00315-6257 I 260 CD

 
 
00h 31m 33.36s -62° 57' 55.6" P.A. 330.00 sep 0.4 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 2021 Obs 79
Pa first 335 Pa last 330.3 P.A. Now (θ) 324.1°
Sep first 0.6 Sep last 0.405 Sep. Now (ρ) 0.425"
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 wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 248201 00 31 33 -62 57 29 B 7 AB 1932 2 153 2.6 4.36 13.50 9.14
Show Bet1 Tuc 248201 00 31 33 -62 57 29 LCL 119 AC 2021 54 168 27.1 4.28 4.51 0.23
Show 248201 00 31 33 -62 57 29 SHY 114 AE 2000 4 118 548.9 4.28 5.07 0.79
Show 248201 00 31 33 -62 57 29 SHY 114 AF 2000 3 20 999.9 4.28 9.66 5.38
Show 248201 00 31 33 -62 57 29 SHY 114 AG 2000 3 251 999.9 4.28 7.52 3.24
Show 248202 00 31 33 -62 57 56 I 260 CD 2021 79 330 0.4 4.60 6.54 1.94 Y <===
Show 248208 00 32 44 -63 01 53 B 8 Ea,Eb 1964 24 171 0.1 5.80 6.00 0.20
Show 248208 00 32 44 -63 01 53 SHY 116 EF 2000 4 12 999.9 5.07 9.66 4.59
Show 248208 00 32 44 -63 01 53 SHY 116 EH 2000 4 330 999.9 5.07 11.57 6.50
Show 248159 00 34 51 -61 54 58 SHY 113 FG 2015 4 230 999.9 9.66 7.52 2.14
Show 00 34 51 -61 54 58 SHY 117 FH 2015 4 289 999.9 9.66 11.57 1.91
Show 00 34 51 -61 54 58 SHY 117 FI 2000 3 258 999.9 9.66 11.53 1.87
Show 248159 00 18 26 -63 28 39 SHY 113 GH 2015 4 22 999.9 7.52 11.57 4.05
Show 248159 00 18 26 -63 28 39 CVN 33 GI 2006 1 233 10.2 6.15 19.60 13.45
Decuple system
9 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Tucana SAO 248202 HIP 2487 Tycho2 8844-01520-1
Gaia DR2 4900926678262376704 HD 2885 HR 127 GC 626
Bayer Beta 2 Tucanae Bayer name Bet2 Tuc Distance 51.65 Distance ly 168.48
Bayer greek β2 Tuc
 
 
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 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 276.1 0.580
2001 274.1 0.568
2002 272.0 0.553
2003 269.8 0.535
2004 267.4 0.512
2005 264.8 0.486
2006 261.8 0.453
2007 258.3 0.414
2008 253.9 0.365
2009 248.0 0.303
2010 238.4 0.221
2011 210.3 0.102
2012 75.0 0.103
2013 41.7 0.179
2014 25.0 0.218
2015 12.9 0.248
2016 3.2 0.273
2017 355.1 0.297
2018 348.1 0.320
2019 342.1 0.342
2020 336.8 0.364
2021 332.1 0.385
2022 327.9 0.405
2023 324.1 0.425
2024 320.6 0.444
2025 317.4 0.462
2026 314.4 0.479
2027 311.7 0.496
2028 309.1 0.511
2029 306.6 0.525
2030 304.3 0.539


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



 
 


wds00315-6257b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic