23578+2508 MCA 76 (Psi Peg)
23h 57m 45.55s +25° 08' 29.3" P.A. 171.00 sep 0.1 mag 4.66, Sp M3III dist. 145.99 pc (476.22 l.y.)
Coord 2000 |
23578+2508 |
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Discov num |
MCA 76 |
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Comp |
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Coord arcsec 2000 |
23 57 45.55 +25 08 29.3 |
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Date first |
1980 |
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Date last |
1995 |
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Obs |
5 |
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Pa first |
54 |
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Pa last |
171.4 |
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P.A. Now (θ) |
171.4° |
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Sep first |
0.2 |
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Sep last |
0.081 |
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Sep. Now (ρ) |
0.081" |
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Mag pri |
4.66 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
M3III (red) |
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Pri motion ra |
-034 |
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Sec motion ra |
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Pri motion dec |
-033 |
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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 |
Psi Peg |
|
Var name |
NSV14777 Peg |
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Constellation |
Pegasus |
|
SAO |
91611 |
|
HIP |
118131 |
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Tycho2 |
2255-02883-1 |
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Gaia DR2 |
2851617392714583808 |
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HD |
224427 |
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HR |
9064 |
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GC |
33230 |
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BD |
BD+24 4865 |
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Bayer |
Psi Pegasi |
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Bayer name |
Psi Peg |
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Flamsteed |
84 Pegasi |
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Flamsteed name |
84 Peg |
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FK5 |
1629 |
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Distance |
145.99 |
|
Distance ly |
476.22 |
|
Bayer greek |
ψ Peg |
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ORBITAL ELEMENTS
Period (P) | 55.06y | ± 11.31 |
Periastron (T) | 2001.83y | ± 8.81 |
Semi-major axis (a) | 0.17a | ± 0.016 |
Eccentricity (e) | 0.1 | ± 0.1 |
Inclination (i) | 65.6° | ± 2.2 |
Longitude of periastron (ω) | 159.7° | ± 11.9 |
Node (Ω) | 46.6° | ± 2.3 |
Notes | n | |
Reference | Ole2004e | |
Equinox | 2000 | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
210.5 |
0.131 |
2001 |
214.7 |
0.139 |
2002 |
218.5 |
0.146 |
2003 |
222.0 |
0.151 |
2004 |
225.4 |
0.153 |
2005 |
228.7 |
0.154 |
2006 |
232.0 |
0.152 |
2007 |
235.4 |
0.148 |
2008 |
239.1 |
0.142 |
2009 |
243.1 |
0.135 |
2010 |
247.7 |
0.126 |
2011 |
253.0 |
0.116 |
2012 |
259.2 |
0.106 |
2013 |
266.9 |
0.096 |
2014 |
276.4 |
0.086 |
2015 |
287.9 |
0.078 |
2016 |
301.5 |
0.073 |
2017 |
316.4 |
0.072 |
2018 |
330.9 |
0.075 |
2019 |
343.9 |
0.081 |
2020 |
354.7 |
0.090 |
2021 |
3.4 |
0.100 |
2022 |
10.4 |
0.111 |
2023 |
16.1 |
0.122 |
2024 |
20.9 |
0.133 |
2025 |
24.9 |
0.144 |
2026 |
28.5 |
0.153 |
2027 |
31.6 |
0.162 |
2028 |
34.4 |
0.169 |
2029 |
37.0 |
0.176 |
2030 |
39.5 |
0.180 |
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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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