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 Discov num MCA  76 Comp Coord arcsec 2000 23 57 45.55 +25 08 29.3
Date first 1980 Date last 1995 Obs 5
Pa first 54 Pa last 171.4 P.A. Now (θ) 171.4°
Sep first 0.2 Sep last 0.081 Sep. Now (ρ) 0.081"
Mag pri 4.66 Mag sec delta mag (ΔM) Spectral class M3III (red)
Pri motion ra -034 Sec motion ra
Pri motion dec -033 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Psi Peg Var name NSV14777 Peg Constellation Pegasus SAO 91611
HIP 118131 Tycho2 2255-02883-1 Gaia DR2 2851617392714583808 HD 224427
HR 9064 GC 33230 BD BD+24 4865 Bayer Psi Pegasi
Bayer name Psi Peg Flamsteed 84 Pegasi Flamsteed name 84 Peg FK5 1629
Distance 145.99 Distance ly 476.22 Bayer greek ψ Peg
 
 
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 Notesn ReferenceOle2004e
Equinox2000 Last observation1995 Grade5(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


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds23578%2B2508a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic