09179+2834 STF3121AB (IP Cnc)

 
 
09h 17m 53.45s +28 33' 37.7" P.A. 39.70 sep 0.4 mag 7.90,8.00 Sp K0 dist. 17.27 pc (56.33 l.y.)
 
 
Coord 2000
09179+2834
Discov num
STF3121
Comp
AB
Coord arcsec 2000
09 17 53.45 +28 33 37.7
Date first
1832
Date last
2019
Obs
410
Pa first
20
Pa last
210
P.A. Now (θ)
39.7°
Sep first
0.9
Sep last
0.5
Sep. Now (ρ)
0.43"
Mag pri
7.90
Mag sec
8.00
delta mag (ΔM)
0.1
Spectral class
K0 (yellow-orange)
Pri motion ra
+053
Sec motion ra
Pri motion dec
-511
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
09179+2834 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show IP Cnc 80745 09 17 53 +28 33 38 STF 3121 AB 2019 410 40 0.4 7.90 8.00 0.10 Y <===
Show 80745 09 17 53 +28 33 38 ABT 6 AB,C 2001 3 44 173.2 7.32 12.87 5.55
Show 80745 09 17 53 +28 33 38 ABT 6 AB,D 2001 4 133 165.9 7.32 11.96 4.64
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
209.8
Precise sep
0.51
Var name
IP Cnc
Constellation
Cancer
SAO
80745
HIP
45617
Tycho2
1957-00446-1
HD
79969
ADS
7284
GL
Gl 340A
BD
BD+29 1883
Distance
17.27
Distance ly
56.33
last precise pa
209.8
last precise sep
0.51
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.17y Periastron (T)1981y Semi-major axis (a)0.68a
Eccentricity (e)0.32 Inclination (i)76° Longitude of periastron (ω)311°
Node (Ω)24° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.714 193.3
2001 0.754 195.4
2002 0.783 197.3
2003 0.800 199.0
2004 0.804 200.8
2005 0.793 202.5
2006 0.766 204.4
2007 0.722 206.4
2008 0.660 208.7
2009 0.578 211.6
2010 0.476 215.6
2011 0.356 222.2
2012 0.226 236.1
2013 0.124 279.5
2014 0.171 344.1
2015 0.294 6.4
2016 0.404 15.7
2017 0.479 21.3
2018 0.514 25.8
2019 0.514 30.0
2020 0.484 34.4
2021 0.433 39.7
2022 0.370 46.7
2023 0.302 56.7
2024 0.239 72.3
2025 0.199 96.3
2026 0.201 125.3
2027 0.244 148.7
2028 0.309 163.7
2029 0.383 173.1
2030 0.457 179.5


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



 
 


wds09179%2B2834a.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
09179+2834 STF3121 AB 2005 391 205 0.8 7.90 8.00 K0 NOD 091753.42+283342.3
09179+2834 STF3121 AB 2007 392 209 0.7 7.90 8.00 K0 NOD 091753.42+283342.3
09179+2834 STF3121 AB 2009 398 214 0.5 7.90 8.00 K0 NOD 091753.45+283337.7
09179+2834 STF3121 AB 2010 404 219 0.5 7.90 8.00 K0 NOD 091753.45+283337.7
09179+2834 STF3121 AB 2017 404 205 0.5 7.90 8.00 K0 NO 091753.45+283337.7

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