18562+0412 STF 2417 AB (Alya)

 
 
18h 56m 13.18s +04° 12' 12.9" P.A. 106.00 sep 22.4 mag 4.59,4.93 Sp A5V+A5Vn dist. 47.42 pc (154.68 l.y.)
 
 
Coord 2000 18562+0412 Discov num STF2417 Comp AB Coord arcsec 2000 18 56 13.18 +04 12 12.9
Date first 1755 Date last 2019 Obs 236
Pa first 106 Pa last 105.5 P.A. Now (θ) 105.5°
Sep first 22.1 Sep last 22.435 Sep. Now (ρ) 22.435"
Mag pri 4.59 Mag sec 4.93 delta mag (ΔM) 0.34 Spectral class A5V+A5Vn (white/white)
Pri motion ra +038 Sec motion ra +052
Pri motion dec +027 Sec motion dec +031
Notes N V (See Notes, Proper motion indicates physical)
rPM=0.241 (< 0.3, Physical double)
This double is physical.
 
 
18562+0412 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Alya 124068 18 56 13 +04 12 13 STF 2417 AB 2019 236 106 22.4 4.59 4.93 0.34 <===
Show 124068 18 56 13 +04 12 13 STF 2417 AC 2007 18 58 421.0 4.59 6.78 2.19
Show 124070 18 56 15 +04 12 08 STF 2417 BC 2007 17 56 405.6 4.93 6.78 1.85
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Alya Var name NSV11557 Ser Constellation Serpens SAO 124068
HIP 92946 Tycho2 0457-00687-1 Gaia DR2 4281199284413726208 HD 175638
HR 7141 GC 25991 ADS 11853 BD BD+04 3916
Bayer Theta 1 Serpentis Bayer name The1 Ser Flamsteed 63 Serpentis Flamsteed name 63 Ser
FK5 709 Distance 47.42 Distance ly 154.68 Bayer greek θ1 Ser
Other names Alga