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Doubles in session


Current system
20099+2055
STF 2637 AC


Nearby doubles
6' : 20099+2100
S 737

20' : 20113+2056
J 1875

24' : 20086+2041
BRT2467

27' : 20082+2105
J 1168

29' : 20108+2029
HDS2875

30' : 20120+2100
HJ 907AB

33' : 20113+2121
HO 587

37' : 20102+2131
TDT2042

37' : 20124+2043
NSN 730

40' : 20072+2106
STF2631

45' : 20119+2020
J 1876

45' : 20124+2124
DAM1255

46' : 20131+2107
GRV 323

48' : 20115+2013
GRV 320

52' : 20093+2004
HU 355

56' : 20076+2139
TDT2000

62' : 20136+2021
BU 1484

64' : 20138+2021
HJ 2941

69' : 20132+2145
J 1194

71' : 20051+2039
BUP 203AB

72' : 20078+1950
WEB 12

72' : 20136+2145
J 834

78' : 20063+1954
WAK 19

78' : 20154+2045
BRT2469

78' : 20153+2120
J 3067

78' : 20065+1957
J 1233AB



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.

20099+2055 STF 2637 AC

 
 
20h 09m 56.61s +20° 54' 53.2" P.A. 222.00 sep 91.9 mag 6.56,7.52 Sp F3V+F5IV dist. 45.25 pc (147.61 l.y.)
 
 
Coord 2000 20099+2055 Discov num STF2637 Comp AC Coord arcsec 2000 20 09 56.61 +20 54 53.2
Date first 1800 Date last 2020 Obs 97
Pa first 226 Pa last 221.6 P.A. Now (θ) 221.6°
Sep first 64.5 Sep last 91.93 Sep. Now (ρ) 91.93"
Mag pri 6.56 Mag sec 7.52 delta mag (ΔM) 0.96 Spectral class F3V+F5IV (yellow-white/yellow-white)
Pri motion ra +059 Sec motion ra +005
Pri motion dec +098 Sec motion dec -005
Notes N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=1.017
This double is not physical.
 
 
20099+2055 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show The Sge 88276 20 09 57 +20 54 53 STF 2637 AB 2020 143 331 11.6 6.56 8.85 2.29
Show 88276 20 09 57 +20 54 53 STF 2637 AC 2020 97 222 91.9 6.56 7.52 0.96 <===
Show 88276 20 09 57 +20 54 53 STF 2637 AD 2016 10 226 172.8 6.56 11.94 5.38
Show 88270 20 09 56 +20 55 04 STF 2637 BC 2017 60 215 95.7 8.85 7.52 1.33
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta SAO 88276 HIP 99352 Tycho2 1630-00481-1
Gaia DR2 1829590548393010560 HD 191571 HR 7705 GC 27982
ADS 13442 BD BD+20 4453 Bayer Theta Sagittae Bayer name The Sge
Flamsteed 17 Sagittae Flamsteed name 17 Sge Distance 45.25 Distance ly 147.61
Bayer greek θ Sge
 
 
WDS 20099+2055 STF 2637 AC : NOTES
 
 
discov_num notes refcode
STF2637 the Sge = 17 Sge. STTA201 = STFA 49. B is BD+20@4455.
AC: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
BC: Mt. Wilson spectral type of B is G3, C is K1.
AB: HJL 272. HJL1986
AB: H 3 24. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
HJL1986 Pa - Halbwachs, J.L. 1986A&AS...66..131H
HJL1986 A&AS 66, 131, 1986
HJL1986 (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986 only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 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
20099+2055 STF2637 AC 2006 81 222 90.1 6.56 7.52 F3V NLD 200956.61+205453.2
20099+2055 STF2637 AC 2008 82 221 90.0 6.56 7.52 F3V NLD 200956.61+205453.2
20099+2055 STF2637 AC 2009 83 222 89.9 6.56 7.52 F3V NLD 200956.61+205453.2
20099+2055 STF2637 AC 2013 86 222 90.0 6.56 7.52 F3V+F5IV NLD 200956.61+205453.2
20099+2055 STF2637 AC 2015 90 222 91.2 6.56 7.52 F3V+F5IV NL U 200956.61+205453.2
20099+2055 STF2637 AC 2016 91 222 91.5 6.56 7.52 F3V+F5IV NL U 200956.61+205453.2
20099+2055 STF2637 AC 2017 93 222 91.3 6.56 7.52 F3V+F5IV NL U 200956.61+205453.2
20099+2055 STF2637 AC 2020 97 222 91.9 6.56 7.52 F3V+F5IV NL U 200956.61+205453.2

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

 
 
WDS 20099+2055 STF 2637 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20099+2055 STF 2637 AC : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 12/09/07 Robert   95.00 1.98 215.00     2
 
 
WDS 20099+2055 : VIRTUAL EYEPIECE
 
 

20099+2055 STF2637A mag 6.56 Sp F3V 20099+2055 STF2637B sep 12.2 P.A. 335.60 mag 8.85 Sp F2 20099+2055 STF2637C sep 89.3 P.A. 219.70 mag 7.52 Sp F5IV 20099+2055 STF2637D sep 166.9 P.A. 224.30 mag 11.94 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 20099+2055 : ALADIN DSS IMAGE @ 20h 09m 56.61s +20° 54' 53.2"
 
 
 
 
WDS 20099+2055 STF 2637 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20099+2055 STF2637AC distance=0' 20099+2055 STF2637BC distance=1' 20099+2100 S 737 distance=6' 20113+2056 J 1875 distance=20' 20086+2041 BRT2467 distance=24' 20082+2105 J 1168 distance=27' 20108+2029 HDS2875 distance=29' 20120+2100 HJ 907AB distance=30' 20120+2100 HJ 907AC distance=30' 20113+2121 HO 587 distance=33' 20102+2131 TDT2042 distance=37' 20124+2043 NSN 730 distance=37' 20072+2106 STF2631 distance=40' 20119+2020 J 1876 distance=45' 20124+2124 DAM1255 distance=45' 20131+2107 GRV 323 distance=46' 20115+2013 GRV 320 distance=48' 20093+2004 HU 355 distance=52' 20076+2139 TDT2000 distance=56' 20136+2021 BU 1484 distance=62' 20138+2021 HJ 2941 distance=64' 20132+2145 J 1194 distance=69' 20051+2039 BUP 203AB distance=71' 20051+2039 BUP 203AC distance=71' 20051+2039 BLL 44AD distance=71' 20078+1950 WEB 12 distance=72' 20136+2145 J 834 distance=72' 20063+1954 WAK 19 distance=78' 20154+2045 BRT2469 distance=78' 20153+2120 J 3067 distance=78' 20065+1957 J 1233AB distance=78' 20065+1957 DAM 191AC distance=78' 20065+1957 DAM 191BD distance=78' 20079+2207 BRT2466 distance=79' 20063+2200 STJ 37 distance=82' 20114+2217 COU 217AB distance=85' 20114+2217 COU 217AC distance=85' 20039+2034 COU 216 distance=88' 20036+2050 GRV 308 distance=88' 20123+2215 J 3057 distance=89' 20045+2009 BRT2465 distance=89' 20112+2222 GRV 319 distance=90' 20163+2033 HDS2888 distance=93' 20134+2214 J 3061 distance=93' 20148+2159 HDS2886 distance=93' 20080+2224 RAO 426 distance=94' 20033+2034 BRT2463 distance=96' 20125+1924 J 3059 distance=96' 20124+2224 GRV 322AB distance=97' 20124+2224 GRV 322AC distance=97' 20141+2213 STF2655AB distance=98' 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 20099+2055 STF2637 AB 331 11.6
Show 20099+2055 STF2637 AD 226 172.8
Show 20099+2055 STF2637 AC 222 91.9
Show 20099+2055 STF2637 BC 215 95.7 1
Show 20099+2100 S 737 128 101.0 6
Show 20113+2056 J 1875 100 8.8 20
Show 20086+2041 BRT2467 55 4.4 24
Show 20082+2105 J 1168 193 0.9 27
Show 20108+2029 HDS2875 231 0.3 29
Show 20120+2100 HJ 907 AB 137 5.7 30
Show 20120+2100 HJ 907 AC 229 20.1 30
Show 20113+2121 HO 587 65 11.5 33
Show 20102+2131 TDT2042 359 0.6 37
Show 20124+2043 NSN 730 146 3.2 37
Show 20072+2106 STF2631 339 4.7 40
Show 20119+2020 J 1876 99 8.2 45
Show 20124+2124 DAM1255 23 7.1 45
Show 20131+2107 GRV 323 204 19.0 46
Show 20115+2013 GRV 320 152 31.3 48
Show 20093+2004 HU 355 352 1.2 52
Show 20076+2139 TDT2000 71 0.7 56
Show 20136+2021 BU 1484 323 23.7 62
Show 20138+2021 HJ 2941 109 6.2 64
Show 20132+2145 J 1194 115 6.3 69
Show 20051+2039 BUP 203 AB 247 13.4 71
Show 20051+2039 BUP 203 AC 102 59.4 71
Show 20051+2039 BLL 44 AD 95 75.3 71
Show 20078+1950 WEB 12 77 40.1 72
Show 20136+2145 J 834 277 2.3 72
Show 20063+1954 WAK 19 166 2.0 78
Show 20154+2045 BRT2469 60 3.9 78
Show 20153+2120 J 3067 140 6.3 78
Show 20065+1957 J 1233 AB 245 6.9 78
Show 20065+1957 DAM 191 AC 179 9.8 78
Show 20065+1957 DAM 191 BD 218 9.8 78
Show 20079+2207 BRT2466 185 8.1 79
Show 20063+2200 STJ 37 198 1.4 82
Show 20114+2217 COU 217 AB 343 1.5 85
Show 20114+2217 COU 217 AC 291 1.5 85
Show 20039+2034 COU 216 218 0.5 88
Show 20036+2050 GRV 308 213 38.1 88
Show 20123+2215 J 3057 104 6.7 89
Show 20045+2009 BRT2465 209 3.0 89
Show 20112+2222 GRV 319 352 69.3 90
Show 20163+2033 HDS2888 283 0.6 93
Show 20134+2214 J 3061 267 5.4 93
Show 20148+2159 HDS2886 64 1.0 93
Show 20080+2224 RAO 426 302 3.0 94
Show 20033+2034 BRT2463 13 3.2 96
Show 20125+1924 J 3059 155 7.1 96
Show 20124+2224 GRV 322 AB 187 54.2 97

 
 
WDS 20099+2055 : COMPONENTS
 
 
  A B C
B pa=335.6°
sep=12.19"
 
C pa=219.7°
sep=89.31"
pa=213.1°
sep=95.27"
 
D pa=224.3°
sep=166.95"
pa=220.6°
sep=171.74"
pa=229.7°
sep=78.28"
 
 
20099+2055 A
 
 
Name The Sge Coord arcsec 2000 200956.61+205453.2 Mag 6.56 Spectral class F3V (yellow-white)
PmRA 59.00 PmDE 98.0 SAO 88276 HIP 99352
Tycho2 1630-00481-1 HD 191570 HR 7705 GC 27987
BD BD+20 4453 Bayer Theta Sagittae Bayer name The Sge Flamsteed 17 Sagittae
Flamsteed name 17 Sge
Tycho2
Tycho2 1630-00481-1 Pflag RAmdeg 302.48603322 DEmdeg 20.91502405
PmRA 59.3 PmDE 96.8 E RAmdeg 4 E DEmdeg 4
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.43 EpDEm 1991.21
Num 15 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.3
Q pmDE 0.9 BTmag 6.957 E BTmag 0.015 VTmag 6.561
E VTmag 0.010 Prox 116 TYC T HIP 99352
CCDM A RAdeg 302.48588750 DEdeg 20.91479667 EpRA 1990 1.74
EpDE 1990 1.54 E RAdeg 3.9 E DEdeg 4.4 Posflg
Corr 0.2
SAO
SAO 88276 DelFlag RA1950 PmRA1950 0.0038
DE1950 PmDE1950 0.103 Vmag 6.3 SpType F2
Double code Source 70 CatNum 27987 DM BD+20 4453
DMcomp A BDsup HD 191570 M HD 0
GC 27987 RA1950rad 5.26974183 DE1950rad 0.36242381 PmRA2000 0.0038
PmDE2000 0.101
Hipparcos
Catalog H HIP 99352 Proxy RAhms 20 09 56.61
DEdms +20 54 53.2 Vmag 6.51 VarFlag R Vmag H
RAdeg 302.486 DEdeg 20.9148 AstroRef A Plx 22.22
CCDM 20099+2054 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 191570 BD BD+20 4453
CD CP Dm number +20 4453 VIred 0.45
SpType F5IV R SpType Coord arcsec 2000 200956.61+205453.2
Hipparcos 2
HIP 99352 Sn 95 So 3 Nc 1
RArad 5.2793744733 DErad 0.3650319349 Plx 22.1 PmRA 59.68
PmDE 98.43 E RArad 0.68 E DErad 0.58 E Plx 0.89
E pmRA 0.9 E pmDE 0.84 Hpmag 6.6016 E Hpmag 0.0053
SHp 0.017 VA 0 BV 0.394 E BV 0.006
VI 0.46
 
 
20099+2055 B
 
 
Coord arcsec 2000 200956.25+205504.3 Coord calc 200956.25+205504.3 Mag 8.85 Spectral class F2 (yellow-white)
PmRA 64.00 PmDE 102.0 HIP 99351 Calc delta mag 2.29
Hipparcos
Catalog H HIP 99351 Proxy RAhms 20 09 56.20
DEdms +20 55 03.3 Vmag 8.82 VarFlag R Vmag H
RAdeg 302.484 DEdeg 20.9176 AstroRef B Plx 18.75
CCDM 20099+2054 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD BD
CD CP Dm number VIred 0.8
SpType F2 R SpType Coord arcsec 2000 200956.20+205503.3
Hipparcos 2
HIP 99351 Sn 95 So 3 Nc 1
RArad 5.2793445072 DErad 0.3650808239 Plx 22.41 PmRA 56.18
PmDE 97.46 E RArad 0.76 E DErad 0.66 E Plx 0.92
E pmRA 1.03 E pmDE 0.99 Hpmag 9.0549 E Hpmag 0.0474
SHp 0 VA 0 BV 0.74 E BV 0.028
VI 0.79
 
 
20099+2055 C
 
 
Coord arcsec 2000 200952.54+205344.5 Mag 7.52 Spectral class F5IV (yellow-white) PmRA 5.00
PmDE -5.0 SAO 88270 Tycho2 1630-00917-1 HD 191571
GC 27982 DM BD+20 4452 Flamsteed 17 Sagittae Flamsteed name 17 Sge
Calc delta mag 0.96 Calc coord yes
Tycho2
Tycho2 1630-00917-1 Pflag RAmdeg 302.46829073 DEmdeg 20.89651823
PmRA 4.8 PmDE -4.6 E RAmdeg 6 E DEmdeg 6
E pmRA 0.9 E pmDE 0.8 EpRAm 1990.96 EpDEm 1990.75
Num 14 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.2 BTmag 8.885 E BTmag 0.018 VTmag 7.520
E VTmag 0.012 Prox 885 TYC T HIP
CCDM RAdeg 302.46827889 DEdeg 20.89652889 EpRA 1990 1.73
EpDE 1990 1.60 E RAdeg 5.6 E DEdeg 6.2 Posflg
Corr 0.4
SAO
SAO 88270 DelFlag RA1950 PmRA1950 -0.0003
DE1950 PmDE1950 0.009 Vmag 7.3 SpType K2
Double code Source 70 CatNum 27982 DM BD+20 4452
DMcomp BDsup HD 191571 M HD 0
GC 27982 RA1950rad 5.2694439 DE1950rad 0.36212693 PmRA2000 -0.0002
PmDE2000 0.007
 
 
20099+2055 D
 
 
Coord arcsec 2000 200948.28+205253.8 Mag 11.94 PmRA -5.00 PmDE -3.0
Calc delta mag 5.38 Calc coord yes