15419+1828 DRS 17 AB (Tau7 Ser)
15h 41m 54.71s +18° 27' 50.5" P.A. 86.00 sep 2.4 mag 5.30,10.40 Sp A2m dist. 53.08 pc (173.15 l.y.)
Coord 2000 |
15419+1828 |
|
Discov num |
DRS 17 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 41 54.71 +18 27 50.5 |
|
Date first |
2002 |
|
Date last |
2008 |
|
Obs |
3 |
|
Pa first |
53 |
|
Pa last |
86.4 |
|
P.A. Now (θ) |
86.4° |
|
Sep first |
2.3 |
|
Sep last |
2.4 |
|
Sep. Now (ρ) |
2.4" |
|
Mag pri |
5.30 |
|
Mag sec |
10.40 |
|
delta mag (ΔM) |
5.1 |
|
Spectral class |
A2m (white) |
|
Pri motion ra |
-072 |
|
Sec motion ra |
|
|
Pri motion dec |
+056 |
|
Sec motion dec |
|
|
Notes |
K
(K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
15419+1828 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Tau7 Ser |
101686 |
15 41 55 +18 27 50 |
DRS 17 AB |
2008 |
3 |
86 |
2.4 |
5.30 |
10.40 |
5.10 |
|
<=== |
Show |
|
101686 |
15 41 55 +18 27 50 |
TOK 302 AC |
2020 |
6 |
274 |
249.2 |
5.82 |
12.33 |
6.51 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
Tau7 Ser |
|
Constellation |
Serpens |
|
SAO |
101686 |
|
HIP |
76878 |
|
Tycho2 |
1498-01788-1 |
|
Gaia DR2 |
1197801408889764480 |
|
HD |
140232 |
|
HR |
5845 |
|
GC |
21111 |
|
BD |
BD+18 3059 |
|
Bayer |
Tau 7 Serpentis |
|
Bayer name |
Tau7 Ser |
|
Flamsteed |
22 Serpentis |
|
Flamsteed name |
22 Ser |
|
Distance |
53.08 |
|
Distance ly |
173.15 |
|
Bayer greek |
τ7 Ser |
|