23317+1956 WIR 1 AB (EQ Peg)
23h 31m 52.24s +19° 56' 14.0" P.A. 73.00 sep 5.3 mag 10.52,12.40 Sp M3.5V+M5V dist. 6.18 pc (20.16 l.y.)
Coord 2000 |
23317+1956 |
|
Discov num |
WIR 1 |
|
Comp |
AB |
|
Coord arcsec 2000 |
23 31 52.24 +19 56 14.0 |
|
Date first |
1941 |
|
Date last |
2020 |
|
Obs |
75 |
|
Pa first |
183 |
|
Pa last |
73.2 |
|
P.A. Now (θ) |
73.2° |
|
Sep first |
3.5 |
|
Sep last |
5.286 |
|
Sep. Now (ρ) |
5.286" |
|
Mag pri |
10.52 |
|
Mag sec |
12.40 |
|
delta mag (ΔM) |
1.88 |
|
Spectral class |
M3.5V+M5V (red/red) |
|
Pri motion ra |
+554 |
|
Sec motion ra |
-078 |
|
Pri motion dec |
-063 |
|
Sec motion dec |
+108 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=1.174
This double is physical.
23317+1956 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
EQ Peg |
|
23 31 52 +19 56 14 |
WIR 1 AB |
2020 |
75 |
73 |
5.3 |
10.52 |
12.40 |
1.88 |
Y |
<=== |
Show |
|
|
23 31 52 +19 56 14 |
LMP 24 AC |
2020 |
15 |
13 |
30.2 |
10.52 |
12.33 |
1.81 |
|
|
Show |
|
|
23 31 52 +19 56 14 |
LMP 24 AD |
2020 |
13 |
337 |
38.1 |
10.52 |
13.62 |
3.10 |
|
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Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
EQ Peg |
|
Constellation |
Pegasus |
|
HIP |
116132 |
|
Tycho2 |
1723-00023-1 |
|
GL |
Gl 896A |
|
BD |
BD+19 5116 |
|
Distance |
6.18 |
|
Distance ly |
20.16 |
|
ORBITAL ELEMENTS
Period (P) | 182.791255y | |
Periastron (T) | 1887.66538y | |
Semi-major axis (a) | 4.7276a | |
Eccentricity (e) | 0.299996 | |
Inclination (i) | 127.6685° | |
Longitude of periastron (ω) | 119.7912° | |
Node (Ω) | 67.9962° | |
Notes | n | |
Reference | Kpp2020f | |
Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
92.2 |
5.235 |
2001 |
91.3 |
5.258 |
2002 |
90.4 |
5.279 |
2003 |
89.4 |
5.298 |
2004 |
88.5 |
5.315 |
2005 |
87.6 |
5.331 |
2006 |
86.7 |
5.344 |
2007 |
85.8 |
5.355 |
2008 |
84.9 |
5.363 |
2009 |
84.0 |
5.370 |
2010 |
83.2 |
5.374 |
2011 |
82.3 |
5.376 |
2012 |
81.4 |
5.375 |
2013 |
80.5 |
5.372 |
2014 |
79.6 |
5.366 |
2015 |
78.7 |
5.358 |
2016 |
77.8 |
5.347 |
2017 |
76.9 |
5.333 |
2018 |
76.0 |
5.317 |
2019 |
75.1 |
5.297 |
2020 |
74.2 |
5.275 |
2021 |
73.3 |
5.249 |
2022 |
72.3 |
5.221 |
2023 |
71.4 |
5.189 |
2024 |
70.4 |
5.155 |
2025 |
69.4 |
5.117 |
2026 |
68.5 |
5.076 |
2027 |
67.4 |
5.031 |
2028 |
66.4 |
4.983 |
2029 |
65.4 |
4.932 |
2030 |
64.3 |
4.877 |
|
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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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