00318+5431 STT 12 (Lam Cas)
00h 31m 46.32s +54° 31' 20.3" P.A. 220.00 sep 0.1 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 |
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|
Coord arcsec 2000 |
00 31 46.32 +54 31 20.3 |
|
| Date first |
1845 |
|
Date last |
2019 |
|
Obs |
275 |
|
| Pa first |
122 |
|
Pa last |
219.7 |
|
P.A. Now (θ) |
294.2° |
|
| Sep first |
0.3 |
|
Sep last |
0.117 |
|
Sep. Now (ρ) |
0.087" |
|
| 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 |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Lam Cas |
|
Constellation |
Cassiopeia |
|
SAO |
21489 |
|
HIP |
2505 |
|
| Tycho2 |
3658-02414-1 |
|
Gaia DR2 |
418090121095577216 |
|
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 |
|
Bayer greek |
λ Cas |
|
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 |
Notes | n | |
Reference | Dru2014 | |
| Equinox | | |
Last observation | 2010 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
196.9 |
0.372 |
| 2001 |
197.9 |
0.362 |
| 2002 |
198.8 |
0.353 |
| 2003 |
199.9 |
0.343 |
| 2004 |
201.0 |
0.332 |
| 2005 |
202.2 |
0.322 |
| 2006 |
203.4 |
0.311 |
| 2007 |
204.8 |
0.299 |
| 2008 |
206.3 |
0.287 |
| 2009 |
207.9 |
0.274 |
| 2010 |
209.7 |
0.261 |
| 2011 |
211.6 |
0.248 |
| 2012 |
213.8 |
0.234 |
| 2013 |
216.2 |
0.220 |
| 2014 |
219.1 |
0.205 |
| 2015 |
222.3 |
0.189 |
| 2016 |
226.2 |
0.174 |
| 2017 |
230.8 |
0.158 |
| 2018 |
236.5 |
0.142 |
| 2019 |
243.5 |
0.126 |
| 2020 |
252.5 |
0.112 |
| 2021 |
263.9 |
0.100 |
| 2022 |
278.1 |
0.091 |
| 2023 |
294.2 |
0.087 |
| 2024 |
310.8 |
0.089 |
| 2025 |
325.9 |
0.096 |
| 2026 |
338.4 |
0.106 |
| 2027 |
348.5 |
0.118 |
| 2028 |
356.7 |
0.131 |
| 2029 |
3.4 |
0.143 |
| 2030 |
9.1 |
0.155 |
|
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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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