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Doubles in session


Current system
02291+6724
STF 262 AB
Iot Cas


Nearby doubles
26' : 02248+6730
NSN 526

42' : 02250+6651
STF 252

51' : 02336+6642
HJ 1118

57' : 02378+6751
TLB 6

59' : 02207+6758
TDS2215

63' : 02395+6740
MLR 382

64' : 02182+6728
HJ 1112

71' : 02308+6834
TLB 7

75' : 02418+6736
TDS2339

76' : 02283+6839
FAL 3

79' : 02157+6740
ENG 10AB

79' : 02264+6607
TDS2249

79' : 02154+6727
FMR 183

82' : 02192+6629
HJ 1113

84' : 02217+6837
TDS2226

88' : 02156+6806
TDS2180

89' : 02194+6616
TDS2201

93' : 02270+6553
AZC 138

96' : 02405+6616
TDS2330

100' : 02460+6749
HJ 1125

101' : 02145+6631
MCA 6

102' : 02334+6546
DEA 68

103' : 02466+6710
TDS2357

104' : 02153+6620
TLB 3

108' : 02142+6832
HJ 1110

111' : 02435+6839
MLR 383



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

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 272
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 2021 22 18 0.6 4.66 7.88 3.22 Y
Show Iot Cas 12298 02 29 04 +67 24 09 STF 262 AB 2022 272 231 3.0 4.66 6.92 2.26 Y <===
Show 12298 02 29 04 +67 24 09 STF 262 AC 2022 233 117 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 12298 02 29 04 +67 24 09 CTU 2 Ca,Cb 2018 5 101 0.2 4.50 6.10 1.60
Show 12298 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 Notesn ReferenceTok2021b
Equinox Last observation Grade5(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
2031 226.6 3.117
2032 226.5 3.126
2033 226.3 3.134
2034 226.2 3.143
2035 226.1 3.151
2036 225.9 3.159
2037 225.8 3.168
2038 225.7 3.176
2039 225.6 3.185
2040 225.4 3.193
2041 225.3 3.201
2042 225.2 3.210
2043 225.0 3.218
2044 224.9 3.227
2045 224.8 3.235
2046 224.7 3.244
2047 224.6 3.252
2048 224.4 3.261
2049 224.3 3.269
2050 224.2 3.278


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds02291%2B6724f.png orbit plot
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
 
 
discov author
BAZ Baize, P.
DRU (Note: slight modifications to published measures, as well as additional measures,
DRU provided by Drummond, private comm.)
RAK Rakos, K.D., Albrecht, R., Jenkner, H., Kreidl, T., Michalke, R.,
RAK Oberlerchner, D., Santos, E., Schermann, A., et al.
TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK Martinez, M., & Mondaca, E.
TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK Tokovinin, A. & Briceno, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
02291+6724 STF 262 AB 2006 235 231 2.7 4.63 6.92 A5pSr +66 213 NOD 022903.99+672408.6
02291+6724 STF 262 AB 2007 236 232 2.7 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2008 237 231 2.9 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2009 240 230 2.8 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2010 243 231 2.8 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2011 247 230 2.5 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2013 256 230 2.9 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2014 260 229 2.7 4.63 6.92 A5pSr +66 213 NOD 022903.96+672408.7
02291+6724 STF 262 AB 2015 262 232 2.9 4.63 6.92 A5pSr +66 213 NO 022903.96+672408.7
02291+6724 STF 262 AB 2016 265 227 2.7 4.63 6.92 A5pSr +66 213 NO 022903.96+672408.7
02291+6724 STF 262 AB 2017 267 230 2.9 4.63 6.92 A5pSr +66 213 NO 022903.96+672408.7
02291+6724 STF 262 AB 2022 270 231 3.0 4.66 6.92 A4V+F5V +66 213 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 seeing notes
Show 25/11/09 alex_giraldi mean difficulty separated 250   III - Fair
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
 
 

02291+6724 STF 262A mag 4.66 Sp A4V 02291+6724 CHR 6Ab sep 0.6 P.A. 18.10 mag 7.88 Sp F9V 02291+6724 STF 262B sep 2.9 P.A. 233.60 mag 6.92 Sp F5V 02291+6724 STF 262C sep 0.1 P.A. 229.10 mag 9.05 Sp K3 02291+6724 CTU 2Cb sep 0.2 P.A. 143.10 mag 6.1 02291+6724 STF 262D sep 210.8 P.A. 59.80 mag 8.48 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 02291+6724 (Iot Cas) : ALADIN DSS IMAGE @ 02h 29m 03.96s +67° 24' 08.7"
 
 
 
 
WDS 02291+6724 STF 262 AB (Iot Cas) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

02291+6724 CHR 6Aa,Ab distance=1' 02291+6724 STF 262AB distance=1' 02291+6724 STF 262AC distance=1' 02291+6724 STF 262AD distance=1' 02291+6724 CTU 2Ca,Cb distance=1' 02291+6724 STF 262CD distance=1' 02291+6724 STF 262BC distance=1' 02248+6730 NSN 526 distance=26' 02250+6651 STF 252 distance=42' 02336+6642 HJ 1118 distance=51' 02378+6751 TLB 6 distance=57' 02207+6758 TDS2215 distance=59' 02395+6740 MLR 382 distance=63' 02182+6728 HJ 1112 distance=64' 02308+6834 TLB 7 distance=71' 02418+6736 TDS2339 distance=75' 02283+6839 FAL 3 distance=76' 02157+6740 ENG 10AB distance=79' 02264+6607 TDS2249 distance=79' 02157+6740 SHY 10BC distance=79' 02154+6727 FMR 183 distance=79' 02192+6629 HJ 1113 distance=82' 02217+6837 TDS2226 distance=84' 02156+6806 TDS2180 distance=88' 02194+6616 TDS2201 distance=89' 02270+6553 AZC 138 distance=93' 02405+6616 TDS2330 distance=96' 02460+6749 HJ 1125 distance=100' 02145+6631 MCA 6 distance=101' 02334+6546 DEA 68 distance=102' 02466+6710 TDS2357 distance=103' 02153+6620 TLB 3 distance=104' 02142+6832 HJ 1110 distance=108' 02435+6839 MLR 383 distance=111' 02136+6619 TDS2167 distance=112' 02433+6845 HJ 1121 distance=114' 02488+6721 MLR 385AB distance=115' 02441+6612 TDS2344 distance=115' 02094+6753 TDS2138 distance=117' 02462+6828 LDS3426AB distance=117' 02462+6828 LDS3426AC distance=117' 02474+6820 TDS2361 distance=118' 02348+6926 TDS2290 distance=127' 02389+6918 STF 278 distance=127' 02410+6539 MLR 119Aa,Ab distance=128' 02410+6539 STF 282AB distance=128' 02204+6924 TDS2212 distance=130' 02377+6520 HU 1041AB distance=135' 02377+6520 ARY 35AB,C distance=135' 02315+6938 MLR 379 distance=135' 02098+6849 HJ 1104 distance=137' grafico limitrofi
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 18 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 128 6.8 51
Show 02378+6751 TLB 6 278 6.8 57
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 02308+6834 TLB 7 80 13.9 71
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 26.3 100
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 02153+6620 TLB 3 149 19.3 104
Show 02142+6832 HJ 1110 220 10.9 108
Show 02435+6839 MLR 383 138 2.9 111
Show 02136+6619 TDS2167 191 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 23 0.5 127
Show 02410+6539 MLR 119 Aa,Ab 28 0.2 128
Show 02410+6539 STF 282 AB 295 6.4 128
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 134 115.6 135
Show 02315+6938 MLR 379 90 0.4 135
Show 02098+6849 HJ 1104 99 5.0 137

 
 
WDS 02291+6724 : COMPONENTS
 
 
  A Ab B C Cb
Ab pa=18.1°
sep=0.60"
 
B pa=233.6°
sep=2.86"
pa=227.7°
sep=3.37"
 
C pa=229.1°
sep=0.15"
pa=204.2°
sep=0.74"
pa=53.9°
sep=2.71"
 
Cb pa=143.1°
sep=0.18"
pa=186.4°
sep=0.72"
pa=57.1°
sep=2.87"
pa=100.8°
sep=0.23"
 
D pa=59.8°
sep=210.81"
pa=59.9°
sep=210.36"
pa=59.7°
sep=213.66"
pa=59.8°
sep=210.96"
pa=59.8°
sep=210.79"
 
 
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
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
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
Hipparcos
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 -27.92 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 233 Rho 2.831 HD 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
Hipparcos 2
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 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+672409.3 Mag 7.88 Spectral class F9V (yellow-white) Delta magnitude 3.22
Coordinate calculated 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 Delta magnitude 2.26
 
 
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 Delta magnitude 4.39
 
 
02291+6724 Cb
 
 
Coord arcsec 2000 022903.98+672408.6 Mag 6.1 Delta magnitude 1.44 Coordinate calculated yes
 
 
02291+6724 D
 
 
Coord arcsec 2000 022935.59+672554.8 Mag 8.48 PmRA -8.00 PmDE 2.0
SAO 12301 Tycho2 4058-00103-1 HD 15149 DM BD+66 214
Delta magnitude 3.82 Coordinate calculated yes
Tycho2
Tycho2 4058-00103-1 Pflag RAmdeg 37.39857237 DEmdeg 67.43161592
PmRA -3.3 PmDE 0.3 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.35 EpDEm 1991.43
Num 9 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.1 BTmag 8.653 E BTmag 0.016 VTmag 8.482
E VTmag 0.012 Prox 837 TYC T HIP
CCDM RAdeg 37.39859167 DEdeg 67.43161528 EpRA 1990 1.68
EpDE 1990 1.75 E RAdeg 5.3 E DEdeg 5.2 Posflg
Corr 0.2
SAO
SAO 12301 DelFlag RA1950 PmRA1950 -0.0012
DE1950 PmDE1950 -0.027 Vmag 8.6 SpType A0
Double code Source 2 CatNum 139 DM BD+66 214
DMcomp BDsup HD 15149 M HD 0
GC RA1950rad 0.63457122 DE1950rad 1.17301464 PmRA2000 -0.0016
PmDE2000 -0.032