23176+1818 HU 400 (HD 219675)
23h 17m 37.32s +18° 18' 17.5" P.A. 70.00 sep 0.3 mag 7.01,8.80 Sp F0 dist. 134.05 pc (437.27 l.y.)
Coord 2000 |
23176+1818 |
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Discov num |
HU 400 |
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Comp |
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Coord arcsec 2000 |
23 17 37.32 +18 18 17.5 |
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Date first |
1901 |
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Date last |
2016 |
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Obs |
67 |
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Pa first |
249 |
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Pa last |
70.2 |
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P.A. Now (θ) |
63.6° |
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Sep first |
0.3 |
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Sep last |
0.344 |
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Sep. Now (ρ) |
0.373" |
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Mag pri |
7.01 |
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Mag sec |
8.80 |
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delta mag (ΔM) |
1.79 |
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Spectral class |
F0 (yellow-white) |
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Pri motion ra |
-063 |
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Sec motion ra |
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Pri motion dec |
-028 |
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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.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 219675 |
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Constellation |
Pegasus |
|
SAO |
108515 |
|
HIP |
115011 |
|
Tycho2 |
1716-01366-1 |
|
Gaia DR2 |
2818938292229499136 |
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HD |
219675 |
|
GC |
32423 |
|
ADS |
16650 |
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BD |
BD+17 4891 |
|
Distance |
134.05 |
|
Distance ly |
437.27 |
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ORBITAL ELEMENTS
Period (P) | 173.66y | |
Periastron (T) | 1881.16y | |
Semi-major axis (a) | 0.409a | |
Eccentricity (e) | 0.31 | |
Inclination (i) | 130.8° | |
Longitude of periastron (ω) | 76.3° | |
Node (Ω) | 46.2° | |
Notes | n | |
Reference | Sca2002d | |
Equinox | 2000 | |
Last observation | 2000 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
100.0 |
0.355 |
2001 |
98.3 |
0.357 |
2002 |
96.7 |
0.358 |
2003 |
95.0 |
0.360 |
2004 |
93.3 |
0.361 |
2005 |
91.7 |
0.362 |
2006 |
90.0 |
0.364 |
2007 |
88.4 |
0.365 |
2008 |
86.8 |
0.367 |
2009 |
85.2 |
0.368 |
2010 |
83.6 |
0.369 |
2011 |
82.1 |
0.370 |
2012 |
80.5 |
0.372 |
2013 |
78.9 |
0.372 |
2014 |
77.4 |
0.373 |
2015 |
75.8 |
0.374 |
2016 |
74.3 |
0.375 |
2017 |
72.8 |
0.375 |
2018 |
71.2 |
0.375 |
2019 |
69.7 |
0.375 |
2020 |
68.2 |
0.375 |
2021 |
66.6 |
0.375 |
2022 |
65.1 |
0.374 |
2023 |
63.6 |
0.373 |
2024 |
62.0 |
0.372 |
2025 |
60.5 |
0.371 |
2026 |
58.9 |
0.369 |
2027 |
57.3 |
0.367 |
2028 |
55.7 |
0.364 |
2029 |
54.0 |
0.362 |
2030 |
52.4 |
0.359 |
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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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