20099+2055 STF2637BC

 
 
20h 09m 56.25s +20 55' 04.3" P.A. 215 sep 95.7 mag 8.85,7.52 Sp F2 dist. 44.62 pc (145.55 l.y.)
 
 
Coord 2000
20099+2055
Discov num
STF2637
Comp
BC
Coord arcsec 2000
20 09 56.25 +20 55 04.3
Date first
1800
Date last
2017
Obs
60
Pa first
221
Pa last
215
P.A. Now (θ)
215°
Sep first
66.2
Sep last
95.7
Sep. Now (ρ)
95.7"
Mag pri
8.85
Mag sec
7.52
delta mag (ΔM)
1.33
Spectral class
F2 (yellow-white)
Pri motion ra
+064
Sec motion ra
+005
Pri motion dec
+102
Sec motion dec
-005
Notes
N L (See Notes, Linear solution)
rPM=1.015
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 2017 137 332 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
215.4
Precise sep
95.687
Constellation
Sagitta
SAO
88276
HIP
99351
Tycho2
1630-00481-1
Gaia DR2
48393015168
HD
191570
HR
7705
DM
BD+20 4453
Flamsteed
17 Sagittae
Flamsteed name
17 Sge
Distance
44.62
Distance ly
145.55
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20099+2055 STF2637 BC 2004 51 215 94.3 8.90 7.30 NLD 200956.25+205504.3
20099+2055 STF2637 BC 2013 56 216 94.5 8.85 7.52 NL 200956.25+205504.3
20099+2055 STF2637 BC 2016 57 215 95.9 8.85 7.52 F2 NL 200956.25+205504.3
20099+2055 STF2637 BC 2017 59 215 95.7 8.85 7.52 F2 NL 200956.25+205504.3

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