18562+0412 STF2417AB (Alya)

 
 
18H 56M 13.18S +04 12' 12.9" P.A. 104 SEP 22.6 MAG 4.59,4.93 SP A5V+A5VN
 
 
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
2016
Obs
225
Pa first
106
Pa last
104
P.A. Now (θ)
104°
Sep first
22.1
Sep last
22.6
Sep. Now (ρ)
22.6"
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)
This double is physical.
 
 
18562+0412 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Alya 124068 18562+0412 STF2417 AB 1755 2016 225 104 22.6 4.59 4.93 0.34 <===
Show 18562+0412 STF2417 AC 1908 2007 18 58 421.0 4.59 6.78 2.19
Show 124070 18562+0412 STF2417 BC 1908 2007 17 56 405.6 4.93 6.78 1.85
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name
Alya
Other names
Alga
Constellation
Serpens
SAO
124068
Tycho2
0457-00687-1
HD
175638
HR
7141
Bayer
Theta 1 Serpentis
Bayer name
The1 Ser
Flamsteed
63 Serpentis
Flamsteed name
63 Ser
last precise pa
103.9
last precise sep
22.641