19535+2405 DJU 4 (13 Vul)

 
 
19h 53m 27.69s +24 04' 46.6" P.A. 248.00 sep 1.5 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 2020 Obs 51
Pa first 242 Pa last 247.8 P.A. Now (θ) 247.8°
Sep first 0.8 Sep last 1.53 Sep. Now (ρ) 1.53"
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)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 13 Vul Constellation Vulpecula SAO 87883 HIP 97886
Tycho2 2140-03051-1 Gaia DR2 1828386961117254272 HD 188260 HR 7592
GC 27544 BD BD+23 3820 Flamsteed 13 Vulpeculae Flamsteed name 13 Vul
Distance 102.56 Distance ly 334.55
 
 
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 Notesn ReferenceCve2008d
Equinox2000 Last observation2004 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 245.8 1.254
2001 245.9 1.262
2002 245.9 1.270
2003 246.0 1.277
2004 246.0 1.285
2005 246.1 1.292
2006 246.2 1.299
2007 246.2 1.306
2008 246.3 1.313
2009 246.3 1.319
2010 246.4 1.326
2011 246.5 1.332
2012 246.5 1.338
2013 246.6 1.344
2014 246.6 1.349
2015 246.7 1.355
2016 246.7 1.360
2017 246.8 1.365
2018 246.8 1.370
2019 246.9 1.375
2020 247.0 1.380
2021 247.0 1.384
2022 247.1 1.388
2023 247.1 1.392
2024 247.2 1.396
2025 247.2 1.400
2026 247.3 1.403
2027 247.3 1.407
2028 247.4 1.410
2029 247.4 1.413
2030 247.5 1.415


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



 
 


wds19535%2B2405a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic