02537+3820 BU 524 AB

02h 53m 42.58s +38° 20' 15.6" P.A. 319.00 sep 0.2 mag 5.79,6.80 Sp F4IV dist. 70.67 pc (230.53 l.y.)

Coord 2000 02537+3820 Discov num BU  524 Comp AB Coord arcsec 2000 02 53 42.58 +38 20 15.6
Date first 1878 Date last 2009 Obs 223
Pa first 6 Pa last 318.8 P.A. Now (θ) 248°
Sep first 0.3 Sep last 0.225 Sep. Now (ρ) 0.169"
Mag pri 5.79 Mag sec 6.80 delta mag (ΔM) 1.01 Spectral class F4IV (yellow-white)
Pri motion ra +050 Sec motion ra
Pri motion dec -078 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



02537+3820 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 55975 02 53 43 +38 20 16 BU 524 AB 2009 223 319 0.2 5.79 6.80 1.01 Y <===
Show 20 Per 55975 02 53 43 +38 20 16 STF 318 AB,C 2016 43 237 13.9 5.39 9.68 4.29
Show 55975 02 53 43 +38 20 16 STF 318 AB,D 2002 6 40 58.1 5.39 12.60 7.21


Quadruple system
5 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Var name NSV977 Per Constellation Perseus SAO 55975 HIP 13490
Tycho2 2846-01428-1 Gaia DR2 143119137916819456 HD 17904 HR 855
GC 3459 ADS 2200 BD BD+37 655 Flamsteed 20 Persei
Flamsteed name 20 Per Distance 70.67 Distance ly 230.53




ORBITAL ELEMENTS

Period (P)11553.9d (31.63y)± 8.7 Periastron (T)50255m (1996.471y)± 12 Semi-major axis (a)0.2224a± 0.0011
Eccentricity (e)0.756± 0.0023 Inclination (i)120.48°± 0.2 Longitude of periastron (ω)265.54°± 0.11
Node (Ω)26.62°± 0.24 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade2(1=Definitive, 9=Indet.)

label theta rho
2000 3.6 0.169
2001 357.5 0.182
2002 352.2 0.191
2003 347.3 0.198
2004 342.6 0.202
2005 338.0 0.204
2006 333.6 0.206
2007 329.2 0.206
2008 324.8 0.206
2009 320.3 0.205
2010 315.9 0.204
2011 311.3 0.202
2012 306.7 0.200
2013 302.0 0.198
2014 297.2 0.196
2015 292.3 0.194
2016 287.3 0.192
2017 282.2 0.190
2018 277.0 0.188
2019 271.6 0.185
2020 266.1 0.182
2021 260.4 0.179
2022 254.4 0.174
2023 248.0 0.169
2024 241.1 0.160
2025 233.3 0.148
2026 223.7 0.129
2027 209.0 0.095
2028 148.4 0.031
2029 33.7 0.083
2030 17.1 0.130


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



 
 


wds02537%2B3820a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic