20099+2055 STF2637AB (The Sge)

 
 
20h 09m 56.61s +20 54' 53.2" P.A. 331.00 sep 11.7 mag 6.56,8.85 Sp F3V dist. 45.25 pc (147.61 l.y.)
 
 
Coord 2000
20099+2055
Discov num
STF2637
Comp
AB
Coord arcsec 2000
20 09 56.61 +20 54 53.2
Date first
1800
Date last
2019
Obs
141
Pa first
329
Pa last
331
P.A. Now (θ)
331°
Sep first
6.0
Sep last
11.7
Sep. Now (ρ)
11.7"
Mag pri
6.56
Mag sec
8.85
delta mag (ΔM)
2.29
Spectral class
F3V (yellow-white)
Pri motion ra
+059
Sec motion ra
+066
Pri motion dec
+098
Sec motion dec
+102
Notes
N T (See Notes, Parallax indicates physical)
Visually invisible, K-band or other infrared star rPM=0.066 (< 0.3, Physical double)
This double is 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 2019 141 331 11.7 6.56 8.85 2.29 <===
Show 88276 20099+2055 STF2637 AC 1800 2017 96 222 91.3 6.56 7.52 0.96
Show 88276 20099+2055 STF2637 AD 1887 2016 10 226 172.8 6.56 11.94 5.38
Show 88276 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
331
Precise sep
11.671
Name
The Sge
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 AB 2006 115 330 11.7 6.56 8.85 F3V N DV 200956.61+205453.2
20099+2055 STF2637 AB 2008 116 331 11.6 6.56 8.85 F3V N DV 200956.61+205453.2
20099+2055 STF2637 AB 2009 122 332 11.5 6.56 8.85 F3V NVD 200956.61+205453.2
20099+2055 STF2637 AB 2011 124 331 11.6 6.56 8.85 F3V NVD 200956.61+205453.2
20099+2055 STF2637 AB 2012 127 333 11.6 6.56 8.85 F3V NVD 200956.61+205453.2
20099+2055 STF2637 AB 2013 129 332 11.5 6.56 8.85 F3V NVD 200956.61+205453.2
20099+2055 STF2637 AB 2014 131 330 11.7 6.56 8.85 F3V NVD 200956.61+205453.2
20099+2055 STF2637 AB 2015 134 331 11.6 6.56 8.85 F3V NV 200956.61+205453.2
20099+2055 STF2637 AB 2016 134 331 11.6 6.56 8.85 F3V NV 200956.61+205453.2
20099+2055 STF2637 AB 2017 137 332 11.6 6.56 8.85 F3V NV 200956.61+205453.2
20099+2055 STF2637 AB 2018 138 332 11.6 6.56 8.85 F3V NV 200956.61+205453.2
20099+2055 STF2637 AB 2019 141 331 11.7 6.56 8.85 F3V NT 200956.61+205453.2

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