00318+5431 STT  12 (Lam Cas)

 
 
00h 31m 46.32s +54 31' 20.3" P.A. 236.5 sep 0.14 mag 5.33,5.62 Sp B8V+B9V dist. 115.74 pc (377.54 l.y.)
 
 
Coord 2000
00318+5431
Discov num
STT  12
Comp
Coord arcsec 2000
00 31 46.32 +54 31 20.3
Date first
1845
Date last
2010
Obs
272
Pa first
122
Pa last
210
P.A. Now (θ)
236.5°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.14"
Mag pri
5.33
Mag sec
5.62
delta mag (ΔM)
0.29
Spectral class
B8V+B9V (blue-white/blue-white)
Pri motion ra
+041
Sec motion ra
Pri motion dec
-015
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
209.8
Precise sep
0.233
Name
Lam Cas
Constellation
Cassiopeia
SAO
21489
HIP
2505
Tycho2
3658-02414-1
HD
2772
HR
123
GC
618
ADS
434
BD
BD+53 82
Bayer
Lambda Cassiopeiae
Bayer name
Lam Cas
Flamsteed
14 Cassiopeiae
Flamsteed name
14 Cas
Distance
115.74
Distance ly
377.54
last precise pa
209.8
last precise sep
0.233
 
 
ORBITAL ELEMENTS
 
 
Period (P)245.7y± 35.96 Periastron (T)2025.54y± 4.65 Semi-major axis (a)0.448a± 0.028
Eccentricity (e)0.689± 0.119 Inclination (i)53.6°± 5.2 Longitude of periastron (ω)301°± 2.6
Node (Ω)17.6°± 9.6 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2010
label rho theta
2000 0.372 196.9
2001 0.362 197.9
2002 0.353 198.8
2003 0.343 199.9
2004 0.332 201.0
2005 0.322 202.2
2006 0.311 203.4
2007 0.299 204.8
2008 0.287 206.3
2009 0.274 207.9
2010 0.261 209.7
2011 0.248 211.6
2012 0.234 213.8
2013 0.220 216.2
2014 0.205 219.1
2015 0.189 222.3
2016 0.174 226.2
2017 0.158 230.8
2018 0.142 236.5
2019 0.126 243.5
2020 0.112 252.5
2021 0.100 263.9
2022 0.091 278.1
2023 0.087 294.2
2024 0.089 310.8
2025 0.096 325.9
2026 0.106 338.4
2027 0.118 348.5
2028 0.131 356.7
2029 0.143 3.4
2030 0.155 9.1

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

grafico orbita





wds00318%2B5431a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00318+5431 STT 12 2007 281 203 0.3 5.33 5.62 B8V+B9V NOD 003146.32+543120.3
00318+5431 STT 12 2008 284 208 0.3 5.33 5.62 B8V+B9V NOD 003146.32+543120.3
00318+5431 STT 12 2010 293 210 0.2 5.33 5.62 B8V B9V NO 003146.32+543120.3

If you need more information about this double, apply for a data request form to the WDS.