00121+5337 BU 1026 AB (HD 761)
00h 12m 08.05s +53° 37' 26.1" P.A. 324.00 sep 0.3 mag 7.25,8.46 Sp A7Vn+F2V dist. 119.9 pc (391.11 l.y.)
| Coord 2000 |
00121+5337 |
|
Discov num |
BU 1026 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 12 08.05 +53 37 26.1 |
|
| Date first |
1888 |
|
Date last |
2021 |
|
Obs |
137 |
|
| Pa first |
330 |
|
Pa last |
324.4 |
|
P.A. Now (θ) |
332.4° (calc) |
|
| Sep first |
0.5 |
|
Sep last |
0.317 |
|
Sep. Now (ρ) |
0.334" (calc) |
|
| Mag pri |
7.25 |
|
Mag sec |
8.46 |
|
delta mag (ΔM) |
1.21 |
|
Spectral class |
A7Vn+F2V (white/yellow-white) |
|
| Pri motion ra |
+039 |
|
Sec motion ra |
|
|
| Pri motion dec |
-012 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00121+5337 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 761 |
21202 |
00 12 08 +53 37 26 |
BU 1026 AB |
2021 |
137 |
324 |
0.3 |
7.25 |
8.46 |
1.21 |
Y |
<=== |
| Show |
|
21202 |
00 12 08 +53 37 26 |
CHR 1 AC |
2001 |
8 |
298 |
0.3 |
7.25 |
|
|
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 761 |
|
Constellation |
Cassiopeia |
|
SAO |
21202 |
|
HIP |
981 |
|
| Tycho2 |
3652-01234-1 |
|
Gaia DR2 |
420017603641437824 |
|
HD |
761 |
|
GC |
208 |
|
| ADS |
148 |
|
BD |
BD+52 19 |
|
Distance |
119.9 |
|
Distance ly |
391.11 |
|
ORBITAL ELEMENTS
| Period (P) | 66.84y | ± 0.17 |
Periastron (T) | 1986.542y | ± 0.029 |
Semi-major axis (a) | 0.2514a | ± 0.0055 |
| Eccentricity (e) | 0.8282 | ± 0.0058 |
Inclination (i) | 42.77° | ± 0.84 |
Longitude of periastron (ω) | 255.2° | ± 1.1 |
| Node (Ω) | 254.9° | ± 1.2 |
Notes | n | |
Reference | Hrt1996a | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
299.4 |
0.286 |
| 2001 |
301.1 |
0.294 |
| 2002 |
302.7 |
0.301 |
| 2003 |
304.2 |
0.308 |
| 2004 |
305.6 |
0.314 |
| 2005 |
307.0 |
0.319 |
| 2006 |
308.4 |
0.324 |
| 2007 |
309.7 |
0.329 |
| 2008 |
311.0 |
0.333 |
| 2009 |
312.2 |
0.336 |
| 2010 |
313.5 |
0.339 |
| 2011 |
314.7 |
0.342 |
| 2012 |
315.9 |
0.344 |
| 2013 |
317.0 |
0.345 |
| 2014 |
318.2 |
0.347 |
| 2015 |
319.4 |
0.348 |
| 2016 |
320.5 |
0.348 |
| 2017 |
321.7 |
0.348 |
| 2018 |
322.8 |
0.348 |
| 2019 |
324.0 |
0.348 |
| 2020 |
325.1 |
0.347 |
| 2021 |
326.3 |
0.345 |
| 2022 |
327.5 |
0.344 |
| 2023 |
328.7 |
0.342 |
| 2024 |
329.9 |
0.339 |
| 2025 |
331.1 |
0.337 |
| 2026 |
332.4 |
0.334 |
| 2027 |
333.6 |
0.330 |
| 2028 |
334.9 |
0.326 |
| 2029 |
336.3 |
0.322 |
| 2030 |
337.6 |
0.318 |
| 2031 |
339.0 |
0.313 |
| 2032 |
340.5 |
0.308 |
| 2033 |
342.0 |
0.302 |
| 2034 |
343.6 |
0.296 |
| 2035 |
345.2 |
0.290 |
| 2036 |
346.9 |
0.283 |
| 2037 |
348.7 |
0.276 |
| 2038 |
350.6 |
0.268 |
| 2039 |
352.6 |
0.260 |
| 2040 |
354.8 |
0.251 |
| 2041 |
357.1 |
0.242 |
| 2042 |
359.6 |
0.232 |
| 2043 |
2.3 |
0.222 |
| 2044 |
5.3 |
0.211 |
| 2045 |
8.6 |
0.199 |
| 2046 |
12.4 |
0.186 |
| 2047 |
16.7 |
0.173 |
| 2048 |
21.9 |
0.158 |
| 2049 |
28.1 |
0.142 |
| 2050 |
36.0 |
0.124 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
