00277-1625 YR    1Aa,Ab

 
 
00h 27m 40.29s -16 24' 34.3" P.A. 176 sep 0.16 mag 7.51,8.72 Sp F6V dist. 74.68 pc (243.61 l.y.)
 
 
Coord 2000
00277-1625
Discov num
YR    1
Comp
Aa,Ab
Coord arcsec 2000
00 27 40.29 -16 24 34.3
Date first
1997
Date last
2017
Obs
12
Pa first
165
Pa last
167
P.A. Now (θ)
176°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.16"
Mag pri
7.51
Mag sec
8.72
delta mag (ΔM)
1.21
Spectral class
F6V (yellow-white)
Pri motion ra
+207
Sec motion ra
Pri motion dec
+033
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
00277-1625 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 147286 00277-1625 YR 1 Aa,Ab 1997 2017 12 176 0.2 7.51 8.72 1.21 Y <===
Show 147286 00277-1625 HJ 1968 AB 1830 2015 52 234 36.8 7.26 10.03 2.77
Show 147286 00277-1625 BU 1343 AC 1891 2015 15 135 77.1 7.26 12.58 5.32
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
167.3
Precise sep
0.119
Constellation
Cetus
SAO
147286
HIP
2190
HD
2394
BD
BD-17 61
Distance
74.68
Distance ly
243.61
last precise pa
167.3
last precise sep
0.119
 
 
ORBITAL ELEMENTS
 
 
Period (P)19.162y± 0.211 Periastron (T)2013.626y± 0.167 Semi-major axis (a)0.1495a± 0.0077
Eccentricity (e)0.323± 0.035 Inclination (i)68.2°± 1 Longitude of periastron (ω)234.8°± 6.9
Node (Ω)178.5°± 1.7 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.171 182.2
2001 0.172 187.2
2002 0.164 192.3
2003 0.150 198.3
2004 0.130 205.9
2005 0.107 216.5
2006 0.085 232.8
2007 0.070 258.4
2008 0.069 290.4
2009 0.083 316.6
2010 0.102 334.0
2011 0.115 346.4
2012 0.114 357.3
2013 0.091 11.0
2014 0.051 42.9
2015 0.049 124.0
2016 0.093 157.1
2017 0.132 168.9
2018 0.157 176.0
2019 0.170 181.4
2020 0.173 186.4
2021 0.166 191.5
2022 0.152 197.3
2023 0.133 204.5
2024 0.111 214.4
2025 0.088 229.6
2026 0.071 253.6
2027 0.068 285.3
2028 0.080 313.0
2029 0.099 331.7
2030 0.114 344.6

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

grafico orbita





wds00277-1625a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00277-1625 YR 1 Aa,Ab 1999 2 179 0.2 7.51 8.72 F6V D 002740.29-162434.3
00277-1625 YR 1 Aa,Ab 2008 3 129 0.1 7.51 8.72 F6V N D 002740.29-162434.3
00277-1625 YR 1 Aa,Ab 2014 5 107 0.0 7.51 8.72 F6V N 002740.29-162434.3
00277-1625 YR 1 Aa,Ab 2017 12 167 0.1 7.51 8.72 F6V 002740.29-162434.3

If you need more information about this double, apply for a data request form to the WDS.