18448+3736 STFA 38 AD (Zet2 Lyr)

 
 
18h 44m 46.36s +37° 36' 18.4" P.A. 150.00 sep 43.7 mag 4.34,5.62 Sp F0IVv dist. 47.69 pc (155.56 l.y.)
 
 
Coord 2000 18448+3736 Discov num STFA 38 Comp AD Coord arcsec 2000 18 44 46.36 +37 36 18.4
Date first 1779 Date last 2018 Obs 115
Pa first 152 Pa last 149.7 P.A. Now (θ) 149.7°
Sep first 42.0 Sep last 43.732 Sep. Now (ρ) 43.732"
Mag pri 4.34 Mag sec 5.62 delta mag (ΔM) 1.28 Spectral class F0IVv (yellow-white)
Pri motion ra +029 Sec motion ra +019
Pri motion dec +027 Sec motion dec +021
Notes N T (See Notes, Parallax indicates physical)
rPM=0.294 (< 0.3, Physical double)
This double is physical.
 
 
18448+3736 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 67321 18 44 46 +37 36 18 BU 968 AB 2012 9 50 22.3 4.34 15.80 11.46
Show 67321 18 44 46 +37 36 18 BU 968 AC 2012 8 270 48.9 4.34 13.30 8.96
Show Zet2 Lyr 67321 18 44 46 +37 36 18 STFA 38 AD 2018 115 150 43.7 4.34 5.62 1.28 <===
Show 67321 18 44 46 +37 36 18 BU 968 AE 2012 9 298 62.5 4.34 13.50 9.16
Show 67321 18 44 46 +37 36 18 FYM 42 AF 2012 3 330 77.5 4.34 13.70 9.36
Sextuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Zet2 Lyr Var name NSV11308 Lyr Constellation Lyra SAO 67321
HIP 91973 Tycho2 3118-02080-1 Gaia DR2 2096875399811529472 HD 173649
HR 7057 GC 25678 ADS 11639 BD BD+37 3223
Bayer Zeta 2 Lyrae Bayer name Zet2 Lyr Flamsteed 7 Lyrae Flamsteed name 7 Lyr
Distance 47.69 Distance ly 155.56 Bayer greek ζ2 Lyr