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Doubles in this session
 
 
Current system
19535+2405
DJU 4
13 Vul
 
 
Nearby doubles
2' : 19534+2404
POU4130

14' : 19536+2352
POU4132

17' : 19547+2402
POU4136

19' : 19539+2348
POU4134

19' : 19523+2415
POU4127

21' : 19545+2419
HDS2837

26' : 19518+2356
POU4122

26' : 19521+2348
POU4123

27' : 19548+2345
POU4137

28' : 19533+2337
A 168

29' : 19520+2345
BKO1020

29' : 19523+2428
POU4125

30' : 19517+2421
POU4121

33' : 19542+2333
BKO1046AB

34' : 19527+2336
CHE 177

34' : 19540+2333
CHE 182

35' : 19546+2435
COU1035

35' : 19524+2334
BKO 438

36' : 19518+2344
CHE 172

36' : 19554+2341
COU1036

37' : 19530+2441
J 542

38' : 19538+2328
BKO1042AB

38' : 19534+2327
BKO1036

41' : 19551+2441
EGB 9AB

42' : 19504+2409
COU1034

43' : 19548+2442
HWE 52AB

 
 
Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19535+2405 DJU   4 (13 Vul)

 
 
19h 53m 27.69s +24° 04' 46.6" P.A. 247.00 sep 1.4 mag 4.63,7.37 Sp B9.5III dist. 102.56 pc (334.55 l.y.)
 
 
Coord 2000
19535+2405
 Discov num
DJU   4
 Comp
Coord arcsec 2000
19 53 27.69 +24 04 46.6
Date first
1953
 Date last
2016
 Obs
49
Pa first
242
 Pa last
246
 P.A. Now (θ)
247°
Sep first
0.8
 Sep last
1.4
 Sep. Now (ρ)
1.38"
Mag pri
4.63
 Mag sec
7.37
 delta mag (ΔM)
2.74
 Spectral class
B9.5III (blue-white)
Pri motion ra
+020
 Sec motion ra
+020
Pri motion dec
+033
 Sec motion dec
+033
Notes
N O (See Notes, Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
245.6
 Precise sep
1.425
 Name
13 Vul
 Constellation
Vulpecula
SAO
87883
 HIP
97886
 Tycho2
2140-03051-1
 Gaia DR2
61117254272
HD
188260
 HR
7592
 GC
27544
 BD
BD+23 3820
Flamsteed
13 Vulpeculae
 Flamsteed name
13 Vul
 Distance
102.56
 Distance ly
334.55
last precise pa
245.6
 last precise sep
1.425
 
 
ORBITAL ELEMENTS
 
 
Period (P)615.25y± 104.12 Periastron (T)2027.82y± 94.79 Semi-major axis (a)1.555a± 0.241
Eccentricity (e)0.079± 0.042 Inclination (i)85.9°± 1.5 Longitude of periastron (ω)169.7°± 4.4
Node (Ω)68.1°± 0.3 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2004
label rho theta
2000 1.254 245.8
2001 1.262 245.9
2002 1.270 245.9
2003 1.277 246.0
2004 1.285 246.0
2005 1.292 246.1
2006 1.299 246.2
2007 1.306 246.2
2008 1.313 246.3
2009 1.319 246.3
2010 1.326 246.4
2011 1.332 246.5
2012 1.338 246.5
2013 1.344 246.6
2014 1.349 246.6
2015 1.355 246.7
2016 1.360 246.7
2017 1.365 246.8
2018 1.370 246.8
2019 1.375 246.9
2020 1.380 247.0
2021 1.384 247.0
2022 1.388 247.1
2023 1.392 247.1
2024 1.396 247.2
2025 1.400 247.2
2026 1.403 247.3
2027 1.407 247.3
2028 1.410 247.4
2029 1.413 247.4
2030 1.415 247.5

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.		  
 grafico orbita


wds19535%2B2405a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19535+2405 DJU 4 2004 42 246 1.3 4.63 7.37 B9.5III NOD 195327.69+240446.6
19535+2405 DJU 4 2007 43 246 1.3 4.63 7.37 B9.5III NOD 195327.69+240446.6
19535+2405 DJU 4 2009 44 245 1.4 4.63 7.37 B9.5III NOD 195327.69+240446.6
19535+2405 DJU 4 2011 46 245 1.4 4.63 7.37 B9.5III NO 195327.69+240446.6
19535+2405 DJU 4 2012 48 245 1.4 4.63 7.37 B9.5III NO 195327.69+240446.6
19535+2405 DJU 4 2016 49 246 1.4 4.63 7.37 B9.5III NO 195327.69+240446.6

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