08122+1739 STF 1196 AB (Tegmine)
08h 12m 12.79s +17° 38' 51.2" P.A. 349.00 sep 1.1 mag 5.30,6.25 Sp F8V dist. 25.08 pc (81.81 l.y.)
| Coord 2000 |
08122+1739 |
|
Discov num |
STF1196 |
|
Comp |
AB |
|
Coord arcsec 2000 |
08 12 12.79 +17 38 51.2 |
|
| Date first |
1825 |
|
Date last |
2025 |
|
Obs |
1244 |
|
| Pa first |
58 |
|
Pa last |
349.4 |
|
P.A. Now (θ) |
348.6° (calc) |
|
| Sep first |
1.1 |
|
Sep last |
1.06 |
|
Sep. Now (ρ) |
1.108" (calc) |
|
| Mag pri |
5.30 |
|
Mag sec |
6.25 |
|
delta mag (ΔM) |
0.95 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+080 |
|
Sec motion ra |
+080 |
|
| Pri motion dec |
-129 |
|
Sec motion dec |
-129 |
|
| 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 |
2025 |
1244 |
349 |
1.1 |
5.30 |
6.25 |
0.95 |
Y |
<=== |
| Show |
Zet2 Cnc |
97645 |
08 12 13 +17 38 51 |
STF 1196 AB,C |
2025 |
576 |
57 |
6.3 |
4.92 |
5.85 |
0.93 |
Y |
|
| Show |
Tegmine |
97645 |
08 12 13 +17 38 51 |
STF 1196 AC |
2022 |
650 |
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 |
190 |
70 |
5.5 |
6.25 |
5.85 |
0.40 |
|
|
| Show |
|
97645 |
08 12 13 +17 38 52 |
HUT 1 Ca,Cb |
2022 |
22 |
338 |
0.3 |
6.20 |
7.10 |
0.90 |
Y |
|
| Show |
|
97645 |
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
| Common name |
Tegmine |
|
Constellation |
Cancer |
|
SAO |
97645 |
|
HIP |
40167 |
|
| Tycho2 |
1381-01638-1 |
|
Gaia DR2 |
657244521593509376 |
|
HD |
68255 |
|
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) | 59.8y | ± 0.035 |
Periastron (T) | 1989.92y | ± 0.008 |
Semi-major axis (a) | 0.866a | ± 0.001 |
| Eccentricity (e) | 0.32 | ± 0 |
Inclination (i) | 170.9° | ± 0.3 |
Longitude of periastron (ω) | 0.8° | ± 2 |
| Node (Ω) | 189.8° | ± 2 |
Notes | n | |
Reference | USN2021a | |
| Equinox | | |
Last observation | 2020 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
91.3 |
0.802 |
| 2001 |
85.0 |
0.832 |
| 2002 |
79.1 |
0.861 |
| 2003 |
73.6 |
0.890 |
| 2004 |
68.4 |
0.918 |
| 2005 |
63.6 |
0.945 |
| 2006 |
59.0 |
0.970 |
| 2007 |
54.6 |
0.994 |
| 2008 |
50.4 |
1.016 |
| 2009 |
46.4 |
1.036 |
| 2010 |
42.5 |
1.055 |
| 2011 |
38.8 |
1.072 |
| 2012 |
35.2 |
1.087 |
| 2013 |
31.6 |
1.100 |
| 2014 |
28.2 |
1.112 |
| 2015 |
24.8 |
1.122 |
| 2016 |
21.5 |
1.130 |
| 2017 |
18.2 |
1.136 |
| 2018 |
14.9 |
1.140 |
| 2019 |
11.7 |
1.143 |
| 2020 |
8.4 |
1.143 |
| 2021 |
5.2 |
1.142 |
| 2022 |
1.9 |
1.139 |
| 2023 |
358.7 |
1.134 |
| 2024 |
355.4 |
1.127 |
| 2025 |
352.0 |
1.118 |
| 2026 |
348.6 |
1.108 |
| 2027 |
345.1 |
1.095 |
| 2028 |
341.6 |
1.081 |
| 2029 |
337.9 |
1.066 |
| 2030 |
334.1 |
1.048 |
| 2031 |
330.2 |
1.029 |
| 2032 |
326.1 |
1.007 |
| 2033 |
321.9 |
0.985 |
| 2034 |
317.4 |
0.961 |
| 2035 |
312.7 |
0.935 |
| 2036 |
307.7 |
0.908 |
| 2037 |
302.4 |
0.880 |
| 2038 |
296.8 |
0.851 |
| 2039 |
290.8 |
0.821 |
| 2040 |
284.2 |
0.790 |
| 2041 |
277.2 |
0.760 |
| 2042 |
269.6 |
0.730 |
| 2043 |
261.4 |
0.701 |
| 2044 |
252.4 |
0.674 |
| 2045 |
242.8 |
0.649 |
| 2046 |
232.4 |
0.628 |
| 2047 |
221.4 |
0.610 |
| 2048 |
209.8 |
0.598 |
| 2049 |
197.8 |
0.590 |
| 2050 |
185.6 |
0.589 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
