04076+3804 STT 531 AB (V491 Per)
04h 07m 34.35s +38° 04' 28.3" P.A. 353.00 sep 2.7 mag 7.32,9.69 Sp K1V dist. 20.38 pc (66.48 l.y.)
| Coord 2000 |
04076+3804 |
|
Discov num |
STT 531 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 07 34.35 +38 04 28.3 |
|
| Date first |
1851 |
|
Date last |
2018 |
|
Obs |
187 |
|
| Pa first |
146 |
|
Pa last |
352.9 |
|
P.A. Now (θ) |
352.9° |
|
| Sep first |
3.4 |
|
Sep last |
2.67 |
|
Sep. Now (ρ) |
2.67" |
|
| Mag pri |
7.32 |
|
Mag sec |
9.69 |
|
delta mag (ΔM) |
2.37 |
|
Spectral class |
K1V (yellow-orange) |
|
| Pri motion ra |
+174 |
|
Sec motion ra |
+174 |
|
| Pri motion dec |
-231 |
|
Sec motion dec |
-231 |
|
| Notes |
N
O
T
(See Notes, Orbital solution, Parallax indicates physical) |
|
This double is physical.
04076+3804 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
V491 Per |
56982 |
04 07 34 +38 04 28 |
STT 531 AB |
2018 |
187 |
353 |
2.7 |
7.32 |
9.69 |
2.37 |
Y |
<=== |
| Show |
|
56982 |
04 07 34 +38 04 28 |
STT 531 AC |
2015 |
20 |
217 |
225.1 |
7.32 |
8.81 |
1.49 |
|
|
| Show |
|
56982 |
04 07 34 +38 04 28 |
ALC 1 AE |
2017 |
6 |
100 |
746.0 |
7.32 |
5.57 |
1.75 |
|
|
| Show |
|
56979 |
04 07 23 +38 01 26 |
BU 545 CD |
2016 |
17 |
313 |
1.2 |
8.81 |
10.71 |
1.90 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V491 Per |
|
Constellation |
Perseus |
|
SAO |
56982 |
|
HIP |
19255 |
|
| Tycho2 |
2877-00247-1 |
|
Gaia DR2 |
225709641034907264 |
|
HD |
25893 |
|
GC |
4949 |
|
| ADS |
2995 |
|
BD |
BD+37 878 |
|
Distance |
20.38 |
|
Distance ly |
66.48 |
|
ORBITAL ELEMENTS
| Period (P) | 590y | |
Periastron (T) | 2070y | |
Semi-major axis (a) | 3.87a | |
| Eccentricity (e) | 0.25 | |
Inclination (i) | 104° | |
Longitude of periastron (ω) | 195° | |
| Node (Ω) | 160.3° | |
Notes | n | |
Reference | Hei1986b | |
| Equinox | 2000 | |
Last observation | 1985 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
357.5 |
2.128 |
| 2001 |
357.1 |
2.155 |
| 2002 |
356.6 |
2.181 |
| 2003 |
356.2 |
2.207 |
| 2004 |
355.7 |
2.233 |
| 2005 |
355.3 |
2.259 |
| 2006 |
354.9 |
2.284 |
| 2007 |
354.5 |
2.309 |
| 2008 |
354.1 |
2.334 |
| 2009 |
353.7 |
2.358 |
| 2010 |
353.3 |
2.382 |
| 2011 |
353.0 |
2.405 |
| 2012 |
352.6 |
2.428 |
| 2013 |
352.2 |
2.451 |
| 2014 |
351.9 |
2.474 |
| 2015 |
351.5 |
2.496 |
| 2016 |
351.2 |
2.517 |
| 2017 |
350.9 |
2.538 |
| 2018 |
350.5 |
2.559 |
| 2019 |
350.2 |
2.579 |
| 2020 |
349.9 |
2.599 |
| 2021 |
349.6 |
2.618 |
| 2022 |
349.3 |
2.637 |
| 2023 |
349.0 |
2.655 |
| 2024 |
348.7 |
2.673 |
| 2025 |
348.4 |
2.690 |
| 2026 |
348.1 |
2.707 |
| 2027 |
347.8 |
2.723 |
| 2028 |
347.5 |
2.739 |
| 2029 |
347.2 |
2.754 |
| 2030 |
346.9 |
2.768 |
|
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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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