02537+3820 BU 524 AB
02h 53m 42.58s +38° 20' 15.6" P.A. 290.00 sep 0.2 mag 5.79,6.80 Sp F4IV dist. 70.67 pc (230.53 l.y.)
| Coord 2000 |
02537+3820 |
|
Discov num |
BU 524 |
|
Comp |
AB |
|
Coord arcsec 2000 |
02 53 42.58 +38 20 15.6 |
|
| Date first |
1878 |
|
Date last |
2015 |
|
Obs |
225 |
|
| Pa first |
6 |
|
Pa last |
290.2 |
|
P.A. Now (θ) |
233.3° |
|
| Sep first |
0.3 |
|
Sep last |
0.225 |
|
Sep. Now (ρ) |
0.148" |
|
| Mag pri |
5.79 |
|
Mag sec |
6.80 |
|
delta mag (ΔM) |
1.01 |
|
Spectral class |
F4IV (yellow-white) |
|
| Pri motion ra |
+050 |
|
Sec motion ra |
|
|
| Pri motion dec |
-078 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
02537+3820 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
55975 |
02 53 43 +38 20 16 |
BU 524 AB |
2015 |
225 |
290 |
0.2 |
5.79 |
6.80 |
1.01 |
Y |
<=== |
| Show |
20 Per |
55975 |
02 53 43 +38 20 16 |
STF 318 AB,C |
2021 |
44 |
237 |
13.9 |
5.39 |
9.68 |
4.29 |
|
|
| Show |
|
55975 |
02 53 43 +38 20 16 |
STF 318 AB,D |
2002 |
6 |
40 |
58.1 |
5.39 |
12.60 |
7.21 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV977 Per |
|
Constellation |
Perseus |
|
SAO |
55975 |
|
HIP |
13490 |
|
| Tycho2 |
2846-01428-1 |
|
Gaia DR2 |
143119137916819456 |
|
HD |
17904 |
|
HR |
855 |
|
| GC |
3459 |
|
ADS |
2200 |
|
BD |
BD+37 655 |
|
Flamsteed |
20 Persei |
|
| Flamsteed name |
20 Per |
|
Distance |
70.67 |
|
Distance ly |
230.53 |
|
ORBITAL ELEMENTS
| Period (P) | 11553.9d (31.63y) | ± 8.7 |
Periastron (T) | 50255m (1996.471y) | ± 12 |
Semi-major axis (a) | 0.2224a | ± 0.0011 |
| Eccentricity (e) | 0.756 | ± 0.0023 |
Inclination (i) | 120.48° | ± 0.2 |
Longitude of periastron (ω) | 265.54° | ± 0.11 |
| Node (Ω) | 26.62° | ± 0.24 |
Notes | n | |
Reference | Mut2010b | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
3.6 |
0.169 |
| 2001 |
357.5 |
0.182 |
| 2002 |
352.2 |
0.191 |
| 2003 |
347.3 |
0.198 |
| 2004 |
342.6 |
0.202 |
| 2005 |
338.0 |
0.204 |
| 2006 |
333.6 |
0.206 |
| 2007 |
329.2 |
0.206 |
| 2008 |
324.8 |
0.206 |
| 2009 |
320.3 |
0.205 |
| 2010 |
315.9 |
0.204 |
| 2011 |
311.3 |
0.202 |
| 2012 |
306.7 |
0.200 |
| 2013 |
302.0 |
0.198 |
| 2014 |
297.2 |
0.196 |
| 2015 |
292.3 |
0.194 |
| 2016 |
287.3 |
0.192 |
| 2017 |
282.2 |
0.190 |
| 2018 |
277.0 |
0.188 |
| 2019 |
271.6 |
0.185 |
| 2020 |
266.1 |
0.182 |
| 2021 |
260.4 |
0.179 |
| 2022 |
254.4 |
0.174 |
| 2023 |
248.0 |
0.169 |
| 2024 |
241.1 |
0.160 |
| 2025 |
233.3 |
0.148 |
| 2026 |
223.7 |
0.129 |
| 2027 |
209.0 |
0.095 |
| 2028 |
148.4 |
0.031 |
| 2029 |
33.7 |
0.083 |
| 2030 |
17.1 |
0.130 |
| 2031 |
8.1 |
0.157 |
| 2032 |
1.3 |
0.174 |
| 2033 |
355.5 |
0.186 |
| 2034 |
350.3 |
0.194 |
| 2035 |
345.5 |
0.199 |
| 2036 |
340.9 |
0.203 |
| 2037 |
336.4 |
0.205 |
| 2038 |
332.0 |
0.206 |
| 2039 |
327.6 |
0.206 |
| 2040 |
323.2 |
0.205 |
| 2041 |
318.7 |
0.204 |
| 2042 |
314.2 |
0.203 |
| 2043 |
309.6 |
0.201 |
| 2044 |
305.0 |
0.200 |
| 2045 |
300.3 |
0.198 |
| 2046 |
295.4 |
0.196 |
| 2047 |
290.5 |
0.194 |
| 2048 |
285.5 |
0.192 |
| 2049 |
280.3 |
0.189 |
| 2050 |
275.0 |
0.187 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
