
PmRA 50.00 PmDE -3.0 HIP 108409 Tycho2 1687-01710-1
BD BD+19 4834
Tycho2
Tycho2 1687-01710-1 Pflag P RAmdeg 329.42998172 DEmdeg 20.24163121
PmRA 49.8 PmDE -2.7 E RAmdeg 8 E DEmdeg 9
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.24 EpDEm 1991.07
Num 6 Q RAmdeg 1.8 Q DEmdeg 0.7 Q pmRA 1.7
Q pmDE 0.6 BTmag 9.158 E BTmag 0.019 VTmag 8.686
E VTmag 0.015 Prox 17 TYC T HIP 108409
CCDM A RAdeg 329.42990083 DEdeg 20.24165194 EpRA 1990 1.70
EpDE 1990 1.66 E RAdeg 7.6 E DEdeg 9.2 Posflg D
Corr -0.1
Hipparcos
Catalog H HIP 108409 Proxy H RAhms 21 57 43.18
DEdms +20 14 29.9 Vmag 8.47 VarFlag R Vmag H
RAdeg 329.43 DEdeg 20.2417 AstroRef A Plx 7.23
CCDM 21577+2015 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 247 Rho 1.775 HD BD BD+19 4834
CD CP Dm number +19 4834 VIred 0.53
SpType G5 R SpType Coord arcsec 2000 215743.18+201429.9
Hipparcos 2
HIP 108409 Sn 15 So 3 Nc 2
RArad 5.7496363627 DErad 0.3532834518 Plx 8.13 PmRA 47.44
PmDE 4.3 E RArad 0.73 E DErad 0.83 E Plx 1.01
E pmRA 0.8 E pmDE 1.06 Hpmag 8.5722 E Hpmag 0.0027
SHp 0.016 VA 0 BV 0.9 E BV 0.495
VI 0.53
CCDM
Ccdm 21577+2015 RComp Comp A Note1
Note2 Discov num DRAs 1.15 DDEs -30.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.7 Sp F2 PmNote *
PmRA 40 PmDE 0 Dm number +19 4834 Cat1 BD
Name2 +20 2501 Cat2 AGK2/3 HD M HD
ADS BDS A15491 M ADS BDS N IDS IDS 21530N1946A
HIC 108409
 
 
21577+2015 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 215743.10+201429.1 Mag 10.37 PmRA 50.00
PmDE -3.0 Tycho2 1687-01710-2 Calc delta mag 1.68 Calc coord yes
Tycho2
Tycho2 1687-01710-2 Pflag P RAmdeg 329.42998172 DEmdeg 20.24163121
PmRA 49.8 PmDE -2.7 E RAmdeg 8 E DEmdeg 9
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.24 EpDEm 1991.07
Num 6 Q RAmdeg 1.8 Q DEmdeg 0.7 Q pmRA 1.7
Q pmDE 0.6 BTmag 11.091 E BTmag 0.059 VTmag 10.368
E VTmag 0.047 Prox 17 TYC HIP 108409
CCDM B RAdeg 329.42941972 DEdeg 20.24148028 EpRA 1990 1.69
EpDE 1990 1.64 E RAdeg 29.8 E DEdeg 37.1 Posflg D
Corr -0.1
CCDM
Ccdm 21577+2015 RComp Comp B Note1
Note2 Discov num STF2849 DRAs DDEs
R dRAs Year 1942 Theta 259 Rho 1.8
Obs 19 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15491 M ADS BDS N IDS IDS 21530N1946B
HIC 108409