00345-0433 D 2 AB
00h 34m 29.79s -04° 32' 47.5" P.A. 76.00 sep 0.3 mag 7.63,8.04 Sp G0IV dist. 77.46 pc (252.67 l.y.)
| Coord 2000 |
00345-0433 |
|
Discov num |
D 2 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 34 29.79 -04 32 47.5 |
|
| Date first |
1858 |
|
Date last |
2019 |
|
Obs |
71 |
|
| Pa first |
237 |
|
Pa last |
76.1 |
|
P.A. Now (θ) |
76.1° |
|
| Sep first |
0.4 |
|
Sep last |
0.262 |
|
Sep. Now (ρ) |
0.262" |
|
| Mag pri |
7.63 |
|
Mag sec |
8.04 |
|
delta mag (ΔM) |
0.41 |
|
Spectral class |
G0IV (yellow) |
|
| Pri motion ra |
+100 |
|
Sec motion ra |
+085 |
|
| Pri motion dec |
+010 |
|
Sec motion dec |
+005 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.157 (< 0.3, Physical double)
This double is physical.
00345-0433 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
128831 |
00 34 30 -04 32 48 |
D 2 AB |
2019 |
71 |
76 |
0.3 |
7.63 |
8.04 |
0.41 |
Y |
<=== |
| Show |
HD 3125 |
128831 |
00 34 30 -04 32 48 |
STF 39 AB,C |
2018 |
60 |
45 |
20.1 |
7.10 |
8.65 |
1.55 |
|
|
| Show |
|
128831 |
00 34 30 -04 32 48 |
ALL 1 AB,D |
2017 |
12 |
159 |
200.8 |
7.10 |
9.99 |
2.89 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
SAO |
128831 |
|
HIP |
2713 |
|
Tycho2 |
4675-00561-1 |
|
| Gaia DR2 |
2528217934557758464 |
|
HD |
3125 |
|
GC |
680 |
|
ADS |
475 |
|
| BD |
BD-05 83 |
|
Distance |
77.46 |
|
Distance ly |
252.67 |
|
ORBITAL ELEMENTS
| Period (P) | 777y | |
Periastron (T) | 2008.5y | |
Semi-major axis (a) | 1.111a | |
| Eccentricity (e) | 0.79 | |
Inclination (i) | 77.6° | |
Longitude of periastron (ω) | 270.4° | |
| Node (Ω) | 83.1° | |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
273.9 |
0.210 |
| 2001 |
275.8 |
0.189 |
| 2002 |
278.1 |
0.167 |
| 2003 |
281.2 |
0.145 |
| 2004 |
285.5 |
0.123 |
| 2005 |
291.5 |
0.101 |
| 2006 |
300.8 |
0.080 |
| 2007 |
316.0 |
0.062 |
| 2008 |
340.2 |
0.051 |
| 2009 |
9.5 |
0.052 |
| 2010 |
32.6 |
0.064 |
| 2011 |
46.8 |
0.083 |
| 2012 |
55.6 |
0.104 |
| 2013 |
61.4 |
0.126 |
| 2014 |
65.5 |
0.148 |
| 2015 |
68.5 |
0.170 |
| 2016 |
70.8 |
0.191 |
| 2017 |
72.6 |
0.212 |
| 2018 |
74.2 |
0.232 |
| 2019 |
75.5 |
0.251 |
| 2020 |
76.6 |
0.269 |
| 2021 |
77.5 |
0.287 |
| 2022 |
78.4 |
0.304 |
| 2023 |
79.2 |
0.320 |
| 2024 |
79.9 |
0.336 |
| 2025 |
80.5 |
0.350 |
| 2026 |
81.1 |
0.364 |
| 2027 |
81.7 |
0.378 |
| 2028 |
82.2 |
0.391 |
| 2029 |
82.6 |
0.403 |
| 2030 |
83.1 |
0.415 |
| 2031 |
83.5 |
0.426 |
| 2032 |
83.9 |
0.437 |
| 2033 |
84.3 |
0.448 |
| 2034 |
84.7 |
0.458 |
| 2035 |
85.0 |
0.467 |
| 2036 |
85.4 |
0.477 |
| 2037 |
85.7 |
0.485 |
| 2038 |
86.0 |
0.494 |
| 2039 |
86.3 |
0.502 |
| 2040 |
86.6 |
0.510 |
| 2041 |
86.9 |
0.518 |
| 2042 |
87.2 |
0.525 |
| 2043 |
87.4 |
0.532 |
| 2044 |
87.7 |
0.539 |
| 2045 |
87.9 |
0.545 |
| 2046 |
88.2 |
0.552 |
| 2047 |
88.4 |
0.558 |
| 2048 |
88.7 |
0.564 |
| 2049 |
88.9 |
0.569 |
| 2050 |
89.1 |
0.575 |
|
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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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