16253-4909 CVN 27 Ba,Bb
16h 25m 17.79s -49° 08' 52.8" P.A. 115.00 sep 0.1 mag 8.23, Sp K1V dist. 46.99 pc (153.28 l.y.)
Coord 2000 |
16253-4909 |
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Discov num |
CVN 27 |
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Comp |
Ba,Bb |
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Coord arcsec 2000 |
16 25 17.79 -49 08 52.8 |
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Date first |
2004 |
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Date last |
2021 |
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Obs |
21 |
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Pa first |
38 |
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Pa last |
115.1 |
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P.A. Now (θ) |
53.8° |
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Sep first |
0.1 |
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Sep last |
0.063 |
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Sep. Now (ρ) |
0.09" |
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Mag pri |
8.23 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
K1V (yellow-orange) |
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Pri motion ra |
-092 |
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Sec motion ra |
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Pri motion dec |
-084 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
16253-4909 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 147633 |
|
16 25 18 -49 08 52 |
COO 197 AB |
2021 |
65 |
89 |
2.4 |
8.11 |
8.23 |
0.12 |
Y |
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Show |
|
|
16 25 18 -49 08 52 |
COO 197 AC |
2010 |
16 |
77 |
20.7 |
8.11 |
12.00 |
3.89 |
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Show |
|
226738 |
16 25 18 -49 08 53 |
CVN 27 Ba,Bb |
2021 |
21 |
115 |
0.1 |
8.23 |
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Y |
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Norma |
|
SAO |
226738 |
|
HIP |
80448 |
|
Tycho2 |
8320-02096-2 |
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Gaia DR2 |
5941405217505610624 |
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HD |
147633 |
|
CD |
CD-4810809 |
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CP |
CP-48 8449 |
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Distance |
46.99 |
|
Distance ly |
153.28 |
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ORBITAL ELEMENTS
Period (P) | 19.77y | ± 0.23 |
Periastron (T) | 2017.26y | ± 0.22 |
Semi-major axis (a) | 0.182a | ± 0.003 |
Eccentricity (e) | 0.47 | ± 0.018 |
Inclination (i) | 107.9° | ± 0.9 |
Longitude of periastron (ω) | 138.3° | ± 4.9 |
Node (Ω) | 3.8° | ± 1.1 |
Notes | n | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
157.3 |
0.091 |
2001 |
130.5 |
0.069 |
2002 |
90.6 |
0.064 |
2003 |
58.8 |
0.084 |
2004 |
41.6 |
0.114 |
2005 |
31.7 |
0.145 |
2006 |
25.3 |
0.174 |
2007 |
20.6 |
0.199 |
2008 |
16.9 |
0.219 |
2009 |
13.6 |
0.232 |
2010 |
10.7 |
0.238 |
2011 |
7.8 |
0.236 |
2012 |
4.7 |
0.224 |
2013 |
1.1 |
0.200 |
2014 |
356.1 |
0.163 |
2015 |
347.2 |
0.110 |
2016 |
314.3 |
0.046 |
2017 |
208.7 |
0.059 |
2018 |
184.3 |
0.104 |
2019 |
170.3 |
0.106 |
2020 |
152.4 |
0.085 |
2021 |
122.1 |
0.065 |
2022 |
81.8 |
0.067 |
2023 |
53.8 |
0.090 |
2024 |
38.8 |
0.121 |
2025 |
30.0 |
0.152 |
2026 |
24.1 |
0.181 |
2027 |
19.7 |
0.204 |
2028 |
16.1 |
0.222 |
2029 |
13.0 |
0.234 |
2030 |
10.0 |
0.238 |
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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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