15382+3615 HU 1167 AB (HD 139691)

15h 38m 12.91s +36° 14' 48.6" P.A. 80.00 sep 1.4 mag 8.07,9.87 Sp F5 dist. 110.25 pc (359.64 l.y.)

Coord 2000 15382+3615 Discov num HU 1167 Comp AB Coord arcsec 2000 15 38 12.91 +36 14 48.6
Date first 1905 Date last 2016 Obs 26
Pa first 89 Pa last 79.9 P.A. Now (θ) 79.9°
Sep first 0.9 Sep last 1.363 Sep. Now (ρ) 1.363"
Mag pri 8.07 Mag sec 9.87 delta mag (ΔM) 1.8 Spectral class F5 (yellow-white)
Pri motion ra -062 Sec motion ra -060
Pri motion dec +043 Sec motion dec +035
Notes N O W (See Notes, Orbital solution, )




rPM=0.109 (< 0.3, Physical double)

This double is physical.



15382+3615 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 139691 15 38 13 +36 14 49 HU 1167 AB 2016 26 80 1.4 8.07 9.87 1.80 Y <===
Show 64821 15 38 13 +36 14 49 STF 1964 AC 2017 82 90 14.5 8.07 8.06 0.01
Show 15 38 13 +36 14 49 STF 1964 AD 2018 19 83 15.1 8.07 9.02 0.95
Show 64821 15 38 14 +36 14 50 STF 1964 CD 2019 69 21 1.5 8.06 9.02 0.96 Y
Show 64821 15 38 14 +36 14 50 WAK 1 CE 2011 5 82 0.2 8.07 8.20 0.13


Quintuple system
5 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 139691 Constellation Corona Borealis HIP 76563 Tycho2 2577-01755-1
Gaia DR2 1374656960860690560 HD 139691 ADS 9731 BD BD+36 2626
Distance 110.25 Distance ly 359.64




ORBITAL ELEMENTS

Period (P)834y± 272 Periastron (T)2021.8y± 91.9 Semi-major axis (a)1.249a± 0.1
Eccentricity (e)0 Inclination (i)97°± 2.6 Longitude of periastron (ω)
Node (Ω)80.5°± 2.6 Notesn ReferenceDru1995
Equinox Last observation1994 Grade5(1=Definitive, 9=Indet.)

label theta rho
2000 81.7 1.232
2001 81.6 1.234
2002 81.5 1.235
2003 81.5 1.237
2004 81.4 1.238
2005 81.4 1.239
2006 81.3 1.240
2007 81.3 1.241
2008 81.2 1.242
2009 81.2 1.243
2010 81.1 1.244
2011 81.1 1.245
2012 81.0 1.246
2013 81.0 1.246
2014 80.9 1.247
2015 80.9 1.247
2016 80.8 1.248
2017 80.8 1.248
2018 80.7 1.248
2019 80.6 1.249
2020 80.6 1.249
2021 80.5 1.249
2022 80.5 1.249
2023 80.4 1.249
2024 80.4 1.249
2025 80.3 1.249
2026 80.3 1.248
2027 80.2 1.248
2028 80.2 1.248
2029 80.1 1.247
2030 80.1 1.247


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



 
 


wds15382%2B3615a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic