08122+1739 HUT 1 Ca,Cb
08h 12m 13.27s +17° 38' 51.6" P.A. 344.00 sep 0.3 mag 6.20,7.10 Sp M1 dist. 25.08 pc (81.81 l.y.)
| Coord 2000 |
08122+1739 |
|
Discov num |
HUT 1 |
|
Comp |
Ca,Cb |
|
Coord arcsec 2000 |
08 12 13.27 +17 38 51.6 |
|
| Date first |
1982 |
|
Date last |
2021 |
|
Obs |
21 |
|
| Pa first |
241 |
|
Pa last |
343.6 |
|
P.A. Now (θ) |
343.6° |
|
| Sep first |
0.3 |
|
Sep last |
0.316 |
|
Sep. Now (ρ) |
0.316" |
|
| Mag pri |
6.20 |
|
Mag sec |
7.10 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
M1 (red) |
|
| Pri motion ra |
+086 |
|
Sec motion ra |
|
|
| Pri motion dec |
-091 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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
| Constellation |
Cancer |
|
SAO |
97646 |
|
HIP |
40167 |
|
Tycho2 |
1381-01641-1 |
|
| Gaia DR2 |
657244521593508992 |
|
HD |
68256 |
|
HR |
3208 |
|
GC |
11142 |
|
| ADS |
6650 |
|
BD |
BD+18 1867 |
|
Bayer |
Zeta 2 Cancri |
|
Bayer name |
Zet2 Cnc |
|
| Distance |
25.08 |
|
Distance ly |
81.81 |
|
Bayer greek |
ζ2 Cnc |
|
ORBITAL ELEMENTS
| Period (P) | 17.263y | ± 0.032 |
Periastron (T) | 1997.743y | ± 0.16 |
Semi-major axis (a) | 0.3592a | ± 0.0058 |
| Eccentricity (e) | 0.18 | ± 0.013 |
Inclination (i) | 150° | |
Longitude of periastron (ω) | 287.3° | ± 3.6 |
| Node (Ω) | 81° | ± 1.9 |
Notes | n | |
Reference | Tok2017b | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
88.0 |
0.322 |
| 2001 |
67.4 |
0.343 |
| 2002 |
48.5 |
0.353 |
| 2003 |
30.3 |
0.356 |
| 2004 |
12.3 |
0.358 |
| 2005 |
354.6 |
0.362 |
| 2006 |
337.5 |
0.369 |
| 2007 |
321.0 |
0.378 |
| 2008 |
305.3 |
0.386 |
| 2009 |
290.1 |
0.388 |
| 2010 |
274.7 |
0.382 |
| 2011 |
258.2 |
0.363 |
| 2012 |
239.4 |
0.332 |
| 2013 |
215.9 |
0.294 |
| 2014 |
185.9 |
0.263 |
| 2015 |
151.4 |
0.259 |
| 2016 |
119.7 |
0.283 |
| 2017 |
94.0 |
0.315 |
| 2018 |
72.6 |
0.338 |
| 2019 |
53.3 |
0.351 |
| 2020 |
35.0 |
0.356 |
| 2021 |
17.0 |
0.358 |
| 2022 |
359.2 |
0.361 |
| 2023 |
341.9 |
0.367 |
| 2024 |
325.3 |
0.376 |
| 2025 |
309.4 |
0.384 |
| 2026 |
294.1 |
0.388 |
| 2027 |
278.8 |
0.385 |
| 2028 |
262.7 |
0.369 |
| 2029 |
244.7 |
0.342 |
| 2030 |
222.7 |
0.304 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
