23241+5732 STT 495 (HD 220562)
23h 24m 07.91s +57° 32' 07.9" P.A. 121.00 sep 0.4 mag 7.49,7.76 Sp B2V dist. 299.4 pc (976.64 l.y.)
| Coord 2000 |
23241+5732 |
|
Discov num |
STT 495 |
|
Comp |
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Coord arcsec 2000 |
23 24 07.91 +57 32 07.9 |
|
| Date first |
1843 |
|
Date last |
2017 |
|
Obs |
67 |
|
| Pa first |
123 |
|
Pa last |
121.4 |
|
P.A. Now (θ) |
121.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.401 |
|
Sep. Now (ρ) |
0.401" |
|
| Mag pri |
7.49 |
|
Mag sec |
7.76 |
|
delta mag (ΔM) |
0.27 |
|
Spectral class |
B2V (blue-white) |
|
| Pri motion ra |
+008 |
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Sec motion ra |
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| Pri motion dec |
-002 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 220562 |
|
Constellation |
Cassiopeia |
|
SAO |
35386 |
|
HIP |
115529 |
|
| Tycho2 |
4007-00494-1 |
|
HD |
220562 |
|
GC |
32571 |
|
ADS |
16731 |
|
| BD |
BD+56 2999 |
|
Distance |
299.4 |
|
Distance ly |
976.64 |
|
ORBITAL ELEMENTS
| Period (P) | 300y | |
Periastron (T) | 1935.2y | |
Semi-major axis (a) | 0.296a | |
| Eccentricity (e) | 0.98 | |
Inclination (i) | 71° | |
Longitude of periastron (ω) | 142.4° | |
| Node (Ω) | 138.6° | |
Notes | | |
Reference | Alz2006 | |
| Equinox | 2000 | |
Last observation | 2005 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
121.3 |
0.348 |
| 2001 |
121.4 |
0.351 |
| 2002 |
121.4 |
0.353 |
| 2003 |
121.5 |
0.356 |
| 2004 |
121.5 |
0.359 |
| 2005 |
121.6 |
0.362 |
| 2006 |
121.6 |
0.364 |
| 2007 |
121.7 |
0.367 |
| 2008 |
121.7 |
0.370 |
| 2009 |
121.8 |
0.372 |
| 2010 |
121.8 |
0.375 |
| 2011 |
121.9 |
0.377 |
| 2012 |
121.9 |
0.380 |
| 2013 |
122.0 |
0.382 |
| 2014 |
122.0 |
0.385 |
| 2015 |
122.1 |
0.387 |
| 2016 |
122.1 |
0.389 |
| 2017 |
122.2 |
0.392 |
| 2018 |
122.2 |
0.394 |
| 2019 |
122.3 |
0.396 |
| 2020 |
122.3 |
0.399 |
| 2021 |
122.3 |
0.401 |
| 2022 |
122.4 |
0.403 |
| 2023 |
122.4 |
0.405 |
| 2024 |
122.5 |
0.407 |
| 2025 |
122.5 |
0.409 |
| 2026 |
122.5 |
0.411 |
| 2027 |
122.6 |
0.413 |
| 2028 |
122.6 |
0.415 |
| 2029 |
122.7 |
0.417 |
| 2030 |
122.7 |
0.419 |
|
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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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