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 |
|
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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 |
Notes | n | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (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 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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