04492-3126 HDS 620 AB (HD 30774)
04h 49m 13.32s -31° 25' 35.6" P.A. 20.00 sep 0.4 mag 8.05,11.62 Sp G3/G5V dist. 40.9 pc (133.42 l.y.)
| Coord 2000 |
04492-3126 |
|
Discov num |
HDS 620 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 49 13.32 -31 25 35.6 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
12 |
|
| Pa first |
234 |
|
Pa last |
19.9 |
|
P.A. Now (θ) |
19.9° |
|
| Sep first |
0.6 |
|
Sep last |
0.353 |
|
Sep. Now (ρ) |
0.353" |
|
| Mag pri |
8.05 |
|
Mag sec |
11.62 |
|
delta mag (ΔM) |
3.57 |
|
Spectral class |
G3/G5V (yellow) |
|
| Pri motion ra |
+110 |
|
Sec motion ra |
|
|
| Pri motion dec |
-021 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
04492-3126 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 30774 |
195321 |
04 49 13 -31 25 36 |
HDS 620 AB |
2021 |
12 |
20 |
0.4 |
8.05 |
11.62 |
3.57 |
|
<=== |
| Show |
|
195321 |
04 49 13 -31 25 36 |
KPP 4355 AB,C |
2015 |
2 |
349 |
9.8 |
8.60 |
16.30 |
7.70 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 30774 |
|
Constellation |
Caelum |
|
SAO |
195321 |
|
HIP |
22395 |
|
| Tycho2 |
7046-00672-1 |
|
HD |
30774 |
|
CD |
CD-31 2043 |
|
CP |
CP-31 617 |
|
| Distance |
40.9 |
|
Distance ly |
133.42 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 04492-3126 HDS 620 |
| coord_arcsec_2000 | 044913.27-312535.5 |
| Period (P) | 60.23y | |
Periastron (T) | 2017.3y | |
Semi-major axis (a) | 0.449a | |
| Eccentricity (e) | 0.31 | |
Inclination (i) | 180° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 66.7° | |
Notes | | |
Reference | Tok2017c | |
| Equinox | 2000 | |
Last observation | 2016 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
200.4 |
0.516 |
| 2001 |
196.0 |
0.505 |
| 2002 |
191.4 |
0.493 |
| 2003 |
186.5 |
0.480 |
| 2004 |
181.4 |
0.466 |
| 2005 |
176.0 |
0.452 |
| 2006 |
170.2 |
0.437 |
| 2007 |
164.0 |
0.422 |
| 2008 |
157.3 |
0.407 |
| 2009 |
150.1 |
0.392 |
| 2010 |
142.4 |
0.377 |
| 2011 |
134.0 |
0.362 |
| 2012 |
124.9 |
0.349 |
| 2013 |
115.2 |
0.337 |
| 2014 |
104.7 |
0.326 |
| 2015 |
93.7 |
0.318 |
| 2016 |
82.1 |
0.312 |
| 2017 |
70.3 |
0.310 |
| 2018 |
58.4 |
0.311 |
| 2019 |
46.6 |
0.314 |
| 2020 |
35.2 |
0.321 |
| 2021 |
24.4 |
0.330 |
| 2022 |
14.2 |
0.341 |
| 2023 |
4.8 |
0.354 |
| 2024 |
356.0 |
0.368 |
| 2025 |
347.8 |
0.383 |
| 2026 |
340.3 |
0.398 |
| 2027 |
333.4 |
0.413 |
| 2028 |
326.9 |
0.428 |
| 2029 |
320.9 |
0.443 |
| 2030 |
315.2 |
0.458 |
|
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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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