01361-2954 HJ 3447 (Tau Scl)
01h 36m 08.50s -29° 54' 26.5" P.A. 201.00 sep 0.8 mag 5.97,7.35 Sp F2V dist. 69.35 pc (226.22 l.y.)
Coord 2000 |
01361-2954 |
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Discov num |
HJ 3447 |
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Comp |
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Coord arcsec 2000 |
01 36 08.50 -29 54 26.5 |
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Date first |
1835 |
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Date last |
2021 |
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Obs |
122 |
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Pa first |
254 |
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Pa last |
200.5 |
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P.A. Now (θ) |
200.5° |
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Sep first |
3.0 |
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Sep last |
0.832 |
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Sep. Now (ρ) |
0.832" |
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Mag pri |
5.97 |
|
Mag sec |
7.35 |
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delta mag (ΔM) |
1.38 |
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Spectral class |
F2V (yellow-white) |
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Pri motion ra |
+105 |
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Sec motion ra |
+105 |
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Pri motion dec |
+038 |
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Sec motion dec |
+038 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
Tau Scl |
|
Constellation |
Sculptor |
|
SAO |
193201 |
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HIP |
7463 |
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Tycho2 |
6428-02436-1 |
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Gaia DR2 |
5022876291741784064 |
|
HD |
9906 |
|
HR |
462 |
|
GC |
1947 |
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CD |
CD-30 540 |
|
CP |
CP-30 186 |
|
Bayer |
Tau Sculptoris |
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Bayer name |
Tau Scl |
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Distance |
69.35 |
|
Distance ly |
226.22 |
|
Bayer greek |
τ Scl |
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ORBITAL ELEMENTS
Period (P) | 679.9164y | ± 280.5184 |
Periastron (T) | 2049.609y | ± 11.3345 |
Semi-major axis (a) | 2.73159a | ± 0.85307 |
Eccentricity (e) | 0.75614 | ± 0.17019 |
Inclination (i) | 67.832° | ± 9.489 |
Longitude of periastron (ω) | 220.95° | ± 28.609 |
Node (Ω) | 50.738° | ± 8.08 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
167.7 |
0.783 |
2001 |
169.3 |
0.782 |
2002 |
170.9 |
0.781 |
2003 |
172.5 |
0.781 |
2004 |
174.1 |
0.781 |
2005 |
175.7 |
0.781 |
2006 |
177.3 |
0.782 |
2007 |
178.9 |
0.783 |
2008 |
180.4 |
0.785 |
2009 |
182.0 |
0.786 |
2010 |
183.6 |
0.788 |
2011 |
185.2 |
0.791 |
2012 |
186.7 |
0.793 |
2013 |
188.3 |
0.796 |
2014 |
189.8 |
0.799 |
2015 |
191.3 |
0.802 |
2016 |
192.8 |
0.805 |
2017 |
194.3 |
0.808 |
2018 |
195.8 |
0.812 |
2019 |
197.3 |
0.815 |
2020 |
198.8 |
0.819 |
2021 |
200.2 |
0.822 |
2022 |
201.6 |
0.825 |
2023 |
203.1 |
0.828 |
2024 |
204.5 |
0.831 |
2025 |
205.9 |
0.834 |
2026 |
207.3 |
0.836 |
2027 |
208.7 |
0.838 |
2028 |
210.1 |
0.839 |
2029 |
211.5 |
0.840 |
2030 |
212.8 |
0.840 |
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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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