00121+5337 BU 1026 AB (HD 761)

 
 
00h 12m 08.05s +53 37' 26.1" P.A. 325.00 sep 0.4 mag 7.25,8.46 Sp A7Vn+F2V dist. 119.9 pc (391.11 l.y.)
 
 
Coord 2000 00121+5337 Discov num BU 1026 Comp AB Coord arcsec 2000 00 12 08.05 +53 37 26.1
Date first 1888 Date last 2018 Obs 132
Pa first 330 Pa last 324.7 P.A. Now (θ) 328.7°
Sep first 0.5 Sep last 0.35 Sep. Now (ρ) 0.342"
Mag pri 7.25 Mag sec 8.46 delta mag (ΔM) 1.21 Spectral class A7Vn+F2V (white/yellow-white)
Pri motion ra +039 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00121+5337 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 761 21202 00 12 08 +53 37 26 BU 1026 AB 2018 132 325 0.4 7.25 8.46 1.21 Y <===
Show 21202 00 12 08 +53 37 26 CHR 1 AC 2001 8 298 0.3 7.25
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 761 Constellation Cassiopeia SAO 21202 HIP 981
Tycho2 3652-01234-1 Gaia DR2 420017603641437824 HD 761 GC 208
ADS 148 BD BD+52 19 Distance 119.9 Distance ly 391.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)66.84y± 0.17 Periastron (T)1986.542y± 0.029 Semi-major axis (a)0.2514a± 0.0055
Eccentricity (e)0.8282± 0.0058 Inclination (i)42.77°± 0.84 Longitude of periastron (ω)255.2°± 1.1
Node (Ω)254.9°± 1.2 Notesn ReferenceHrt1996a
Equinox2000 Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 299.4 0.286
2001 301.1 0.294
2002 302.7 0.301
2003 304.2 0.308
2004 305.6 0.314
2005 307.0 0.319
2006 308.4 0.324
2007 309.7 0.329
2008 311.0 0.333
2009 312.2 0.336
2010 313.5 0.339
2011 314.7 0.342
2012 315.9 0.344
2013 317.0 0.345
2014 318.2 0.347
2015 319.4 0.348
2016 320.5 0.348
2017 321.7 0.348
2018 322.8 0.348
2019 324.0 0.348
2020 325.1 0.347
2021 326.3 0.345
2022 327.5 0.344
2023 328.7 0.342
2024 329.9 0.339
2025 331.1 0.337
2026 332.4 0.334
2027 333.6 0.330
2028 334.9 0.326
2029 336.3 0.322
2030 337.6 0.318


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



 
 


wds00121%2B5337a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic