20099+2055 STF 2637 BC
20h 09m 56.25s +20° 55' 04.3" P.A. 215.00 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 |
214.7 |
|
P.A. Now (θ) |
214.7° |
|
| Sep first |
66.2 |
|
Sep last |
95.687 |
|
Sep. Now (ρ) |
95.687" |
|
| 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
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=1.015
This double is not physical.
20099+2055 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
The Sge |
88276 |
20 09 57 +20 54 53 |
STF 2637 AB |
2020 |
143 |
331 |
11.6 |
6.56 |
8.85 |
2.29 |
|
|
| Show |
|
88276 |
20 09 57 +20 54 53 |
STF 2637 AC |
2020 |
97 |
222 |
91.9 |
6.56 |
7.52 |
0.96 |
|
|
| Show |
|
88276 |
20 09 57 +20 54 53 |
STF 2637 AD |
2016 |
10 |
226 |
172.8 |
6.56 |
11.94 |
5.38 |
|
|
| Show |
|
88270 |
20 09 56 +20 55 04 |
STF 2637 BC |
2017 |
60 |
215 |
95.7 |
8.85 |
7.52 |
1.33 |
|
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagitta |
|
SAO |
88270 |
|
HIP |
99351 |
|
Tycho2 |
1630-00917-1 |
|
| Gaia DR2 |
1829590548393015168 |
|
HD |
191571 |
|
GC |
27982 |
|
DM |
BD+20 4452 |
|
| Bayer |
Theta Sagittae |
|
Bayer name |
The Sge |
|
Flamsteed |
17 Sagittae |
|
Flamsteed name |
17 Sge |
|
| Distance |
44.62 |
|
Distance ly |
145.55 |
|
Bayer greek |
θ Sge |
|
