16365-6700 HDS 2347 (HD 148976)
16h 36m 32.05s -67° 00' 17.5" P.A. 118.00 sep 0.1 mag 7.25,9.83 Sp A1V dist. 138.89 pc (453.06 l.y.)
Coord 2000 |
16365-6700 |
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Discov num |
HDS2347 |
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Comp |
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Coord arcsec 2000 |
16 36 32.05 -67 00 17.5 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
5 |
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Pa first |
233 |
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Pa last |
118.1 |
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P.A. Now (θ) |
118.1° |
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Sep first |
0.2 |
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Sep last |
0.13 |
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Sep. Now (ρ) |
0.13" |
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Mag pri |
7.25 |
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Mag sec |
9.83 |
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delta mag (ΔM) |
2.58 |
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Spectral class |
A1V (white) |
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Pri motion ra |
-025 |
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Sec motion ra |
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Pri motion dec |
-024 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 148976 |
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Constellation |
Triangulum Australe |
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SAO |
253618 |
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HIP |
81320 |
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Tycho2 |
9050-01405-1 |
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Gaia DR2 |
5815560339285831168 |
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HD |
148976 |
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GC |
22277 |
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CP |
CP-66 2980 |
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Distance |
138.89 |
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Distance ly |
453.06 |
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ORBITAL ELEMENTS
Period (P) | 85y | |
Periastron (T) | 2026.41y | |
Semi-major axis (a) | 0.182a | |
Eccentricity (e) | 0.2 | |
Inclination (i) | 141.1° | |
Longitude of periastron (ω) | 84.2° | |
Node (Ω) | 162.3° | |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
201.9 |
0.179 |
2001 |
198.6 |
0.180 |
2002 |
195.3 |
0.180 |
2003 |
192.0 |
0.181 |
2004 |
188.7 |
0.181 |
2005 |
185.4 |
0.181 |
2006 |
182.1 |
0.180 |
2007 |
178.8 |
0.180 |
2008 |
175.5 |
0.179 |
2009 |
172.1 |
0.177 |
2010 |
168.7 |
0.175 |
2011 |
165.2 |
0.173 |
2012 |
161.6 |
0.171 |
2013 |
157.8 |
0.168 |
2014 |
153.9 |
0.164 |
2015 |
149.9 |
0.160 |
2016 |
145.6 |
0.156 |
2017 |
141.1 |
0.152 |
2018 |
136.3 |
0.147 |
2019 |
131.1 |
0.142 |
2020 |
125.6 |
0.137 |
2021 |
119.6 |
0.132 |
2022 |
113.2 |
0.127 |
2023 |
106.3 |
0.123 |
2024 |
99.0 |
0.119 |
2025 |
91.2 |
0.116 |
2026 |
83.1 |
0.114 |
2027 |
74.8 |
0.113 |
2028 |
66.5 |
0.114 |
2029 |
58.4 |
0.115 |
2030 |
50.5 |
0.118 |
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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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