04246+3358 STT 81 AB (56 Per)
04h 24m 37.46s +33° 57' 34.9" P.A. 13.00 sep 4.2 mag 5.84,9.25 Sp F4V dist. 40.62 pc (132.5 l.y.)
Coord 2000 |
04246+3358 |
|
Discov num |
STT 81 |
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Comp |
AB |
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Coord arcsec 2000 |
04 24 37.46 +33 57 34.9 |
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Date first |
1847 |
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Date last |
2017 |
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Obs |
95 |
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Pa first |
48 |
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Pa last |
12.5 |
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P.A. Now (θ) |
12.5° |
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Sep first |
4.3 |
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Sep last |
4.17 |
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Sep. Now (ρ) |
4.17" |
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Mag pri |
5.84 |
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Mag sec |
9.25 |
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delta mag (ΔM) |
3.41 |
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Spectral class |
F4V (yellow-white) |
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Pri motion ra |
+055 |
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Sec motion ra |
+055 |
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Pri motion dec |
-083 |
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Sec motion dec |
-083 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
04246+3358 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
57216 |
04 24 37 +33 57 35 |
BAS 4 Aa,Ab |
1999 |
1 |
306 |
0.4 |
5.84 |
15.00 |
9.16 |
|
|
Show |
56 Per |
57216 |
04 24 37 +33 57 35 |
STT 81 AB |
2017 |
95 |
13 |
4.2 |
5.84 |
9.25 |
3.41 |
Y |
<=== |
Show |
|
|
04 24 38 +33 57 39 |
BAS 4 Ba,Bb |
2002 |
3 |
292 |
0.6 |
9.60 |
11.30 |
1.70 |
|
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Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
56 Per |
|
Var name |
NSV1592 Per |
|
Constellation |
Perseus |
|
SAO |
57216 |
|
HIP |
20591 |
|
Tycho2 |
2380-02429-1 |
|
Gaia DR2 |
172817599818083712 |
|
HD |
27786 |
|
HR |
1379 |
|
GC |
5335 |
|
ADS |
3188 |
|
BD |
BD+33 854 |
|
Flamsteed |
56 Persei |
|
Flamsteed name |
56 Per |
|
Distance |
40.62 |
|
Distance ly |
132.5 |
|
ORBITAL ELEMENTS
Period (P) | 1885.9592y | ± 944.0385 |
Periastron (T) | 1743.5713y | ± 138.3472 |
Semi-major axis (a) | 16.46579a | ± 10.41513 |
Eccentricity (e) | 0.88101 | ± 0.10793 |
Inclination (i) | 100.726° | ± 11.069 |
Longitude of periastron (ω) | 286.697° | ± 24.456 |
Node (Ω) | 70.746° | ± 23.729 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
16.5 |
4.247 |
2001 |
16.2 |
4.244 |
2002 |
16.0 |
4.241 |
2003 |
15.7 |
4.237 |
2004 |
15.4 |
4.234 |
2005 |
15.2 |
4.231 |
2006 |
14.9 |
4.228 |
2007 |
14.7 |
4.226 |
2008 |
14.4 |
4.223 |
2009 |
14.2 |
4.220 |
2010 |
13.9 |
4.217 |
2011 |
13.7 |
4.215 |
2012 |
13.4 |
4.212 |
2013 |
13.1 |
4.209 |
2014 |
12.9 |
4.207 |
2015 |
12.6 |
4.205 |
2016 |
12.4 |
4.202 |
2017 |
12.1 |
4.200 |
2018 |
11.9 |
4.198 |
2019 |
11.6 |
4.195 |
2020 |
11.3 |
4.193 |
2021 |
11.1 |
4.191 |
2022 |
10.8 |
4.189 |
2023 |
10.6 |
4.187 |
2024 |
10.3 |
4.185 |
2025 |
10.0 |
4.183 |
2026 |
9.8 |
4.182 |
2027 |
9.5 |
4.180 |
2028 |
9.3 |
4.178 |
2029 |
9.0 |
4.176 |
2030 |
8.7 |
4.175 |
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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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