01361-2954 HJ 3447 (Tau Scl)

 
 
01h 36m 08.50s -29 54' 26.5" P.A. 198.80 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
Coord arcsec 2000
01 36 08.50 -29 54 26.5
Date first
1835
Date last
2019
Obs
119
Pa first
254
Pa last
198
P.A. Now (θ)
198.8°
Sep first
3.0
Sep last
0.8
Sep. Now (ρ)
0.82"
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)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
197.9
Precise sep
0.822
Name
Tau Scl
Constellation
Sculptor
SAO
193201
HIP
7463
Tycho2
6428-02436-1
Gaia DR2
91741784064
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
last precise pa
197.9
last precise sep
0.822
 
 
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 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 0.783 167.7
2001 0.782 169.3
2002 0.781 170.9
2003 0.781 172.5
2004 0.781 174.1
2005 0.781 175.7
2006 0.782 177.3
2007 0.783 178.9
2008 0.785 180.4
2009 0.786 182.0
2010 0.788 183.6
2011 0.791 185.2
2012 0.793 186.7
2013 0.796 188.3
2014 0.799 189.8
2015 0.802 191.3
2016 0.805 192.8
2017 0.808 194.3
2018 0.812 195.8
2019 0.815 197.3
2020 0.819 198.8
2021 0.822 200.2
2022 0.825 201.6
2023 0.828 203.1
2024 0.831 204.5
2025 0.834 205.9
2026 0.836 207.3
2027 0.838 208.7
2028 0.839 210.1
2029 0.840 211.5
2030 0.840 212.8

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






wds01361-2954c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01361-2954 HJ 3447 2007 99 180 0.8 5.97 7.35 F2V NOD 013608.50-295426.5
01361-2954 HJ 3447 2008 103 182 0.8 5.97 7.35 F2V NOD 013608.50-295426.5
01361-2954 HJ 3447 2010 105 185 0.8 5.97 7.35 F2V NOD 013608.50-295426.5
01361-2954 HJ 3447 2011 109 185 0.8 5.97 7.35 F2V NOD 013608.50-295426.5
01361-2954 HJ 3447 2015 113 191 0.8 5.97 7.35 F2V NO 013608.50-295426.5
01361-2954 HJ 3447 2016 116 195 0.8 5.97 7.35 F2V NO 013608.50-295426.5
01361-2954 HJ 3447 2018 118 197 0.8 5.97 7.35 F2V NO 013608.50-295426.5
01361-2954 HJ 3447 2019 119 198 0.8 5.97 7.35 F2V NO 013608.50-295426.5

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