19062+3026 STF 2454 AB (HD 178091)

 
 
19h 06m 09.37s +30° 26' 18.8" P.A. 291.00 sep 1.3 mag 8.34,9.72 Sp K0 dist. 77.34 pc (252.28 l.y.)
 
 
Coord 2000 19062+3026 Discov num STF2454 Comp AB Coord arcsec 2000 19 06 09.37 +30 26 18.8
Date first 1831 Date last 2016 Obs 180
Pa first 204 Pa last 290.6 P.A. Now (θ) 290.6°
Sep first 0.8 Sep last 1.348 Sep. Now (ρ) 1.348"
Mag pri 8.34 Mag sec 9.72 delta mag (ΔM) 1.38 Spectral class K0 (yellow-orange)
Pri motion ra +064 Sec motion ra +064
Pri motion dec -005 Sec motion dec -005
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19062+3026 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 178091 67811 19 06 09 +30 26 19 STF 2454 AB 2016 180 291 1.3 8.34 9.72 1.38 Y <===
Show 67811 19 06 09 +30 26 19 DRD 2 AC 2015 4 261 31.3 8.34 13.50 5.16
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 178091 Constellation Lyra SAO 67811 HIP 93798
Tycho2 2640-01110-1 Gaia DR2 2042453731775320704 HD 178091 GC 26307
ADS 12040 BD BD+30 3413 Distance 77.34 Distance ly 252.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)559.46y Periastron (T)1700.68y Semi-major axis (a)1.421a
Eccentricity (e)0.55 Inclination (i)65.2° Longitude of periastron (ω)292.9°
Node (Ω)145.1° Notesn ReferenceMsn2014b
Equinox2000 Last observation2011 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 286.0 1.297
2001 286.3 1.301
2002 286.5 1.306
2003 286.8 1.310
2004 287.1 1.314
2005 287.3 1.319
2006 287.6 1.323
2007 287.8 1.327
2008 288.1 1.332
2009 288.4 1.336
2010 288.6 1.340
2011 288.9 1.345
2012 289.1 1.349
2013 289.4 1.353
2014 289.6 1.357
2015 289.9 1.361
2016 290.1 1.365
2017 290.3 1.370
2018 290.6 1.374
2019 290.8 1.378
2020 291.1 1.382
2021 291.3 1.386
2022 291.5 1.390
2023 291.8 1.394
2024 292.0 1.398
2025 292.2 1.402
2026 292.5 1.405
2027 292.7 1.409
2028 292.9 1.413
2029 293.2 1.417
2030 293.4 1.421


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



 
 


wds19062%2B3026a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic