08122+1739 STF 1196 AB,C (Zet2 Cnc)
08h 12m 12.79s +17° 38' 51.2" P.A. 64.00 sep 6.0 mag 4.92,5.85 Sp F8V dist. 25.08 pc (81.81 l.y.)
| Coord 2000 |
08122+1739 |
|
Discov num |
STF1196 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
08 12 12.79 +17 38 51.2 |
|
| Date first |
1780 |
|
Date last |
2020 |
|
Obs |
575 |
|
| Pa first |
178 |
|
Pa last |
64 |
|
P.A. Now (θ) |
64° |
|
| Sep first |
8.0 |
|
Sep last |
6.002 |
|
Sep. Now (ρ) |
6.002" |
|
| Mag pri |
4.92 |
|
Mag sec |
5.85 |
|
delta mag (ΔM) |
0.93 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+080 |
|
Sec motion ra |
+086 |
|
| Pri motion dec |
-129 |
|
Sec motion dec |
-091 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.253 (< 0.3, Physical double)
This double is physical.
08122+1739 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Tegmine |
97645 |
08 12 13 +17 38 51 |
STF 1196 AB |
2022 |
1230 |
359 |
1.1 |
5.30 |
6.25 |
0.95 |
Y |
|
| Show |
Zet2 Cnc |
97646 |
08 12 13 +17 38 51 |
STF 1196 AB,C |
2020 |
575 |
64 |
6.0 |
4.92 |
5.85 |
0.93 |
Y |
<=== |
| Show |
Tegmine |
97646 |
08 12 13 +17 38 51 |
STF 1196 AC |
2022 |
643 |
61 |
6.2 |
5.30 |
5.85 |
0.55 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 51 |
STF 1196 AB,D |
2017 |
21 |
107 |
275.9 |
4.92 |
8.89 |
3.97 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 51 |
ENH 1 AB,E |
2007 |
5 |
26 |
562.2 |
4.92 |
10.08 |
5.16 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 51 |
ENH 1 AB,F |
2007 |
5 |
46 |
638.1 |
4.92 |
10.26 |
5.34 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 51 |
ENH 1 AB,G |
2007 |
5 |
332 |
672.3 |
4.92 |
10.15 |
5.23 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 52 |
STF 1196 BC |
2020 |
187 |
70 |
5.5 |
6.25 |
5.85 |
0.40 |
|
|
| Show |
|
97646 |
08 12 13 +17 38 52 |
HUT 1 Ca,Cb |
2021 |
21 |
344 |
0.3 |
6.20 |
7.10 |
0.90 |
Y |
|
| Show |
|
97646 |
08 12 13 +17 38 52 |
OCC 9141 Ca,Cc |
1998 |
0 |
-1 |
0.1 |
5.20 |
7.00 |
1.80 |
|
|
| Show |
|
97646 |
08 12 13 +17 38 52 |
STF 1196 CD |
2000 |
7 |
107 |
277.5 |
5.85 |
8.89 |
3.04 |
|
|
| Show |
|
|
08 12 30 +17 47 14 |
ENH 1 EF |
2015 |
12 |
106 |
218.7 |
10.08 |
10.26 |
0.18 |
|
|
Ninefold system
8 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Zet2 Cnc |
|
Constellation |
Cancer |
|
SAO |
97646 |
|
HIP |
40167 |
|
| Tycho2 |
1381-01638-1 |
|
Gaia DR2 |
657244521593509376 |
|
HD |
68257 |
|
HR |
3208 |
|
| GC |
11142 |
|
ADS |
6650 |
|
BD |
BD+18 1867 |
|
Bayer |
Zeta 2 Cancri |
|
| Bayer name |
Zet2 Cnc |
|
Flamsteed |
16 Cancri |
|
Flamsteed name |
16 Cnc |
|
Distance |
25.08 |
|
| Distance ly |
81.81 |
|
Bayer greek |
ζ2 Cnc |
|
ORBITAL ELEMENTS
| Period (P) | 735.1011y | ± 335.2183 |
Periastron (T) | 1800.6148y | ± 18.4558 |
Semi-major axis (a) | 8.8962a | ± 2.53471 |
| Eccentricity (e) | 0.61788 | ± 0.14111 |
Inclination (i) | 119.578° | ± 8.651 |
Longitude of periastron (ω) | 295.246° | ± 19.126 |
| Node (Ω) | 157.656° | ± 15.006 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
72.6 |
6.011 |
| 2001 |
72.2 |
6.022 |
| 2002 |
71.8 |
6.033 |
| 2003 |
71.4 |
6.044 |
| 2004 |
71.0 |
6.056 |
| 2005 |
70.5 |
6.067 |
| 2006 |
70.1 |
6.079 |
| 2007 |
69.7 |
6.091 |
| 2008 |
69.3 |
6.103 |
| 2009 |
68.9 |
6.115 |
| 2010 |
68.5 |
6.127 |
| 2011 |
68.1 |
6.139 |
| 2012 |
67.7 |
6.152 |
| 2013 |
67.3 |
6.164 |
| 2014 |
66.9 |
6.177 |
| 2015 |
66.5 |
6.190 |
| 2016 |
66.1 |
6.203 |
| 2017 |
65.8 |
6.216 |
| 2018 |
65.4 |
6.230 |
| 2019 |
65.0 |
6.243 |
| 2020 |
64.6 |
6.256 |
| 2021 |
64.2 |
6.270 |
| 2022 |
63.8 |
6.284 |
| 2023 |
63.5 |
6.298 |
| 2024 |
63.1 |
6.312 |
| 2025 |
62.7 |
6.326 |
| 2026 |
62.3 |
6.340 |
| 2027 |
61.9 |
6.354 |
| 2028 |
61.6 |
6.369 |
| 2029 |
61.2 |
6.383 |
| 2030 |
60.8 |
6.398 |
|
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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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