22280+5742 KR 60 AB (DO Cep)

 
 
22h 27m 59.20s +57° 41' 43.8" P.A. 207.00 sep 2.1 mag 9.93,11.41 Sp M3.5+M4.5 dist. 4 pc (13.05 l.y.)
 
 
Coord 2000 22280+5742 Discov num KR   60 Comp AB Coord arcsec 2000 22 27 59.20 +57 41 43.8
Date first 1890 Date last 2020 Obs 317
Pa first 179 Pa last 206.5 P.A. Now (θ) 188.7°
Sep first 2.3 Sep last 2.052 Sep. Now (ρ) 2.364"
Mag pri 9.93 Mag sec 11.41 delta mag (ΔM) 1.48 Spectral class M3.5+M4.5 (red/red)
Pri motion ra -806 Sec motion ra -713
Pri motion dec -399 Sec motion dec -321
Notes N O (See Notes, Orbital solution)
rPM=0.135 (< 0.3, Physical double)
This double is physical.
 
 
22280+5742 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show DO Cep 22 27 59 +57 41 44 KR 60 AB 2020 317 207 2.1 9.93 11.41 1.48 Y <===
Show 22 27 59 +57 41 44 KR 60 AC 2016 83 62 139.8 9.93 10.53 0.60
Show 22 27 59 +57 41 44 KR 60 AD 2016 10 56 119.3 9.93 14.30 4.37
Show 22 27 59 +57 41 44 KR 60 AE 2016 17 77 163.0 9.93 13.33 3.40
Show 22 27 59 +57 41 44 KR 60 AF 2016 16 46 71.9 9.93 14.43 4.50
Show 22 27 59 +57 41 44 KR 60 AG 2016 6 114 68.4 9.93 15.14 5.21
Show 22 27 59 +57 41 44 KR 60 AH 2016 8 267 50.2 9.93 13.02 3.09
Show 22 27 59 +57 41 44 KR 60 AI 2016 18 119 238.2 9.93 8.31 1.62
Show 22 27 59 +57 41 44 HEL 4 AJ 2016 10 113 32.5 9.93 15.70 5.77
Show 22 27 59 +57 41 44 HZE 5 AK 2006 1 0 7.2 4.78 16.00 11.22
Show 22 27 59 +57 41 44 FYM 118 AL 2016 5 13 107.0 9.93 15.44 5.51
Show 22 27 59 +57 41 44 FYM 118 AM 2016 5 356 78.4 9.93 15.60 5.67
Show 22 27 59 +57 41 44 FYM 118 AO 2016 5 135 83.0 9.93 15.17 5.24
Show 22 27 59 +57 41 44 FYM 118 AR 2016 5 113 113.7 9.93 15.20 5.27
Show 22 27 59 +57 41 44 FYM 118 AS 2016 5 264 13.2 9.93 15.70 5.77
Show 22 27 59 +57 41 44 FYM 118 AU 2016 5 103 137.6 9.93 15.20 5.27
Show 22 27 60 +57 41 44 KR 60 BC 2016 60 62 141.2 11.41 10.53 0.88
Show 22 27 60 +57 41 44 HEL 4 BJ 2016 7 112 33.9 11.41 15.70 4.29
Show 22 28 13 +57 42 44 FYM 118 CD 2016 8 272 24.5 10.53 14.30 3.77
Show 22 28 13 +57 42 44 KR 60 CE 2016 19 130 45.9 10.53 13.33 2.80 Y
Show 22 28 13 +57 42 44 FYM 118 CN 2016 9 52 42.1 10.53 14.92 4.39
Show 22 28 13 +57 42 44 FYM 118 CP 2016 9 320 46.5 10.53 14.79 4.26
Show 22 28 18 +57 42 15 FYM 118 EQ 2016 9 206 14.2 13.33 15.70 2.37
20-fold system
20 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DO Cep Constellation Cepheus HIP 110893 Tycho2 3991-00092-1
HD 239960 ADS 15972 GL Gl 860A BD BD+56 2783
Distance 4 Distance ly 13.05
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.5814y± 0.0345 Periastron (T)1970.2342y± 0.0389 Semi-major axis (a)2.40113a± 0.01042
Eccentricity (e)0.40847± 0.00223 Inclination (i)165.701°± 1.277 Longitude of periastron (ω)207.481°± 5.577
Node (Ω)150.665°± 5.42 Notesn ReferenceIzm2019
Equinox Last observation2013 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 94.6 3.039
2001 90.0 2.954
2002 85.2 2.861
2003 79.9 2.758
2004 74.3 2.647
2005 68.2 2.528
2006 61.4 2.402
2007 53.8 2.269
2008 45.3 2.132
2009 35.6 1.994
2010 24.5 1.856
2011 11.6 1.725
2012 356.7 1.605
2013 339.6 1.506
2014 320.5 1.437
2015 300.1 1.409
2016 279.6 1.431
2017 260.3 1.500
2018 243.2 1.611
2019 228.5 1.748
2020 216.1 1.900
2021 205.6 2.057
2022 196.5 2.213
2023 188.7 2.364
2024 181.7 2.505
2025 175.5 2.638
2026 169.8 2.759
2027 164.6 2.869
2028 159.8 2.968
2029 155.3 3.056
2030 151.0 3.132


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



 
 


wds22280%2B5742d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic