18443+3940 STFA 37AD

 
 
18h 44m 20.34s +39 40' 12.4" P.A. 172 sep 208.6 mag 5.15,5.38 Sp A4V dist. 49.78 pc (162.38 l.y.)
 
 
Coord 2000
18443+3940
Discov num
STFA 37
Comp
AD
Coord arcsec 2000
18 44 20.34 +39 40 12.4
Date first
1903
Date last
2013
Obs
17
Pa first
172
Pa last
172
P.A. Now (θ)
172°
Sep first
209.0
Sep last
208.6
Sep. Now (ρ)
208.6"
Mag pri
5.15
Mag sec
5.38
delta mag (ΔM)
0.23
Spectral class
A4V (white)
Pri motion ra
+011
Sec motion ra
+006
Pri motion dec
+061
Sec motion dec
+052
Notes
N (See Notes)
rPM=0.166 (< 0.3, Physical double)
This double is physical.
 
 
18443+3940 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Eps1 Lyr 67310 18443+3940 STF2382 AB 1777 2016 615 345 2.3 5.15 6.10 0.95 Y
Show Double Double 67310 18443+3940 STFA 37 AB,CD 1830 2016 97 172 209.5 4.67 4.56 0.11
Show 67310 18443+3940 STFA 37 AD 1903 2013 17 172 208.6 5.15 5.38 0.23 <===
Show 67310 18443+3940 STFA 37 AI 1863 2015 23 137 149.5 5.15 10.12 4.97
Show 67310 18443+3940 STFA 37 BC 1903 2011 14 172 210.9 6.10 5.25 0.85
Show 67310 18443+3940 STFA 37 BD 1903 2000 11 172 209.6 6.10 5.38 0.72
Show 67310 18443+3940 STFA 37 BI 1872 2015 10 137 151.3 6.10 10.12 4.02
Show 67315 18443+3940 CHR 77 Ca,Cb 1985 2005 5 225 0.1 5.25
Show 67315 18443+3940 STF2383 CD 1777 2016 621 75 2.4 5.25 5.38 0.13 Y
Show 67315 18443+3940 SHJ 277 CD,F 2002 2015 3 0 93.3 4.56 12.70 8.14
Show 67315 18443+3940 SHJ 277 CD,G 2000 2015 4 293 75.1 4.56 14.20 9.64
Show 67315 18443+3940 SHJ 277 CD,H 2000 2015 4 313 95.7 4.56 13.90 9.34
Show 67315 18443+3940 STF2383 CE 2000 2015 8 334 63.2 5.25 12.30 7.05
Show 67315 18443+3940 STFA 37 CI 1863 2012 18 37 120.4 5.25 10.12 4.87
Show 67315 18443+3940 STFA 37 DI 1909 2000 6 37 121.6 5.38 10.12 4.74
Show 18443+3940 SHJ 277 EF 1831 2015 10 37 45.6 12.30 12.70 0.40
Show 18443+3940 SHJ 277 EG 1878 2015 6 236 50.0 12.30 14.20 1.90
Show 18443+3940 STFA 37 EI 2000 2011 3 68 108.9 12.30 10.12 2.18
Show 18443+3940 SHJ 277 GH 1878 2015 8 358 35.8 14.20 13.90 0.30
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
172.1
Precise sep
208.64
Constellation
Lyra
SAO
67310
HIP
91919
Tycho2
3122-03438-2
HD
173582
HR
7051
GC
25667
BD
BD+39 3509
Bayer
Epsilon 1 Lyrae
Bayer name
Eps1 Lyr
Flamsteed
4 Lyrae
Flamsteed name
4 Lyr
Distance
49.78
Distance ly
162.38
last precise pa
172.1
last precise sep
208.64
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18443+3940 STFA 37 AD 1991 11 172 208.7 5.15 5.38 N 184420.34+394012.4
18443+3940 STFA 37 AD 2008 12 172 208.3 5.15 5.38 N 184420.34+394012.4
18443+3940 STFA 37 AD 2010 14 172 206.7 5.15 5.38 N 184420.34+394012.4
18443+3940 STFA 37 AD 2012 17 172 208.7 5.15 5.38 A4V N 184420.34+394012.4
18443+3940 STFA 37 AD 2013 18 172 208.6 5.15 5.38 A4V N 184420.34+394012.4

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