01057+2128 YR 6 Aa,Ab

 
 
01h 05m 40.93s +21 28' 23.6" P.A. 312.00 sep 0.1 mag 5.70,6.60 Sp B9.5V dist. 84.32 pc (275.05 l.y.)
 
 
Coord 2000 01057+2128 Discov num YR    6 Comp Aa,Ab Coord arcsec 2000 01 05 40.93 +21 28 23.6
Date first 1999 Date last 2017 Obs 21
Pa first 289 Pa last 312 P.A. Now (θ) 140°
Sep first 0.1 Sep last 0.141 Sep. Now (ρ) 0.069"
Mag pri 5.70 Mag sec 6.60 delta mag (ΔM) 0.9 Spectral class B9.5V (blue-white)
Pri motion ra +044 Sec motion ra
Pri motion dec -014 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
01057+2128 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 74482 01 05 41 +21 28 24 YR 6 Aa,Ab 2017 21 312 0.1 5.70 6.60 0.90 Y <===
Show Psi1 Psc 74482 01 05 41 +21 28 24 STF 88 AB 2020 166 159 29.9 5.27 5.45 0.18
Show 74482 01 05 41 +21 28 24 STF 88 AC 2017 15 124 90.4 5.27 10.71 5.44
Show 74483 01 05 42 +21 27 56 STF 88 BC 2017 18 109 68.5 5.45 10.71 5.26
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV397 Psc Constellation Pisces SAO 74482 HIP 5131
Tycho2 1202-02124-1 Gaia DR2 2790497534190737152 HD 6456 HR 310
GC 1309 ADS 899 BD BD+20 156 Bayer Psi 1 Piscium
Bayer name Psi1 Psc Flamsteed 74 Piscium Flamsteed name 74 Psc Distance 84.32
Distance ly 275.05 Bayer greek ψ1 Psc
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.44y± 0.26 Periastron (T)2007.512y± 0.041 Semi-major axis (a)0.1143a± 0.0017
Eccentricity (e)0.519± 0.027 Inclination (i)77.43°± 0.81 Longitude of periastron (ω)305.4°± 2.3
Node (Ω)134.8°± 1.2 Notesn ReferenceHor2010
Equinox2000 Last observation2010 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 296.1 0.099
2001 301.2 0.119
2002 305.0 0.132
2003 308.3 0.139
2004 311.5 0.135
2005 315.3 0.117
2006 321.6 0.078
2007 10.0 0.016
2008 132.1 0.059
2009 145.6 0.068
2010 163.3 0.049
2011 204.2 0.032
2012 258.3 0.040
2013 282.4 0.064
2014 293.0 0.089
2015 299.2 0.111
2016 303.4 0.127
2017 306.9 0.137
2018 310.1 0.138
2019 313.5 0.127
2020 318.2 0.098
2021 331.0 0.045
2022 120.2 0.036
2023 140.0 0.069
2024 154.0 0.058
2025 181.7 0.038
2026 237.8 0.033
2027 274.5 0.053
2028 289.2 0.078
2029 296.8 0.102
2030 301.7 0.121


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



 
 


wds01057%2B2128a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic