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Current system
19482+7016
STF 2603
Tyl


Nearby doubles
20' : 19495+6957
MLB1086AB

25' : 19528+7009
TDT1819

49' : 19463+7104
TDT1724

49' : 19403+7045
TDT1619

50' : 19405+6946
MLB1084

53' : 19433+6929
MLB 415

69' : 19540+6915
UC 4049

69' : 20016+7027
A 865

70' : 19457+6908
MLB 357

70' : 19355+7045
TDT1562

78' : 20026+6952
SKF1243

80' : 19503+6857
MLB 358

85' : 19509+6852
HDS2826

90' : 19324+6940
STT 590AB
Alsafi

90' : 20020+6922
MLB 293

91' : 19432+7143
TDT1671

96' : 19371+7134
SKF1240

100' : 20016+7131
TDT1918

100' : 20049+6926
HDS2863AB

105' : 19344+7136
KU 2

117' : 19412+7208
FOX 245

119' : 19311+7141
HDS2773

122' : 19414+6820
LDS2779

128' : 19432+7222
HDS2800

129' : 19286+6859
LDS2438

130' : 19396+6815
MLB 292



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.

19482+7016 STF 2603 (Tyl)

 
 
19h 48m 10.35s +70° 16' 04.5" P.A. 20.00 sep 3.5 mag 4.01,6.87 Sp G7IIIb dist. 45.37 pc (148 l.y.)
 
 
Coord 2000 19482+7016 Discov num STF2603 Comp Coord arcsec 2000 19 48 10.35 +70 16 04.5
Date first 1823 Date last 2022 Obs 159
Pa first 355 Pa last 20 P.A. Now (θ) 20°
Sep first 2.6 Sep last 3.5 Sep. Now (ρ) 3.5"
Mag pri 4.01 Mag sec 6.87 delta mag (ΔM) 2.86 Spectral class G7IIIb (yellow)
Pri motion ra +079 Sec motion ra
Pri motion dec +039 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Tyl Var name NSV12465 Dra Constellation Draco SAO 9540
HIP 97433 Tycho2 4449-02652-1 Gaia DR2 2251191616253487360 HD 188119
HR 7582 GC 27471 ADS 13007 BD BD+69 1070
Bayer Epsilon Draconis Bayer name Eps Dra Flamsteed 63 Draconis Flamsteed name 63 Dra
Distance 45.37 Distance ly 148 Bayer greek ε Dra
Meaning red fish
 
 
ORBITAL ELEMENTS
 
 
Period (P)2753.3257y± 1292.0608 Periastron (T)1598.5654y± 561.9011 Semi-major axis (a)8.01058a± 4.07389
Eccentricity (e)0.83937± 0.13066 Inclination (i)70.932°± 9.569 Longitude of periastron (ω)111.258°± 28.09
Node (Ω)128.309°± 68.794 Notesn ReferenceIzm2019
Equinox Last observation2012 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 18.6 3.157
2001 18.8 3.159
2002 18.9 3.161
2003 19.1 3.163
2004 19.2 3.165
2005 19.4 3.167
2006 19.5 3.169
2007 19.7 3.171
2008 19.8 3.173
2009 20.0 3.175
2010 20.1 3.177
2011 20.3 3.180
2012 20.4 3.182
2013 20.6 3.184
2014 20.7 3.186
2015 20.9 3.188
2016 21.0 3.190
2017 21.2 3.192
2018 21.3 3.194
2019 21.5 3.196
2020 21.6 3.199
2021 21.7 3.201
2022 21.9 3.203
2023 22.0 3.205
2024 22.2 3.207
2025 22.3 3.210
2026 22.5 3.212
2027 22.6 3.214
2028 22.8 3.216
2029 22.9 3.219
2030 23.0 3.221


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


 
  


wds19482%2B7016a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19482+7016 STF 2603 (Tyl) : NOTES
 
 
discov_num notes refcode
STF2603 eps Dra = 63 Dra. A spectroscopic binary. D__1883
H 1 8. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
D__1883 Ma - Dembowski, H. ...................
D__1883 Misure micrometriche di Stelle Doppie e multiple...
D__1883 (Rome, Coi tipi del Salviucci), vol. I, 1883
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
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
19482+7016 STF2603 2005 148 19 3.2 4.01 6.87 G7IIIb N D 194810.35+701604.5
19482+7016 STF2603 2007 150 20 3.1 4.01 6.87 G7IIIb N D 194810.35+701604.5
19482+7016 STF2603 2008 149 341 4.8 4.01 6.87 G7IIIb N D 194810.35+701604.5
19482+7016 STF2603 2010 151 19 3.0 4.01 6.87 G7IIIb N D 194810.35+701604.5
19482+7016 STF2603 2012 152 21 3.1 4.01 6.87 G7IIIb N D 194810.35+701604.5
19482+7016 STF2603 2017 153 21 3.2 4.01 6.87 G7IIIb N 194810.35+701604.5
19482+7016 STF2603 2021 158 22 3.0 4.01 6.87 G7IIIb NO 194810.35+701604.5
19482+7016 STF2603 2022 159 20 3.5 4.01 6.87 G7IIIb NO 194810.35+701604.5

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

 
 
WDS 19482+7016 STF 2603 (Tyl) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 22/08/04 daedalus1 mean difficulty separated 20   Seeing Pickering 5, poor. Measures: theta 020, rho 3.5 +/- 0.116. Really a spectacular view.

 
 
WDS 19482+7016 STF 2603 (Tyl) : MEASURES
 
 
No records found.

 
 
WDS 19482+7016 (Tyl) : VIRTUAL EYEPIECE
 
 

19482+7016 STF2603A mag 4.01 Sp G7IIIb 19482+7016 STF2603B sep 3.3 P.A. 7.00 mag 6.87 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 19482+7016 (Tyl) : ALADIN DSS IMAGE @ 19h 48m 10.35s +70° 16' 04.5"
 
 
 
 
WDS 19482+7016 STF 2603 (Tyl) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19482+7016 STF2603 (Tyl) distance=0' 19495+6957 MLB1086AB distance=20' 19528+7009 TDT1819 distance=25' 19463+7104 TDT1724 distance=49' 19403+7045 TDT1619 distance=49' 19405+6946 MLB1084 distance=50' 19433+6929 MLB 415 distance=53' 19540+6915 UC 4049 distance=69' 20016+7027 A 865 distance=69' 19457+6908 MLB 357 distance=70' 19355+7045 TDT1562 distance=70' 20026+6952 SKF1243 distance=78' 19503+6857 MLB 358 distance=80' 19509+6852 HDS2826 distance=85' 19324+6940 STT 590AB (Alsafi) distance=90' 19324+6940 WGA 1AC (Alsafi) distance=90' 20020+6922 MLB 293 distance=90' 19432+7143 TDT1671 distance=91' 19371+7134 SKF1240 distance=96' 20016+7131 TDT1918 distance=100' 20049+6926 HDS2863AB distance=100' 19344+7136 KU 2 distance=105' 19412+7208 FOX 245 distance=117' 19311+7141 HDS2773 distance=119' 19414+6820 LDS2779 distance=122' 19432+7222 HDS2800 distance=128' 19286+6859 LDS2438 distance=129' 19396+6815 MLB 292 distance=130' 19393+7220 A 1191 distance=131' 20065+7157 TDT1983 distance=135' 20055+6834 TDT1964 distance=138' 19330+6819 LDS2445 distance=142' 19327+6811 LDS2444 distance=149' 19299+7215 LDS1909 distance=149' 19349+6804 MLB 291 distance=150' 20005+6759 MLB 359AB distance=152' 20005+6759 MLB 359AC distance=152' 20065+6817 TDT1984 distance=154' 19361+6755 MLB1083 distance=156' 20039+6754 MLB 295 distance=163' 20028+6752 LDS2447AB distance=164' 20028+6752 LDS2447AC distance=164' 19348+6748 MLB 290BC distance=165' 19348+6748 MLB 290AB distance=165' 19528+6732 LDS2446 distance=166' 19419+6733 MLB1085 distance=168' 19522+6726 OSO 114 distance=172' 19493+7309 TDT1776 distance=174' 19593+6729 TDT1903 distance=178' 19357+7308 A 864 distance=182' 20048+7300 A 867 distance=182' 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 Tyl 19482+7016 STF2603 20 3.5
Show 19495+6957 MLB1086 AB 339 5.2 20
Show 19528+7009 TDT1819 256 0.4 25
Show 19463+7104 TDT1724 252 1.3 49
Show 19403+7045 TDT1619 199 1.6 49
Show 19405+6946 MLB1084 95 11.1 50
Show 19433+6929 MLB 415 350 8.7 53
Show 19540+6915 UC 4049 58 61.7 69
Show 20016+7027 A 865 89 2.6 69
Show 19457+6908 MLB 357 260 1.8 70
Show 19355+7045 TDT1562 357 0.9 70
Show 20026+6952 SKF1243 187 46.0 78
Show 19503+6857 MLB 358 254 3.9 80
Show 19509+6852 HDS2826 39 0.4 85
Show Alsafi 19324+6940 STT 590 AB 339 492.8 90
Show Alsafi 19324+6940 WGA 1 AC -1 11.0 90
Show 20020+6922 MLB 293 91 4.8 90
Show 19432+7143 TDT1671 121 0.4 91
Show 19371+7134 SKF1240 34 8.5 96
Show 20016+7131 TDT1918 191 0.7 100
Show 20049+6926 HDS2863 AB 3 0.9 100
Show 19344+7136 KU 2 232 0.6 105
Show 19412+7208 FOX 245 68 5.5 117
Show 19311+7141 HDS2773 149 0.2 119
Show 19414+6820 LDS2779 300 1.6 122
Show 19432+7222 HDS2800 141 0.5 128
Show 19286+6859 LDS2438 210 9.4 129
Show 19396+6815 MLB 292 318 7.8 130
Show 19393+7220 A 1191 252 3.1 131
Show 20065+7157 TDT1983 112 0.5 135
Show 20055+6834 TDT1964 340 2.0 138
Show 19330+6819 LDS2445 43.0 142
Show 19327+6811 LDS2444 175 11.9 149
Show 19299+7215 LDS1909 58 32.9 149
Show 19349+6804 MLB 291 170 3.9 150
Show 20005+6759 MLB 359 AB 284 4.9 152
Show 20005+6759 MLB 359 AC 326 30.9 152
Show 20065+6817 TDT1984 39 1.6 154
Show 19361+6755 MLB1083 162 8.8 156
Show 20039+6754 MLB 295 305 7.3 163
Show 20028+6752 LDS2447 AB 180 125.4 164
Show 20028+6752 LDS2447 AC 226 141.0 164
Show 19348+6748 MLB 290 BC 308 4.1 165
Show 19348+6748 MLB 290 AB 78 19.3 165
Show 19528+6732 LDS2446 265 29.2 166
Show 19419+6733 MLB1085 179 15.7 168
Show 19522+6726 OSO 114 257 23.4 172
Show 19493+7309 TDT1776 130 0.8 174
Show 19593+6729 TDT1903 87 0.4 178
Show 19357+7308 A 864 11 0.8 182
Show 20048+7300 A 867 151 1.0 182

 
 
WDS 19482+7016 : COMPONENTS
 
 
  A
B pa=7.0°
sep=3.31"
 
 
19482+7016 A
 
 
Componente originario normalizzato AB Common name Tyl Meaning red fish Coord arcsec 2000 194810.35+701604.5
Mag 4.01 Spectral class G7IIIb (yellow) PmRA 79.00 PmDE 39.0
SAO 9540 HIP 97433 Tycho2 4449-02652-1 HD 188119
HR 7582 GC 27471 BD BD+69 1070 Bayer Epsilon Draconis
Bayer name Eps Dra Flamsteed 63 Draconis Flamsteed name 63 Dra
Tycho2
Tycho2 4449-02652-1 Pflag RAmdeg 297.04311623 DEmdeg 70.26792937
PmRA 78.6 PmDE 39.2 E RAmdeg 3 E DEmdeg 4
E pmRA 0.6 E pmDE 0.6 EpRAm 1991.35 EpDEm 1990.74
Num 15 Q RAmdeg 1.3 Q DEmdeg 2.0 Q pmRA 1.3
Q pmDE 2.0 BTmag 5.070 E BTmag 0.014 VTmag 4.010
E VTmag 0.009 Prox 32 TYC T HIP 97433
CCDM A RAdeg 297.04258361 DEdeg 70.26783556 EpRA 1990 1.77
EpDE 1990 1.38 E RAdeg 3.3 E DEdeg 3.8 Posflg
Corr 0.2
SAO
SAO 9540 DelFlag RA1950 PmRA1950 0.0154
DE1950 PmDE1950 0.039 Vmag 4 SpType K0
Double code Source 71 CatNum 747 DM BD+69 1070
DMcomp BDsup HD 188119 M HD 0
GC 27471 RA1950rad 5.18515962 DE1950rad 1.22418629 PmRA2000 0.0161
PmDE2000 0.037
Hipparcos
Catalog H HIP 97433 Proxy H RAhms 19 48 10.21
DEdms +70 16 04.2 Vmag 3.84 VarFlag R Vmag G
RAdeg 297.043 DEdeg 70.2678 AstroRef A Plx 22.4
CCDM 19482+7016 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 17 Rho 3.167 HD 188119 BD BD+69 1070
CD CP Dm number +69 1070 VIred 0.88
SpType G8III R SpType Coord arcsec 2000 194810.21+701604.2
Hipparcos 2
HIP 97433 Sn 17 So 3 Nc 2
RArad 5.1843706449 DErad 1.2264050852 Plx 22.04 PmRA 79.31
PmDE 39.08 E RArad 0.38 E DErad 0.38 E Plx 0.37
E pmRA 0.5 E pmDE 0.51 Hpmag 3.9974 E Hpmag 0.0004
SHp 0.004 VA 0 BV 0.888 E BV 0.001
VI 0.88
CCDM
Ccdm 19482+7016 RComp Comp A Note1
Note2 Discov num DRAs -1.66 DDEs 4.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.0 Sp K0 PmNote *
PmRA 78 PmDE 38 Dm number +69 1070 Cat1 BD
Name2 +70 689 Cat2 AGK2/3 HD 188119 M HD
ADS BDS A13007 M ADS BDS N IDS IDS 19485N7001A
HIC 97433
 
 
19482+7016 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 194810.43+701607.8 Mag 6.87 Calc delta mag 2.86
Calc coord yes
CCDM
Ccdm 19482+7016 RComp Comp B Note1
Note2 Discov num STF2603 DRAs DDEs
R dRAs Year 1957 Theta 015 Rho 3.1
Obs 99 Vmag 7.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13007 M ADS BDS N N IDS IDS 19485N7001B
HIC 97433