02291+6724 STF 262 AB (Iot Cas)
02h 29m 03.96s +67° 24' 08.7" P.A. 231.00 sep 3.0 mag 4.66,6.92 Sp A4V+F5V dist. 40.73 pc (132.86 l.y.)
Coord 2000
02291+6724
Discov num
STF 262
Comp
AB
Coord arcsec 2000
02 29 03.96 +67 24 08.7
Date first
1782
Date last
2022
Obs
270
Pa first
290
Pa last
230.8
P.A. Now (θ)
230.8°
Sep first
1.5
Sep last
2.98
Sep. Now (ρ)
2.98"
Mag pri
4.66
Mag sec
6.92
delta mag (ΔM)
2.26
Spectral class
A4V+F5V (white/yellow-white)
Pri motion ra
-018
Sec motion ra
-018
Pri motion dec
+012
Sec motion dec
+012
Notes
N
O
(See Notes, Orbital solution)
This double is physical.
02291+6724 SYSTEM COMPONENTS
Show
name
SAO
coord
wds_name
last
obs
pa
sep
mag1
mag2
d_mag
orb
current
Show
12298
02 29 04 +67 24 09
CHR 6 Aa,Ab
2010
21
42
0.6
4.66
7.88
3.22
Y
Show
Iot Cas
12298
02 29 04 +67 24 09
STF 262 AB
2022
270
231
3.0
4.66
6.92
2.26
Y
<===
Show
12298
02 29 04 +67 24 09
STF 262 AC
2022
232
117
6.9
4.63
9.05
4.42
Show
12298
02 29 04 +67 24 09
STF 262 AD
2016
10
60
210.9
4.63
8.48
3.85
Show
12298
02 29 04 +67 24 07
STF 262 BC
2015
154
99
8.5
6.92
9.05
2.13
Show
02 29 04 +67 24 09
CTU 2 Ca,Cb
2018
5
101
0.2
4.50
6.10
1.60
Show
02 29 04 +67 24 09
STF 262 CD
2015
8
58
207.1
9.05
8.48
0.57
Sextuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name
Iot Cas
Constellation
Cassiopeia
SAO
12298
HIP
11569
Tycho2
4058-01504-1
Gaia DR2
517650349234855424
HD
15089
HR
707
GC
2952
ADS
1860
BD
BD+66 213
Bayer
Iota Cassiopeiae
Bayer name
Iot Cas
Distance
40.73
Distance ly
132.86
Bayer greek
ι Cas
ORBITAL ELEMENTS
Period (P) 2400y
Periastron (T) 940y ± 47
Semi-major axis (a) 6.5a
Eccentricity (e) 0.4
Inclination (i) 102.9° ± 0.3
Longitude of periastron (ω) 113.3° ± 3.4
Node (Ω) 188° ± 0.9
Notes n
Reference Tok2021b
Equinox
Last observation
Grade 5 (1=Definitive, 9=Indet.)
label
theta
rho
2000
231.1
2.863
2001
230.9
2.872
2002
230.8
2.880
2003
230.6
2.888
2004
230.5
2.896
2005
230.3
2.904
2006
230.2
2.912
2007
230.0
2.920
2008
229.9
2.928
2009
229.7
2.936
2010
229.6
2.944
2011
229.4
2.952
2012
229.3
2.960
2013
229.1
2.969
2014
229.0
2.977
2015
228.8
2.985
2016
228.7
2.993
2017
228.5
3.001
2018
228.4
3.010
2019
228.3
3.018
2020
228.1
3.026
2021
228.0
3.034
2022
227.8
3.043
2023
227.7
3.051
2024
227.6
3.059
2025
227.4
3.067
2026
227.3
3.076
2027
227.1
3.084
2028
227.0
3.092
2029
226.9
3.101
2030
226.7
3.109
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
WDS 02291+6724 STF 262 AB (Iot Cas) : NOTES
discov_num
notes
refcode
STF 262
iot Cas. The primary is an unresolved binary, also an Alpha CVn
CHR 6
type variable, P = 1.74 d, and an astrometric, spectroscopic, and
spectrum variable (Rakos 1962; Klock, AJ 70, 176, 1965). The RV
Rak1962
variation has not been confirmed.
Heintz (1962) also detected this pair as a submotion to the visual
Hei1962
orbit of the AB pair with a period of 52 years and an amplitude of
0".11. Star C (mag. 8.4, dG4) is probably physical, but Hopmann
Hop1960b
(1960) computed a hyperbolic orbit for it, as there is some RV
difference between C and A. q = periastron distance in the true
orbit = 6".7056. All hyperbolic orbits were rejected from the
Fourth and subsequent orbit catalogs.
Wor1983
Soderhjelm gives Aa,Ab,B,C quadruple solution (AB in HIP). High
Sod1999
mass-sum, strangely well-behaved speckle obs at Delta m=4?
See Baize & Petit (1989) catalog of doubles with variable component.
Baz1989d
Drummond et al. (2003) give solution for Aa,Ab incorporating motion of
Dru2003
the AB pair. The authors conclude that the motion of B relative to
the CHR pair appears to be rectilinear. Masses of the CHR components
are derived.
1985.8540: This autocorrelogram was remeasured; the new results are
listed in the catalog.
McA1987b
STF 262
AB: H 1 34. AC: H 3 4.
MEv2010
AC: Hyperbolic orbit.
Hop1960b
REFERENCES
refcode
metd
author
reference
Baz1989d
-
Baize, P. & Petit, M.
1989A&AS...77..497B
Baz1989d
A&AS 77, 497, 1989
Dru2003
A j
Drummond, J.D., Milster, S., Ryan, P., & Roberts, L.C.
2003ApJ...585.1007D
Dru2003
+orb
ApJ 585, 1007, 2003
Hei1962
orb -
Heintz, W.D.
1962VeMun...5..135H
Hei1962
Veroff. Sternw. Munchen 5, 135-160, 1962
Hop1960b
orb -
Hopmann, J.
1960MiWie..10..227H
Hop1960b
Mitt. Sternw. Wien 10, 227-256, 1960
McA1987b
Sc j
McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G.
1987AJ.....93..688M
McA1987b
AJ 93, 688, 1987
MEv2010
-
MacEvoy, B.
...................
MEv2010
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Rak1962
-
Rakos, K.,D.
1962LowOB...5..227R
Rak1962
Lowell Obs. Bull. 5, 227, 1962
Sod1999
orb -
Soderhjelm, S.
1999A&A...341..121S
Sod1999
A&A 341, 121, 1999
Tok2021b
orb
Tokovinin, A.
2021AJ....161..144T
Tok2021b
AJ 161, 144, 2021
Wor1983
-
Worley, C.E. & Heintz, W.D.
1983PUSNO..24g...1W
Wor1983
Pub. USNO 24, Pt. 7, 1983 (Fourth Orbit Catalog)
DISCOVERER
idgroup
discov
author
1
CHR
Center for High Ang. Res. Astronomy (speckle interferometry systems)
3
CTU
Christou, J.C., & Drummond, J.D.
6
STF
Struve, F.G.W.
WDS HISTORIC DATA
coord_2000
discov_num
comp
epoch
obs
pa
sep
mag_pri
mag_sec
spectr
notes
coord_arcsec_2000
02291+6724
STF 262
AB
2006
235
231
2.7
4.63
6.92
A5pSr
NOD
022903.99+672408.6
02291+6724
STF 262
AB
2007
236
232
2.7
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2008
237
231
2.9
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2009
240
230
2.8
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2010
243
231
2.8
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2011
247
230
2.5
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2013
256
230
2.9
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2014
260
229
2.7
4.63
6.92
A5pSr
NOD
022903.96+672408.7
02291+6724
STF 262
AB
2015
262
232
2.9
4.63
6.92
A5pSr
NO
022903.96+672408.7
02291+6724
STF 262
AB
2016
265
227
2.7
4.63
6.92
A5pSr
NO
022903.96+672408.7
02291+6724
STF 262
AB
2017
267
230
2.9
4.63
6.92
A5pSr
NO
022903.96+672408.7
02291+6724
STF 262
AB
2022
270
231
3.0
4.66
6.92
A4V+F5V
NO
022903.96+672408.7
If you need more information about this double, apply for a
data request form to the WDS.
WDS 02291+6724 STF 262 AB (Iot Cas) : VISUAL OBSERVATIONS REPORTS
Show
date
username
difficulty
separation
pa_estim
interest
notes
Show
22/10/21
daedalus1
mean difficulty
separated
229
do not miss it!
Seeing Pickering 7, good. Measures: theta 229, rho 2.93 +/- 0.090. Very cool star system! At 50x, bright A dwarfs C so that C appears as a bright pinpoint against more massive A. B was not visible. But as power is increased, one is surprised by the appearance of B. The entire system was resolved, very interestingly and beautifully, at 200x.
WDS 02291+6724 STF 262 AB (Iot Cas) : MEASURES
No records found.
WDS 02291+6724 (Iot Cas) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
WDS 02291+6724 (Iot Cas) : ALADIN DSS IMAGE @ 02h 29m 03.96s +67° 24' 08.7"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS
WDS 02291+6724 STF 262 AB (Iot Cas) : NEIGHBORHOODS
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show
name
coord_2000
discov#
comp
pa
sep
dist(')
Show
02291+6724
CHR 6
Aa,Ab
42
0.6
1
Show
02291+6724
STF 262
AB
231
3.0
1
Show
02291+6724
STF 262
AC
117
6.9
1
Show
02291+6724
STF 262
AD
60
210.9
1
Show
02291+6724
CTU 2
Ca,Cb
101
0.2
1
Show
02291+6724
STF 262
CD
58
207.1
1
Show
02291+6724
STF 262
BC
99
8.5
1
Show
02248+6730
NSN 526
312
2.4
26
Show
02250+6651
STF 252
43
3.3
42
Show
02336+6642
HJ 1118
129
7.1
51
Show
02207+6758
TDS2215
239
0.9
59
Show
02395+6740
MLR 382
5
0.2
63
Show
02182+6728
HJ 1112
215
11.6
64
Show
02418+6736
TDS2339
149
1.8
75
Show
02283+6839
FAL 3
5
7.2
76
Show
02157+6740
ENG 10
AB
324
27.5
79
Show
02264+6607
TDS2249
47
2.2
79
Show
02157+6740
SHY 10
BC
177
999.9
79
Show
02154+6727
FMR 183
110
4.4
79
Show
02192+6629
HJ 1113
179
8.6
82
Show
02217+6837
TDS2226
293
8.2
84
Show
02156+6806
TDS2180
277
0.8
88
Show
02194+6616
TDS2201
95
0.5
89
Show
02270+6553
AZC 138
162
17.9
93
Show
02405+6616
TDS2330
333
0.5
96
Show
02460+6749
HJ 1125
224
26.2
100
Show
02145+6631
MCA 6
188
0.1
101
Show
02334+6546
DEA 68
244
10.7
102
Show
02466+6710
TDS2357
166
0.4
103
Show
02142+6832
HJ 1110
220
10.9
108
Show
02435+6839
MLR 383
139
3.0
111
Show
02136+6619
TDS2167
172
0.6
112
Show
02433+6845
HJ 1121
238
12.1
114
Show
02488+6721
MLR 385
AB
221
0.2
115
Show
02441+6612
TDS2344
340
0.5
115
Show
02094+6753
TDS2138
201
2.6
117
Show
02462+6828
LDS3426
AB
89
213.5
117
Show
02462+6828
LDS3426
AC
168
174.7
117
Show
02474+6820
TDS2361
69
0.9
118
Show
02348+6926
TDS2290
143
2.2
127
Show
02389+6918
STF 278
17
0.5
127
Show
02410+6539
MLR 119
Aa,Ab
28
0.2
128
Show
02410+6539
STF 282
AB
295
6.7
128
Show
02204+6924
TDS2212
88
1.4
130
Show
02377+6520
HU 1041
AB
99
0.1
135
Show
02377+6520
ARY 35
AB,C
134
115.5
135
Show
02315+6938
MLR 379
90
0.4
135
Show
02098+6849
HJ 1104
99
5.0
137
Show
02472+6551
MLR 120
246
0.3
143
Show
02130+6533
TDS2160
333
0.5
148
Show
02313+6955
TDS2273
36
4.2
152
WDS 02291+6724 : COMPONENTS
A
Ab
B
C
Cb
Ab
pa=18.8°
sep=0.48"
B
pa=233.6°
sep=2.86"
pa=228.8°
sep=3.27"
C
pa=229.1°
sep=0.15"
pa=206.0°
sep=0.61"
pa=53.9°
sep=2.71"
Cb
pa=191.9°
sep=0.15"
pa=197.2°
sep=0.62"
pa=55.6°
sep=2.76"
pa=116.4°
sep=0.10"
D
pa=33.4°
sep=127.10"
pa=33.5°
sep=126.64"
pa=33.9°
sep=129.80"
pa=33.5°
sep=127.25"
pa=33.4°
sep=127.24"
02291+6724 A
Name
Iot Cas
Coord arcsec 2000
022903.96+672408.7
Mag
4.66
Spectral class
A4V (white)
PmRA
-18.00
PmDE
12.0
SAO
12298
HIP
11569
Tycho2
4058-01504-1
HD
15089
HR
707
GC
2952
BD
BD+66 213
Bayer
Iota
Bayer name
Iot
Tycho2
4058-01504-1
Pflag
P
RAmdeg
37.26642890
DEmdeg
67.40239570
PmRA
-18.0
PmDE
11.8
E RAmdeg
3
E DEmdeg
3
E pmRA
1.9
E pmDE
1.9
EpRAm
1991.61
EpDEm
1991.71
Num
4
Q RAmdeg
3.0
Q DEmdeg
0.7
Q pmRA
3.1
Q pmDE
0.7
BTmag
4.732
E BTmag
0.014
VTmag
4.627
E VTmag
0.009
Prox
28
TYC
T
HIP
11569
CCDM
A
RAdeg
37.26661028
DEdeg
67.40238944
EpRA 1990
1.64
EpDE 1990
1.74
E RAdeg
3.2
E DEdeg
3.2
Posflg
D
Corr
0.2
SAO
12298
DelFlag
RA1950
PmRA1950
-0.0025
DE1950
PmDE1950
0.016
Vmag
4.6
SpType
A5p
Double code
Source
70
CatNum
2952
DM
BD+66 213
DMcomp
BDsup
HD
15089
M HD
0
GC
2952
RA1950rad
0.63230778
DE1950rad
1.1724989
PmRA2000
-0.0029
PmDE2000
0.011
Catalog
H
HIP
11569
Proxy
H
RAhms
02 29 03.99
DEdms
+67 24 08.6
Vmag
4.46
VarFlag
1
R Vmag
H
RAdeg
37.2666
DEdeg
67.4024
AstroRef
A
Plx
23.04
CCDM
02292+6725
N CCDM
I
Nsys
1
Ncomp
2
MultFlag
C
Source
Qual
A
M HIP
AB
Theta
233
Rho
2.831
HD
15089
BD
BD+66 213
CD
CP
Dm number
+66 213
VIred
0.09
SpType
A5p Sr
R SpType
Coord arcsec 2000
022903.99+672408.6
HIP
11569
Sn
17
So
3
Nc
2
RArad
0.6504251761
DErad
1.1763935256
Plx
24.55
PmRA
-26.61
PmDE
38.21
E RArad
0.46
E DErad
0.53
E Plx
0.81
E pmRA
0.57
E pmDE
0.64
Hpmag
4.5135
E Hpmag
0.001
SHp
0.01
VA
1
BV
0.153
E BV
0.004
VI
0.17
02291+6724 Ab
Coord arcsec 2000
022903.99+672409.2
Mag
7.88
Spectral class
F9V (yellow-white)
Calc delta mag
3.22
Calc coord
yes
02291+6724 B
Coord arcsec 2000
022903.56+672407.0
Coord calc
022903.56+672407.0
Mag
6.92
Spectral class
F5V (yellow-white)
PmRA
-18.00
PmDE
12.0
Tycho2
4058-01504-2
Calc delta mag
2.26
Tycho2
4058-01504-2
Pflag
P
RAmdeg
37.26642890
DEmdeg
67.40239570
PmRA
-18.0
PmDE
11.8
E RAmdeg
3
E DEmdeg
3
E pmRA
1.9
E pmDE
1.9
EpRAm
1991.61
EpDEm
1991.71
Num
4
Q RAmdeg
3.0
Q DEmdeg
0.7
Q pmRA
3.1
Q pmDE
0.7
BTmag
7.374
E BTmag
0.015
VTmag
6.919
E VTmag
0.010
Prox
28
TYC
T
HIP
11569
CCDM
B
RAdeg
37.26497028
DEdeg
67.40191944
EpRA 1990
1.59
EpDE 1990
1.74
E RAdeg
4.0
E DEdeg
3.8
Posflg
D
Corr
0.0
02291+6724 C
Coord arcsec 2000
022903.94+672408.6
Coord calc
022903.94+672408.6
Mag
9.05
Spectral class
K3 (yellow-orange)
PmRA
-18.00
PmDE
12.0
Calc delta mag
4.39
02291+6724 Cb
Coord arcsec 2000
022903.95+672408.6
Mag
6.1
Calc delta mag
1.44
Calc coord
yes
02291+6724 D
Coord arcsec 2000
022916.11+672554.8
Mag
8.48
PmRA
-8.00
PmDE
2.0
Calc delta mag
3.82
Calc coord
yes