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 |
|
Discov num |
STF 113 |
|
Comp |
A,BC |
|
Coord arcsec 2000 |
01 19 48.30 -00 30 32.5 |
|
| Date first |
1829 |
|
Date last |
2021 |
|
Obs |
334 |
|
| Pa first |
331 |
|
Pa last |
21.4 |
|
P.A. Now (θ) |
21.4° |
|
| Sep first |
1.3 |
|
Sep last |
1.582 |
|
Sep. Now (ρ) |
1.582" |
|
| Mag pri |
6.45 |
|
Mag sec |
6.99 |
|
delta mag (ΔM) |
0.54 |
|
Spectral class |
A2V+G4III (white/yellow) |
|
| Pri motion ra |
+014 |
|
Sec motion ra |
+014 |
|
| Pri motion dec |
-016 |
|
Sec motion dec |
-016 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
|
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 |
|
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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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