18562+0412 STF2417AB (Alya)

 
 
18h 56m 13.18s +04 12' 12.9" P.A. 104 sep 22.5 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
2017
Obs
226
Pa first
106
Pa last
104
P.A. Now (θ)
104°
Sep first
22.1
Sep last
22.5
Sep. Now (ρ)
22.5"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Alya 124068 18562+0412 STF2417 AB 1755 2017 226 104 22.5 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
 
 
Precise pa
104.3
Precise sep
22.501
Common name
Alya
Other names
Alga
Cdsa2 id
STF 2417 AB
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
Ra deg
18.936994444444444
De deg
4.2035833333333334
last precise pa
104.3
last precise sep
22.501
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18562+0412 STF2417 AB 2007 197 104 22.4 4.59 4.93 A5V A5Vn N D 185613.18+041212.9
18562+0412 STF2417 AB 2008 205 104 22.3 4.59 4.93 A5V A5Vn N DV 185613.18+041212.9
18562+0412 STF2417 AB 2009 210 103 23.0 4.59 4.93 A5V A5Vn NVD 185613.18+041212.9
18562+0412 STF2417 AB 2010 214 104 22.4 4.59 4.93 A5V A5Vn NVD 185613.18+041212.9
18562+0412 STF2417 AB 2011 215 99 24.7 4.59 4.93 A5V A5Vn NVD 185613.18+041212.9
18562+0412 STF2417 AB 2012 217 104 22.3 4.59 4.93 A5V A5Vn NVD 185613.18+041212.9
18562+0412 STF2417 AB 2014 220 103 22.4 4.59 4.93 A5V A5Vn NVD 185613.18+041212.9
18562+0412 STF2417 AB 2015 221 105 22.5 4.59 4.93 A5V+A5Vn NV 185613.18+041212.9
18562+0412 STF2417 AB 2016 225 104 22.6 4.59 4.93 A5V+A5Vn NV 185613.18+041212.9
18562+0412 STF2417 AB 2017 226 104 22.5 4.59 4.93 A5V+A5Vn NV 185613.18+041212.9

If you need more information about this double, apply for a data request form to the WDS.