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