01409+4952 HU 531 AB
01h 40m 52.28s +49° 52' 29.9" P.A. 352.00 sep 0.5 mag 9.50,10.00 Sp K1V dist. 89.85 pc (293.09 l.y.)
| Coord 2000 |
01409+4952 |
|
Discov num |
HU 531 |
|
Comp |
AB |
|
Coord arcsec 2000 |
01 40 52.28 +49 52 29.9 |
|
| Date first |
1902 |
|
Date last |
2016 |
|
Obs |
23 |
|
| Pa first |
4 |
|
Pa last |
351.5 |
|
P.A. Now (θ) |
351.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.45 |
|
Sep. Now (ρ) |
0.45" |
|
| Mag pri |
9.50 |
|
Mag sec |
10.00 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
K1V (yellow-orange) |
|
| Pri motion ra |
+054 |
|
Sec motion ra |
|
|
| Pri motion dec |
-017 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
01409+4952 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
01 40 52 +49 52 30 |
HU 531 AB |
2016 |
23 |
352 |
0.5 |
9.50 |
10.00 |
0.50 |
Y |
<=== |
| Show |
|
|
01 40 52 +49 52 30 |
HU 531 AB,C |
2015 |
30 |
280 |
6.1 |
9.84 |
10.02 |
0.18 |
|
|
| Show |
|
|
01 40 52 +49 52 30 |
HU 531 BC |
2021 |
10 |
282 |
6.6 |
9.84 |
10.02 |
0.18 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Andromeda |
|
HIP |
7841 |
|
ADS |
1315 |
|
BD |
BD+49 435 |
|
| Distance |
89.85 |
|
Distance ly |
293.09 |
|
ORBITAL ELEMENTS
| Period (P) | 100.03y | |
Periastron (T) | 1956.23y | |
Semi-major axis (a) | 0.317a | |
| Eccentricity (e) | 0.512 | |
Inclination (i) | 127.6° | |
Longitude of periastron (ω) | 332.1° | |
| Node (Ω) | 161.5° | |
Notes | | |
Reference | Msn2014b | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
5.7 |
0.418 |
| 2001 |
4.7 |
0.423 |
| 2002 |
3.6 |
0.428 |
| 2003 |
2.6 |
0.433 |
| 2004 |
1.6 |
0.437 |
| 2005 |
0.6 |
0.441 |
| 2006 |
359.6 |
0.444 |
| 2007 |
358.7 |
0.447 |
| 2008 |
357.7 |
0.450 |
| 2009 |
356.8 |
0.452 |
| 2010 |
355.9 |
0.454 |
| 2011 |
355.0 |
0.456 |
| 2012 |
354.1 |
0.457 |
| 2013 |
353.2 |
0.457 |
| 2014 |
352.3 |
0.458 |
| 2015 |
351.3 |
0.457 |
| 2016 |
350.4 |
0.457 |
| 2017 |
349.5 |
0.456 |
| 2018 |
348.6 |
0.454 |
| 2019 |
347.7 |
0.452 |
| 2020 |
346.8 |
0.449 |
| 2021 |
345.8 |
0.446 |
| 2022 |
344.9 |
0.443 |
| 2023 |
343.9 |
0.439 |
| 2024 |
342.9 |
0.434 |
| 2025 |
341.9 |
0.429 |
| 2026 |
340.8 |
0.424 |
| 2027 |
339.8 |
0.417 |
| 2028 |
338.6 |
0.411 |
| 2029 |
337.5 |
0.403 |
| 2030 |
336.3 |
0.395 |
|
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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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