00315-6257 I   260CD

 
 
00H 31M 33.36S -62 57' 55.6" P.A. 355.1 SEP 0.3 MAG 4.60,6.54 SP A2V+A7V DIST. 51.65 PC (168.48 L.Y.)
 
 
Coord 2000
00315-6257
Discov num
I   260
Comp
CD
Coord arcsec 2000
00 31 33.36 -62 57 55.6
Date first
1895
Date last
2014
Obs
74
Pa first
335
Pa last
196
P.A. Now (θ)
355.1°
Sep first
0.6
Sep last
0.2
Sep. Now (ρ)
0.3"
Mag pri
4.60
Mag sec
6.54
delta mag (ΔM)
1.94
Spectral class
A2V+A7V (white/white)
Pri motion ra
+095
Sec motion ra
+095
Pri motion dec
-049
Sec motion dec
-049
Notes
N O V (See Notes, Orbital solution, Proper motion indicates physical)
This double is physical.
 
 
00315-6257 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Bet1 Tuc 248201 00315-6257 B 7 AB 1926 1932 2 153 2.6 4.36 13.50 9.14
Show 248201 00315-6257 LCL 119 AC 1826 2016 50 168 27.3 4.28 4.51 0.23
Show 248201 00315-6257 SHY 114 AE 1991 2000 4 118 548.9 4.28 5.07 0.79
Show 248201 00315-6257 SHY 114 AF 1991 2000 3 20 999.9 4.28 9.66 5.38
Show 248201 00315-6257 SHY 114 AG 1991 2000 3 251 999.9 4.28 7.52 3.24
Show 248202 00315-6257 I 260 CD 1895 2014 74 355 0.3 4.60 6.54 1.94 Y <===
Show 248208 00315-6257 B 8 Ea,Eb 1925 1964 24 171 0.1 5.80 6.00 0.20
Show 248208 00315-6257 SHY 116 EF 1991 2000 4 12 999.9 5.07 9.66 4.59
Show 248208 00315-6257 SHY 116 EH 1991 2000 4 330 999.9 5.07 11.57 6.50
Show 00315-6257 SHY 113 FG 1991 2000 3 230 999.9 9.66 7.52 2.14
Show 00315-6257 SHY 117 FH 1991 2000 3 289 999.9 9.66 11.57 1.91
Show 00315-6257 SHY 117 FI 1991 2000 3 258 999.9 9.66 11.53 1.87
Show 248159 00315-6257 SHY 113 GH 1991 2000 3 22 999.9 7.52 11.57 4.05
Show 248159 00315-6257 CVN 33 GI 2006 2006 1 233 10.2 6.15 19.60 13.45
Decuple system
9 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Tucana
SAO
248202
HIP
2487
Tycho2
8844-01520-1
HD
2885
HR
127
GC
626
Bayer
Beta 2 Tucanae
Bayer name
Bet2 Tuc
Distance
51.65
Distance ly
168.48
last precise pa
195.7
last precise sep
0.244
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.73y± 0.34 Periastron (T)2011.62y± 0.01 Semi-major axis (a)0.495a± 0.001
Eccentricity (e)0.81± 0.001 Inclination (i)124.7°± 0.3 Longitude of periastron (ω)112.2°± 0.2
Node (Ω)241.6°± 0.2 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.580 276.1
2001 0.568 274.1
2002 0.553 272.0
2003 0.535 269.8
2004 0.512 267.4
2005 0.486 264.8
2006 0.453 261.8
2007 0.414 258.3
2008 0.365 253.9
2009 0.303 248.0
2010 0.221 238.4
2011 0.102 210.3
2012 0.103 75.0
2013 0.179 41.7
2014 0.218 25.0
2015 0.248 12.9
2016 0.273 3.2
2017 0.297 355.1
2018 0.320 348.1
2019 0.342 342.1
2020 0.364 336.8
2021 0.385 332.1
2022 0.405 327.9
2023 0.425 324.1
2024 0.444 320.6
2025 0.462 317.4
2026 0.479 314.4
2027 0.496 311.7
2028 0.511 309.1
2029 0.525 306.6
2030 0.539 304.3

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