08122+1739 STF1196AB (Zet Cnc)

 
 
08h 12m 12.79s +17 38' 51.2" P.A. 0.90 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
2020
Obs
1221
Pa first
58
Pa last
2
P.A. Now (θ)
0.9°
Sep first
1.1
Sep last
1.2
Sep. Now (ρ)
1.11"
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 Zet2 Cnc 97646 08 12 13 +17 38 51 STF 1196 AB 2020 1221 1 1.1 5.30 6.25 0.95 Y <===
Show 97646 08 12 13 +17 38 51 STF 1196 AB,C 2020 574 64 6.3 4.92 5.85 0.93 Y
Show 97645 08 12 13 +17 38 51 STF 1196 AC 2020 638 62 6.2 5.30 5.85 0.55
Show 97645 08 12 13 +17 38 51 STF 1196 AB,D 2012 20 107 275.6 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 184 70 5.5 6.25 5.85 0.40
Show 97646 08 12 13 +17 38 52 HUT 1 Ca,Cb 2020 16 17 0.4 6.20 7.10 0.90 Y
Show 97646 08 12 13 +17 38 52 OCC 9141 Ca,Cc 1998 0 0.1 5.20 7.00 1.80
Show 97646 08 12 13 +17 38 54 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 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
2.3
Precise sep
1.152
Name
Zet Cnc
Constellation
Cancer
SAO
97646
HIP
40167
Tycho2
1381-01638-1
Gaia DR2
657244521593509376
HD
68255
HR
3209
GC
11142
ADS
6650
BD
BD+18 1867
Bayer
Zeta Cancri
Bayer name
Zet Cnc
Flamsteed
16 Cancri
Flamsteed name
16 Cnc
Distance
25.08
Distance ly
81.81
last precise pa
2.3
last precise sep
1.152
 
 
ORBITAL ELEMENTS
 
 
Period (P)59.4252y± 0.0658 Periastron (T)1929.5282y± 0.0775 Semi-major axis (a)0.85272a± 0.00334
Eccentricity (e)0.31435± 0.00183 Inclination (i)173.574°± 2.66 Longitude of periastron (ω)239.232°± 26.195
Node (Ω)67.744°± 26.034 Note Grade1(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 0.828 85.0
2001 0.857 79.2
2002 0.885 73.7
2003 0.912 68.6
2004 0.937 63.7
2005 0.960 59.1
2006 0.982 54.7
2007 1.003 50.5
2008 1.022 46.4
2009 1.039 42.5
2010 1.054 38.7
2011 1.068 35.0
2012 1.080 31.4
2013 1.090 27.9
2014 1.099 24.4
2015 1.105 21.0
2016 1.110 17.6
2017 1.114 14.2
2018 1.115 10.9
2019 1.115 7.6
2020 1.114 4.2
2021 1.110 0.9
2022 1.105 357.5
2023 1.098 354.0
2024 1.090 350.6
2025 1.079 347.0
2026 1.068 343.4
2027 1.054 339.7
2028 1.039 335.9
2029 1.022 332.0
2030 1.004 328.0


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds08122%2B1739h.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08122+1739 STF1196 AB 2008 1138 46 1.0 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2009 1145 43 1.1 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2010 1158 37 1.0 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2011 1163 33 1.0 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2012 1164 30 1.4 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2013 1174 28 1.1 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2014 1156 25 1.3 5.30 6.25 F8V NOD 081212.71+173853.3
08122+1739 STF1196 AB 2015 1172 20 1.0 5.30 6.25 F8V NO 081212.71+173853.3
08122+1739 STF1196 AB 2016 1180 18 1.1 5.30 6.25 F8V NO 081212.71+173853.3
08122+1739 STF1196 AB 2017 1194 9 1.0 5.30 6.25 F8V NO 081212.79+173851.2
08122+1739 STF1196 AB 2018 1198 10 1.2 5.30 6.25 F8V NO 081212.79+173851.2
08122+1739 STF1196 AB 2020 1216 5 1.0 5.30 6.25 F8V NO 081212.79+173851.2

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