01084-5515 RST1205AB (Zet Phe)

 
 
01H 08M 23.08S -55 14' 44.7" P.A. 125.9 SEP 0.51 MAG 4.02,6.80 SP B6V+B9V DIST. 91.58 PC (298.73 L.Y.)
 
 
Coord 2000
01084-5515
Discov num
RST1205
Comp
AB
Coord arcsec 2000
01 08 23.08 -55 14 44.7
Date first
1931
Date last
2015
Obs
25
Pa first
22
Pa last
120
P.A. Now (θ)
125.9°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.51"
Mag pri
4.02
Mag sec
6.80
delta mag (ΔM)
2.78
Spectral class
B6V+B9V (blue-white/blue-white)
Pri motion ra
+010
Sec motion ra
Pri motion dec
+016
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
01084-5515 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Zet Phe 232306 01084-5515 RST1205 AB 1931 2015 25 126 0.5 4.02 6.80 2.78 Y <===
Show 232306 01084-5515 RMK 2 AB,C 1835 2016 42 239 6.8 4.00 8.23 4.23
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Zet Phe
Constellation
Phoenix
SAO
232306
HIP
5348
Tycho2
8476-01302-1
HD
6882
HR
338
GC
1387
CD
CD-55 267
CP
CP-55 241
Bayer
Zeta Phoenicis
Bayer name
Zet Phe
Distance
91.58
Distance ly
298.73
last precise pa
119.7
last precise sep
0.563
 
 
ORBITAL ELEMENTS
 
 
Period (P)210.37y± 61.4 Periastron (T)2122.81y± 0.4 Semi-major axis (a)0.804a± 0.132
Eccentricity (e)0.348± 0.17 Inclination (i)61.9°± 3.7 Longitude of periastron (ω)271.7°± 23.5
Node (Ω)33.5°± 9.3 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1999
label rho theta
2000 0.550 95.5
2001 0.545 97.1
2002 0.541 98.8
2003 0.537 100.5
2004 0.533 102.2
2005 0.529 103.9
2006 0.526 105.7
2007 0.523 107.4
2008 0.520 109.2
2009 0.518 111.0
2010 0.515 112.9
2011 0.514 114.7
2012 0.512 116.6
2013 0.511 118.4
2014 0.511 120.3
2015 0.510 122.2
2016 0.510 124.1
2017 0.511 125.9
2018 0.512 127.8
2019 0.513 129.7
2020 0.514 131.5
2021 0.516 133.4
2022 0.518 135.2
2023 0.521 137.0
2024 0.524 138.8
2025 0.527 140.6
2026 0.530 142.3
2027 0.534 144.0
2028 0.538 145.7
2029 0.542 147.4
2030 0.547 149.1

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic