01198-0031 STF 113 A,BC (42 Cet)
01h 19m 48.30s -00° 30' 32.5" P.A. 21.00 sep 1.6 mag 6.45,6.99 Sp A2V+G4III dist. 100.7 pc (328.48 l.y.)
Coord 2000 |
01198-0031 |
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Discov num |
STF 113 |
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Comp |
A,BC |
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Coord arcsec 2000 |
01 19 48.30 -00 30 32.5 |
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Date first |
1829 |
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Date last |
2021 |
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Obs |
334 |
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Pa first |
331 |
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Pa last |
21.4 |
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P.A. Now (θ) |
21.4° |
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Sep first |
1.3 |
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Sep last |
1.582 |
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Sep. Now (ρ) |
1.582" |
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Mag pri |
6.45 |
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Mag sec |
6.99 |
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delta mag (ΔM) |
0.54 |
|
Spectral class |
A2V+G4III (white/yellow) |
|
Pri motion ra |
+014 |
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Sec motion ra |
+014 |
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Pri motion dec |
-016 |
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Sec motion dec |
-016 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
01198-0031 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
42 Cet |
129235 |
01 19 48 -00 30 32 |
STF 113 A,BC |
2021 |
334 |
21 |
1.6 |
6.45 |
6.99 |
0.54 |
Y |
<=== |
Show |
|
129235 |
01 19 48 -00 30 31 |
FIN 337 BC |
2021 |
89 |
16 |
0.1 |
7.40 |
7.60 |
0.20 |
Y |
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
42 Cet |
|
Constellation |
Cetus |
|
SAO |
129235 |
|
HIP |
6226 |
|
Tycho2 |
4682-01383-2 |
|
HD |
8036 |
|
HR |
385 |
|
GC |
1600 |
|
ADS |
1081 |
|
BD |
BD-01 171 |
|
Flamsteed |
42 Ceti |
|
Flamsteed name |
42 Cet |
|
Distance |
100.7 |
|
Distance ly |
328.48 |
|
ORBITAL ELEMENTS
Period (P) | 650y | |
Periastron (T) | 1686y | |
Semi-major axis (a) | 1.324a | |
Eccentricity (e) | 0.64 | |
Inclination (i) | 43.5° | |
Longitude of periastron (ω) | 106.7° | |
Node (Ω) | 87.2° | |
Notes | n | |
Reference | Zir2015a | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
17.4 |
1.620 |
2001 |
17.6 |
1.621 |
2002 |
17.8 |
1.623 |
2003 |
18.0 |
1.624 |
2004 |
18.2 |
1.625 |
2005 |
18.4 |
1.626 |
2006 |
18.7 |
1.627 |
2007 |
18.9 |
1.628 |
2008 |
19.1 |
1.629 |
2009 |
19.3 |
1.630 |
2010 |
19.5 |
1.632 |
2011 |
19.7 |
1.633 |
2012 |
19.9 |
1.634 |
2013 |
20.1 |
1.635 |
2014 |
20.3 |
1.636 |
2015 |
20.5 |
1.637 |
2016 |
20.7 |
1.638 |
2017 |
20.9 |
1.639 |
2018 |
21.1 |
1.639 |
2019 |
21.3 |
1.640 |
2020 |
21.5 |
1.641 |
2021 |
21.7 |
1.642 |
2022 |
21.9 |
1.643 |
2023 |
22.1 |
1.644 |
2024 |
22.3 |
1.645 |
2025 |
22.5 |
1.646 |
2026 |
22.7 |
1.647 |
2027 |
22.9 |
1.647 |
2028 |
23.1 |
1.648 |
2029 |
23.3 |
1.649 |
2030 |
23.5 |
1.650 |
2031 |
23.7 |
1.650 |
2032 |
23.9 |
1.651 |
2033 |
24.1 |
1.652 |
2034 |
24.3 |
1.653 |
2035 |
24.5 |
1.653 |
2036 |
24.7 |
1.654 |
2037 |
24.9 |
1.655 |
2038 |
25.1 |
1.655 |
2039 |
25.3 |
1.656 |
2040 |
25.5 |
1.657 |
2041 |
25.7 |
1.657 |
2042 |
25.9 |
1.658 |
2043 |
26.1 |
1.658 |
2044 |
26.3 |
1.659 |
2045 |
26.4 |
1.659 |
2046 |
26.6 |
1.660 |
2047 |
26.8 |
1.660 |
2048 |
27.0 |
1.661 |
2049 |
27.2 |
1.661 |
2050 |
27.4 |
1.662 |
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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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