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Doubles in session


Current system
19490+1909
AGC 11 AB


Nearby doubles
15' : 19492+1922
GRV 284

17' : 19487+1852
MCA 58

18' : 19493+1852
J 3012AB

18' : 19477+1913
TDT1759

19' : 19477+1905
TDT1760

19' : 19481+1855
STJ 25

19' : 19494+1851
J 3013

22' : 19476+1917
HU 347

26' : 19486+1844
J 3011AB

26' : 19498+1844
J 3014

27' : 19485+1843
J 3009

27' : 19486+1843
J 3010

29' : 19497+1842
J 3344

29' : 19470+1911
HDS2812

29' : 19508+1917
BAZ 12

31' : 19480+1936
TDT1764

35' : 19477+1938
TDT1758

36' : 19484+1834
TDT1772

37' : 19505+1839
TDT1795

38' : 19465+1924
J 1335

39' : 19477+1836
J 827

39' : 19492+1830
GRV 283

39' : 19465+1859
J 3000AB

43' : 19474+1832
BLA 6

44' : 19468+1839
OL 72

48' : 19490+1955
J 2284



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.

19490+1909 AGC 11 AB

 
 
19h 48m 58.65s +19° 08' 31.1" P.A. 174.00 sep 0.2 mag 5.64,6.04 Sp A1V dist. 78.19 pc (255.06 l.y.)
 
 
Coord 2000 19490+1909 Discov num AGC  11 Comp AB Coord arcsec 2000 19 48 58.65 +19 08 31.1
Date first 1875 Date last 2010 Obs 261
Pa first 137 Pa last 174.3 P.A. Now (θ) 141°
Sep first 0.4 Sep last 0.23 Sep. Now (ρ) 0.14"
Mag pri 5.64 Mag sec 6.04 delta mag (ΔM) 0.4 Spectral class A1V (white)
Pri motion ra +019 Sec motion ra
Pri motion dec +027 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19490+1909 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 105298 19 48 59 +19 08 31 AGC 11 AB 2010 261 174 0.2 5.64 6.04 0.40 Y <===
Show Zet Sge 105298 19 48 59 +19 08 31 STF 2585 AB,C 2016 131 311 8.3 5.04 9.01 3.97
Show 105298 19 48 59 +19 08 31 STF 2585 AB,D 2005 10 246 76.0 5.04 11.00 5.96
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta SAO 105298 HIP 97496 Tycho2 1623-02647-1
HD 187362 HR 7546 GC 27431 ADS 12973
BD BD+18 4254 Bayer Zeta Sagittae Bayer name Zet Sge Flamsteed 8 Sagittae
Flamsteed name 8 Sge Distance 78.19 Distance ly 255.06 Bayer greek ζ Sge
 
 
ORBITAL ELEMENTS
 
 
Period (P)8487.9d (23.24y)± 4.9 Periastron (T)44199.6m (1979.892y)± 5.9 Semi-major axis (a)0.13605a± 0.00044
Eccentricity (e)0.7948± 0.0019 Inclination (i)132.33°± 0.41 Longitude of periastron (ω)355.3°± 1
Node (Ω)340.97°± 0.68 Notesn ReferenceMut2010b
Equinox2000 Last observation2007 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 139.5 0.133
2001 130.6 0.098
2002 109.6 0.056
2003 4.5 0.027
2004 237.9 0.042
2005 204.2 0.083
2006 192.3 0.118
2007 185.6 0.148
2008 181.0 0.172
2009 177.5 0.192
2010 174.6 0.209
2011 172.0 0.222
2012 169.8 0.232
2013 167.6 0.238
2014 165.6 0.243
2015 163.6 0.244
2016 161.7 0.242
2017 159.6 0.238
2018 157.5 0.231
2019 155.2 0.220
2020 152.6 0.206
2021 149.6 0.189
2022 145.9 0.167
2023 141.0 0.140
2024 133.3 0.107
2025 117.2 0.067
2026 44.0 0.027
2027 257.7 0.034
2028 208.8 0.073
2029 194.4 0.110
2030 186.9 0.141


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds19490%2B1909a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19490+1909 AGC 11 AB : NOTES
 
 
discov_num notes refcode
AGC 11 zet Sge = 8 Sge. A is a suspected spectroscopic binary.
Probably quadruple. The fast RV variation found at three
spectrographs, and not explained by the visual motion, suggests a
spectroscopic companion.
AB. A measure on 1980.7256 was incorrectly attributed to ADS 12973 by
McAlister et al. (1983); it actually belongs to HR 7486. McA1983
This is part of a triple system. Finsen's (1937) observations covered Fin1937b
two periods and yield a separation close to this one. BLM1978
Calculated mass sum is 2.23 +/- 0.35 Msun; this is lower than would be
expected for early A stars, perhaps due to parallax error. Mut2010b
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 2.23 +/- 0.35, 4.39, and 2.19 Msun, respectively. Mlk2012
STF2585 AB,C: H 2 30. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Fin1937b - Finsen, W.S. 1937CiUO...98..359F
Fin1937b Union Obs. Johannesburg Circ. 98, 359, 1937
McA1983 Sc j McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C. 1983ApJS...51..309M
McA1983 ApJS 51, 309, 1983
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Mut2010b Kp - Muterspaugh, M.W., Hartkopf, W.I., Lane. B.F., O'Connell, J., Williamson, M., 2010AJ....140.1623M
Mut2010b Kulkarni, S.R., Konacki, M., Burke, B.F., Colavita, M.M., Shao, M., &
Mut2010b Wiktorowicz, S.J.
Mut2010b AJ 140, 1623, 2010
 
 
DISCOVERER
 
 
idgroup discov author
1 AGC Clark, A.G.
2 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19490+1909 AGC 11 AB 2001 243 117 0.1 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2004 246 28 0.1 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2007 248 184 0.2 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2010 261 174 0.2 5.64 6.04 A1V NO 194858.65+190831.1

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

 
 
WDS 19490+1909 AGC 11 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19490+1909 AGC 11 AB : MEASURES
 
 
No records found.

 
 
WDS 19490+1909 : VIRTUAL EYEPIECE
 
 

19490+1909 AGC 11A mag 5.64 Sp A1V 19490+1909 AGC 11B sep 0.2 P.A. 174.60 mag 6.04 19490+1909 STF2585C sep 8.0 P.A. 312.50 mag 9.01 19490+1909 STF2585D sep 72.5 P.A. 244.80 mag 11 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 19490+1909 : ALADIN DSS IMAGE @ 19h 48m 58.65s +19° 08' 31.1"
 
 
 
 
WDS 19490+1909 AGC 11 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19490+1909 AGC 11AB distance=0' 19492+1922 GRV 284 distance=15' 19487+1852 MCA 58 distance=17' 19493+1852 J 3012AB distance=18' 19493+1852 J 3012AC distance=18' 19477+1913 TDT1759 distance=18' 19477+1905 TDT1760 distance=19' 19481+1855 STJ 25 distance=19' 19494+1851 J 3013 distance=19' 19476+1917 HU 347 distance=22' 19486+1844 FYM 277BE distance=26' 19486+1844 J 3011AB distance=26' 19486+1844 FYM 277AC distance=26' 19486+1844 FYM 277AD distance=26' 19486+1844 FYM 277CD distance=26' 19498+1844 J 3014 distance=26' 19485+1843 J 3009 distance=27' 19486+1843 J 3010 distance=27' 19497+1842 J 3344 distance=29' 19470+1911 HDS2812 distance=29' 19508+1917 BAZ 12 distance=29' 19480+1936 TDT1764 distance=31' 19477+1938 TDT1758 distance=35' 19484+1834 TDT1772 distance=36' 19505+1839 TDT1795 distance=37' 19465+1924 J 1335 distance=38' 19477+1836 J 827 distance=39' 19492+1830 GRV 283 distance=39' 19465+1859 KPP 29BC distance=39' 19465+1859 J 3000AB distance=39' 19474+1832 BLA 6 distance=43' 19468+1839 OL 72 distance=44' 19490+1955 J 2284 distance=48' 19490+1956 J 2283 distance=48' 19491+1956 J 2285AB distance=49' 19491+1956 FYM 262AC distance=49' 19485+1958 J 1865 distance=50' 19459+1832 OL 71 distance=55' 19527+1848 J 151 distance=56' 19481+1814 GRV 280 distance=56' 19450+1902 J 1185 distance=57' 19528+1856 J 1177 distance=58' 19448+1907 BAZ 10 distance=59' 19463+1821 HU 344 distance=61' 19522+1951 HU 351 distance=63' 19515+1815 KPP 446 distance=65' 19479+1806 J 1187 distance=66' 19481+1803 BPM1603 distance=67' 19445+1931 HJ 2894 distance=67' 19473+1805 BPM1558 distance=68' 19444+1929 BAZ 9 distance=68' 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 19490+1909 AGC 11 AB 174 0.2
Show 19490+1909 STF2585 AB,C 311 8.3
Show 19490+1909 STF2585 AB,D 246 76.0
Show 19492+1922 GRV 284 36 52.5 15
Show 19487+1852 MCA 58 100 0.4 17
Show 19493+1852 J 3012 AB 272 6.6 18
Show 19493+1852 J 3012 AC 173 6.8 18
Show 19477+1913 TDT1759 354 0.7 18
Show 19477+1905 TDT1760 79 1.8 19
Show 19481+1855 STJ 25 78 0.9 19
Show 19494+1851 J 3013 256 7.4 19
Show 19476+1917 HU 347 324 1.5 22
Show 19486+1844 FYM 277 BE 298 12.0 26
Show 19486+1844 J 3011 AB 305 10.0 26
Show 19486+1844 FYM 277 AC 253 19.0 26
Show 19486+1844 FYM 277 AD 268 19.0 26
Show 19486+1844 FYM 277 CD 346 3.0 26
Show 19498+1844 J 3014 346 6.4 26
Show 19485+1843 J 3009 124 6.6 27
Show 19486+1843 J 3010 313 5.5 27
Show 19497+1842 J 3344 301 9.8 29
Show 19470+1911 HDS2812 8 0.2 29
Show 19508+1917 BAZ 12 288 2.5 29
Show 19480+1936 TDT1764 260 0.7 31
Show 19477+1938 TDT1758 230 0.4 35
Show 19484+1834 TDT1772 139 0.6 36
Show 19505+1839 TDT1795 115 0.6 37
Show 19465+1924 J 1335 182 1.4 38
Show 19477+1836 J 827 35 3.2 39
Show 19492+1830 GRV 283 342 34.2 39
Show 19465+1859 KPP 29 BC 237 15.8 39
Show 19465+1859 J 3000 AB 56 4.4 39
Show 19474+1832 BLA 6 242 0.1 43
Show 19468+1839 OL 72 9 7.1 44
Show 19490+1955 J 2284 64 5.8 48
Show 19490+1956 J 2283 351 10.4 48
Show 19491+1956 J 2285 AB 35 8.4 49
Show 19491+1956 FYM 262 AC 142 12.6 49
Show 19485+1958 J 1865 22 6.3 50
Show 19459+1832 OL 71 182 4.9 55
Show 19527+1848 J 151 196 4.2 56
Show 19481+1814 GRV 280 228 40.0 56
Show 19450+1902 J 1185 100 5.2 57
Show 19528+1856 J 1177 80 1.9 58
Show 19448+1907 BAZ 10 56 3.3 59
Show 19463+1821 HU 344 342 0.2 61
Show 19522+1951 HU 351 158 2.0 63
Show 19515+1815 KPP 446 161 4.7 65
Show 19479+1806 J 1187 196 1.3 66
Show 19481+1803 BPM1603 109 101.8 67
Show 19445+1931 HJ 2894 319 10.1 67

 
 
WDS 19490+1909 : COMPONENTS
 
 
  A B C
B pa=174.6°
sep=0.23"
 
C pa=312.5°
sep=8.00"
pa=313.6°
sep=8.17"
 
D pa=244.8°
sep=72.54"
pa=244.9°
sep=72.46"
pa=238.7°
sep=69.90"
 
 
19490+1909 A
 
 
Coord arcsec 2000 194858.65+190831.1 Mag 5.64 Spectral class A1V (white) PmRA 19.00
PmDE 27.0 SAO 105298 HIP 97496 Tycho2 1623-02647-1
HD 187362 HR 7546 GC 27431 BD BD+18 4254
Bayer Zeta Sagittae Bayer name Zet Sge Flamsteed 8 Sagittae Flamsteed name 8 Sge
Tycho2
Tycho2 1623-02647-1 Pflag RAmdeg 297.24441561 DEmdeg 19.14204156
PmRA 18.7 PmDE 26.5 E RAmdeg 3 E DEmdeg 3
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.48 EpDEm 1991.44
Num 18 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 1.0 BTmag 5.130 E BTmag 0.014 VTmag 5.044
E VTmag 0.009 Prox 84 TYC T HIP 97496
CCDM AB RAdeg 297.24437056 DEdeg 19.14198083 EpRA 1990 1.76
EpDE 1990 1.73 E RAdeg 3.2 E DEdeg 3.3 Posflg P
Corr 0.2
SAO
SAO 105298 DelFlag RA1950 PmRA1950 0.0014
DE1950 PmDE1950 0.031 Vmag 5 SpType A2
Double code Source 70 CatNum 27431 DM BD+18 4254
DMcomp BDsup HD 187362 M HD 0
GC 27431 RA1950rad 5.17820388 DE1950rad 0.33188182 PmRA2000 0.0015
PmDE2000 0.03
Hipparcos
Catalog H HIP 97496 Proxy H RAhms 19 48 58.65
DEdms +19 08 31.1 Vmag 5.01 VarFlag R Vmag G
RAdeg 297.244 DEdeg 19.142 AstroRef * Plx 9.99
CCDM 19490+1909 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual C M HIP
Theta Rho HD 187362 BD BD+18 4254
CD CP Dm number +18 4254 VIred 0.11
SpType A3V R SpType Coord arcsec 2000 194858.65+190831.1
Hipparcos 2
HIP 97496 Sn 55 So 3 Nc 3
RArad 5.1878929462 DErad 0.3340905458 Plx 12.79 PmRA 17.63
PmDE 26.27 E RArad 0.47 E DErad 0.39 E Plx 0.67
E pmRA 0.54 E pmDE 0.41 Hpmag 5.0402 E Hpmag 0.0006
SHp 0.006 VA 0 BV 0.095 E BV 0.008
VI 0.11
CCDM
Ccdm 19490+1909 RComp Comp A Note1
Note2 Discov num DRAs -1.32 DDEs -28.9
R dRAs 10 Year Theta Rho
Obs 4 Vmag 5.4 Sp A2 PmNote *
PmRA 21 PmDE 27 Dm number +18 4254 Cat1 BD
Name2 +19 1933 Cat2 AGK2/3 HD 187362 M HD
ADS BDS A12973 M ADS BDS N IDS IDS 19445N1853A
HIC 97496
 
 
19490+1909 B
 
 
Coord arcsec 2000 194858.65+190830.9 Mag 6.04 Calc delta mag 0.4 Calc coord yes
CCDM
Ccdm 19490+1909 RComp Comp B Note1 *
Note2 Discov num AGC 11 DRAs DDEs
R dRAs Year 1878 Theta Rho
Obs 99 Vmag 6.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12973 M ADS BDS N IDS IDS 19445N1853B
HIC 97496
 
 
19490+1909 C
 
 
Coord arcsec 2000 194858.23+190836.5 Mag 9.01 PmRA 35.00 PmDE 1.0
Calc delta mag 3.37 Calc coord yes
CCDM
Ccdm 19490+1909 RComp Comp C Note1
Note2 Discov num STF2585 DRAs DDEs
R dRAs Year 1831 Theta 311 Rho 8.6
Obs 99 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12973 M ADS BDS N IDS IDS 19445N1853C
HIC 97496
 
 
19490+1909 D
 
 
Coord arcsec 2000 194854.02+190800.2 Mag 11 PmRA 0.00 PmDE -6.0
Calc delta mag 5.36 Calc coord yes
CCDM
Ccdm 19490+1909 RComp Comp D Note1
Note2 Discov num STF2585 DRAs DDEs
R dRAs Year 1921 Theta 248 Rho 74.7
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12973 M ADS BDS N IDS IDS 19445N1853D
HIC