20099+2055 STF2637AD

 
 
20h 09m 56.61s +20 54' 53.2" P.A. 226 sep 172.8 mag 6.56,11.94 Sp F3V dist. 45.25 pc (147.61 l.y.)
 
 
Coord 2000
20099+2055
Discov num
STF2637
Comp
AD
Coord arcsec 2000
20 09 56.61 +20 54 53.2
Date first
1887
Date last
2016
Obs
9
Pa first
229
Pa last
226
P.A. Now (θ)
226°
Sep first
158.0
Sep last
172.8
Sep. Now (ρ)
172.8"
Mag pri
6.56
Mag sec
11.94
delta mag (ΔM)
5.38
Spectral class
F3V (yellow-white)
Pri motion ra
+059
Sec motion ra
-005
Pri motion dec
+098
Sec motion dec
-003
Notes
N (See Notes)
rPM=1.045
This double is not physical.
 
 
20099+2055 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show The Sge 88276 20099+2055 STF2637 AB 1800 2018 139 332 11.6 6.56 8.85 2.29
Show 20099+2055 STF2637 AC 1800 2017 95 222 91.3 6.56 7.52 0.96
Show 20099+2055 STF2637 AD 1887 2016 9 226 172.8 6.56 11.94 5.38 <===
Show 20099+2055 STF2637 BC 1800 2017 60 215 95.7 8.85 7.52 1.33
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
226.3
Precise sep
172.8
Constellation
Sagitta
SAO
88276
HIP
99352
Tycho2
1630-00481-1
Gaia DR2
48393010560
HD
191570
HR
7705
GC
27987
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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20099+2055 STF2637 AD 2000 7 227 170.6 6.56   F3V N D 200956.61+205453.2
20099+2055 STF2637 AD 2001 8 227 170.9 6.56 11.00 F3V N D 200956.61+205453.2
20099+2055 STF2637 AD 2016 9 226 172.8 6.56 11.94 F3V N 200956.61+205453.2

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