18078+2606 CHR 67 Aa,Ab

18h 07m 49.56s +26° 06' 04.4" P.A. 300.00 sep 0.1 mag 5.90,8.80 Sp A3V dist. 49.6 pc (161.8 l.y.)

Coord 2000 18078+2606 Discov num CHR  67 Comp Aa,Ab Coord arcsec 2000 18 07 49.56 +26 06 04.4
Date first 1985 Date last 2021 Obs 18
Pa first 175 Pa last 300 P.A. Now (θ) 309.7°
Sep first 0.1 Sep last 0.14 Sep. Now (ρ) 0.208"
Mag pri 5.90 Mag sec 8.80 delta mag (ΔM) 2.9 Spectral class A3V (white)
Pri motion ra -010 Sec motion ra
Pri motion dec +026 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



18078+2606 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 85753 18 07 50 +26 06 04 CHR 67 Aa,Ab 2021 18 300 0.1 5.90 8.80 2.90 Y <===
Show 100 Her 85753 18 07 50 +26 06 04 STF 2280 AB 2019 221 182 14.3 5.81 5.84 0.03
Show 85753 18 07 50 +26 06 04 STF 2280 AC 2000 5 127 79.9 5.87 11.80 5.93


Quadruple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Var name NSV10253 Her Constellation Hercules SAO 85753 HIP 88818
Tycho2 2095-03225-1 Gaia DR2 4579990675911466624 HD 166045 HR 6781
GC 24721 ADS 11089 BD BD+26 3178 Flamsteed 100 Herculis
Flamsteed name 100 Her Distance 49.6 Distance ly 161.8




ORBITAL ELEMENTS

Period (P)16.579y± 0.041 Periastron (T)1986.411y± 0.09 Semi-major axis (a)0.177a± 0.018
Eccentricity (e)0.933± 0.013 Inclination (i)37.3°± 8.7 Longitude of periastron (ω)107.2°± 8.9
Node (Ω)33.3°± 10.1 Notesn ReferenceTok2021c
Equinox2000 Last observation2019 Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 340.4 0.208
2001 345.8 0.170
2002 355.5 0.115
2003 164.0 0.010
2004 289.6 0.104
2005 301.3 0.156
2006 307.6 0.195
2007 312.1 0.224
2008 315.6 0.246
2009 318.6 0.262
2010 321.3 0.273
2011 323.9 0.278
2012 326.4 0.279
2013 328.9 0.274
2014 331.6 0.264
2015 334.5 0.248
2016 338.0 0.225
2017 342.4 0.194
2018 349.0 0.150
2019 4.0 0.082
2020 272.2 0.061
2021 295.7 0.128
2022 304.3 0.174
2023 309.7 0.208
2024 313.6 0.234
2025 316.9 0.254
2026 319.8 0.267
2027 322.4 0.276
2028 324.9 0.279
2029 327.4 0.278
2030 330.0 0.271


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



 
 


wds18078%2B2606c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic