04340-5503 B 2092 AB
04h 33m 59.72s -55° 02' 42.0" P.A. 212.00 sep 0.1 mag 3.62,4.57 Sp A0IIIs dist. 51.71 pc (168.68 l.y.)
Coord 2000 |
04340-5503 |
|
Discov num |
B 2092 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 33 59.72 -55 02 42.0 |
|
Date first |
1956 |
|
Date last |
2021 |
|
Obs |
39 |
|
Pa first |
154 |
|
Pa last |
212.2 |
|
P.A. Now (θ) |
284.2° |
|
Sep first |
0.3 |
|
Sep last |
0.106 |
|
Sep. Now (ρ) |
0.058" |
|
Mag pri |
3.62 |
|
Mag sec |
4.57 |
|
delta mag (ΔM) |
0.95 |
|
Spectral class |
A0IIIs (white) |
|
Pri motion ra |
+051 |
|
Sec motion ra |
|
|
Pri motion dec |
-004 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
04340-5503 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
233564 |
04 33 60 -55 02 42 |
B 2092 AB |
2021 |
39 |
212 |
0.1 |
3.62 |
4.57 |
0.95 |
Y |
<=== |
Show |
Alp Dor |
233564 |
04 33 60 -55 02 42 |
HJ 3668 AB,C |
1999 |
9 |
94 |
77.2 |
3.24 |
10.20 |
6.96 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Dorado |
|
SAO |
233564 |
|
HIP |
21281 |
|
Tycho2 |
8512-02115-1 |
|
HD |
29305 |
|
HR |
1465 |
|
GC |
5600 |
|
CP |
CP-55 663 |
|
Bayer |
Alpha Doradus |
|
Bayer name |
Alp Dor |
|
FK5 |
171 |
|
Distance |
51.71 |
|
Distance ly |
168.68 |
|
Bayer greek |
α Dor |
|
ORBITAL ELEMENTS
Period (P) | 12.11y | |
Periastron (T) | 1986.9y | |
Semi-major axis (a) | 0.201a | |
Eccentricity (e) | 0.777 | |
Inclination (i) | 46° | |
Longitude of periastron (ω) | 40° | |
Node (Ω) | 304.9° | |
Notes | n | |
Reference | Hrt2010a | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
116.3 |
0.150 |
2001 |
130.7 |
0.234 |
2002 |
138.5 |
0.283 |
2003 |
144.4 |
0.310 |
2004 |
149.7 |
0.321 |
2005 |
154.8 |
0.317 |
2006 |
160.3 |
0.301 |
2007 |
166.6 |
0.273 |
2008 |
174.8 |
0.233 |
2009 |
187.2 |
0.180 |
2010 |
212.5 |
0.115 |
2011 |
303.7 |
0.050 |
2012 |
113.5 |
0.138 |
2013 |
129.6 |
0.227 |
2014 |
137.8 |
0.279 |
2015 |
143.8 |
0.308 |
2016 |
149.1 |
0.320 |
2017 |
154.2 |
0.318 |
2018 |
159.6 |
0.304 |
2019 |
165.8 |
0.277 |
2020 |
173.7 |
0.238 |
2021 |
185.5 |
0.186 |
2022 |
208.3 |
0.122 |
2023 |
284.2 |
0.058 |
2024 |
110.2 |
0.124 |
2025 |
128.4 |
0.219 |
2026 |
137.0 |
0.274 |
2027 |
143.2 |
0.306 |
2028 |
148.5 |
0.320 |
2029 |
153.7 |
0.319 |
2030 |
159.0 |
0.306 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|