19482+7016 STF2603 (Tyl)

 
 
19h 48m 10.35s +70 16' 04.5" P.A. 21.70 sep 3.2 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
2017
Obs
155
Pa first
355
Pa last
21
P.A. Now (θ)
21.7°
Sep first
2.6
Sep last
3.2
Sep. Now (ρ)
3.2"
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
 
 
Precise pa
20.6
Precise sep
3.16
Common name
Tyl
Meaning
red fish
Other names
KIN YU
Constellation
Draco
SAO
9540
HIP
97433
Tycho2
4449-02652-1
Gaia DR2
16253487360
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
last precise pa
20.6
last precise sep
3.16
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2012
label rho theta
2000 3.157 18.6
2001 3.159 18.8
2002 3.161 18.9
2003 3.163 19.1
2004 3.165 19.2
2005 3.167 19.4
2006 3.169 19.5
2007 3.171 19.7
2008 3.173 19.8
2009 3.175 20.0
2010 3.177 20.1
2011 3.180 20.3
2012 3.182 20.4
2013 3.184 20.6
2014 3.186 20.7
2015 3.188 20.9
2016 3.190 21.0
2017 3.192 21.2
2018 3.194 21.3
2019 3.196 21.5
2020 3.199 21.6
2021 3.201 21.7
2022 3.203 21.9
2023 3.205 22.0
2024 3.207 22.2
2025 3.210 22.3
2026 3.212 22.5
2027 3.214 22.6
2028 3.216 22.8
2029 3.219 22.9
2030 3.221 23.0

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






wds19482%2B7016a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
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

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