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 |
|
Discov num |
HJ 3447 |
|
Comp |
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Coord arcsec 2000 |
01 36 08.50 -29 54 26.5 |
|
| Date first |
1835 |
|
Date last |
2021 |
|
Obs |
122 |
|
| Pa first |
254 |
|
Pa last |
200.5 |
|
P.A. Now (θ) |
200.5° |
|
| Sep first |
3.0 |
|
Sep last |
0.832 |
|
Sep. Now (ρ) |
0.832" |
|
| Mag pri |
5.97 |
|
Mag sec |
7.35 |
|
delta mag (ΔM) |
1.38 |
|
Spectral class |
F2V (yellow-white) |
|
| Pri motion ra |
+105 |
|
Sec motion ra |
+105 |
|
| Pri motion dec |
+038 |
|
Sec motion dec |
+038 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Tau Scl |
|
Constellation |
Sculptor |
|
SAO |
193201 |
|
HIP |
7463 |
|
| Tycho2 |
6428-02436-1 |
|
Gaia DR2 |
5022876291741784064 |
|
HD |
9906 |
|
HR |
462 |
|
| GC |
1947 |
|
CD |
CD-30 540 |
|
CP |
CP-30 186 |
|
Bayer |
Tau Sculptoris |
|
| Bayer name |
Tau Scl |
|
Distance |
69.35 |
|
Distance ly |
226.22 |
|
Bayer greek |
τ Scl |
|
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 |
| 2031 |
214.2 |
0.839 |
| 2032 |
215.6 |
0.838 |
| 2033 |
217.0 |
0.835 |
| 2034 |
218.4 |
0.832 |
| 2035 |
219.8 |
0.827 |
| 2036 |
221.3 |
0.821 |
| 2037 |
222.7 |
0.813 |
| 2038 |
224.2 |
0.803 |
| 2039 |
225.8 |
0.792 |
| 2040 |
227.3 |
0.778 |
| 2041 |
229.0 |
0.763 |
| 2042 |
230.7 |
0.745 |
| 2043 |
232.5 |
0.725 |
| 2044 |
234.4 |
0.702 |
| 2045 |
236.5 |
0.677 |
| 2046 |
238.7 |
0.649 |
| 2047 |
241.1 |
0.618 |
| 2048 |
243.8 |
0.586 |
| 2049 |
246.8 |
0.551 |
| 2050 |
250.3 |
0.515 |
|
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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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