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Current system
02124+3018
STF 227
Iot Tri


Nearby doubles
25' : 02108+3005
COU 456

31' : 02147+3024
STF 232

33' : 02099+3025
MLB 681

40' : 02104+2948
BUP 29AB

42' : 02109+2941
CHE 64

46' : 02115+3102
MLB1034

48' : 02157+2957
MLB 738

54' : 02160+3044
MLB 739

57' : 02166+3031
MLB 741AB

61' : 02160+2940
MLB 740

64' : 02166+2945
KPP 83

69' : 02110+2912
CHE 66

71' : 02161+3109
COU 670

71' : 02083+2933
CHE 56

72' : 02130+3129
TDS2161

76' : 02087+2921
CHE 60

79' : 02086+2918
CHE 59AB

82' : 02061+3027
LDS3342

82' : 02086+3123
WIS 54

84' : 02080+2917
BKO 636

88' : 02133+2852
MLB 636

89' : 02055+3018
COU 455

90' : 02070+2923
CHE 49

92' : 02143+2850
MLB 682

93' : 02180+3116
A 959AB

95' : 02109+2846
CHE 65



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.

02124+3018 STF 227 (Iot Tri)

 
 
02h 12m 22.28s +30° 18' 11.1" P.A. 67.00 sep 4.0 mag 5.26,6.67 Sp G5III+F6V dist. 89.13 pc (290.74 l.y.)
 
 
Coord 2000 02124+3018 Discov num STF 227 Comp Coord arcsec 2000 02 12 22.28 +30 18 11.1
Date first 1821 Date last 2022 Obs 264
Pa first 78 Pa last 67.2 P.A. Now (θ) 67.2°
Sep first 3.9 Sep last 4.01 Sep. Now (ρ) 4.01"
Mag pri 5.26 Mag sec 6.67 delta mag (ΔM) 1.41 Spectral class G5III+F6V (yellow/yellow-white)
Pri motion ra -065 Sec motion ra -061
Pri motion dec -059 Sec motion dec -047
Notes N O (See Notes, Orbital solution)
rPM=0.144 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Iot Tri Var name TZ Tri Constellation Triangulum SAO 55347
HIP 10280 Tycho2 2309-01821-1 Gaia DR2 300312157810876544 HD 13480
HR 642 GC 2633 ADS 1697 BD BD+29 371
Bayer Iota Trianguli Bayer name Iot Tri Flamsteed 6 Trianguli Flamsteed name 6 Tri
Distance 89.13 Distance ly 290.74 Bayer greek ι Tri
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)5172.5y Periastron (T)4960.3y Semi-major axis (a)7.037a
Eccentricity (e)0.63 Inclination (i)110.3° Longitude of periastron (ω)277.5°
Node (Ω)158.8° Notesn ReferenceFMR2020c
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 69.3 3.920
2001 69.3 3.920
2002 69.2 3.920
2003 69.2 3.921
2004 69.1 3.921
2005 69.0 3.921
2006 69.0 3.921
2007 68.9 3.922
2008 68.9 3.922
2009 68.8 3.922
2010 68.7 3.923
2011 68.7 3.923
2012 68.6 3.923
2013 68.6 3.924
2014 68.5 3.924
2015 68.4 3.924
2016 68.4 3.925
2017 68.3 3.925
2018 68.3 3.925
2019 68.2 3.926
2020 68.1 3.926
2021 68.1 3.926
2022 68.0 3.927
2023 68.0 3.927
2024 67.9 3.927
2025 67.8 3.928
2026 67.8 3.928
2027 67.7 3.928
2028 67.6 3.929
2029 67.6 3.929
2030 67.5 3.930


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


 
  


wds02124%2B3018a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)2647y Periastron (T)3164.1y Semi-major axis (a)4.502a
Eccentricity (e)0.74 Inclination (i)119.9° Longitude of periastron (ω)270.3°
Node (Ω)169.6° Notesn ReferenceFMR2020c
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 69.4 3.912
2001 69.3 3.912
2002 69.2 3.912
2003 69.2 3.912
2004 69.1 3.913
2005 69.1 3.913
2006 69.0 3.913
2007 68.9 3.913
2008 68.9 3.913
2009 68.8 3.913
2010 68.8 3.913
2011 68.7 3.913
2012 68.6 3.913
2013 68.6 3.913
2014 68.5 3.913
2015 68.4 3.913
2016 68.4 3.913
2017 68.3 3.913
2018 68.3 3.913
2019 68.2 3.913
2020 68.1 3.913
2021 68.1 3.913
2022 68.0 3.914
2023 68.0 3.914
2024 67.9 3.914
2025 67.8 3.914
2026 67.8 3.914
2027 67.7 3.914
2028 67.7 3.914
2029 67.6 3.914
2030 67.5 3.914


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


 
  


wds02124%2B3018b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 02124+3018 STF 227 (Iot Tri) : NOTES
 
 
discov_num notes refcode
STF 227 iot Tri = 6 Tri. A is a spectroscopic binary, P = 14.73d. B is also an
SB, P = 2.24d. One component is variable: TZ Tri.
TZ Tri Koresko et al. (1998) PTI solution has period fixed at spectroscopic Krs1998
value of Kaye et al. (1995). Eat1995b
STF 227 H 2 34. MEv2010
T0 converted from negative to positive by subtracting from P. FMR2020c
 
 
REFERENCES
 
 
refcode metd author reference
Eat1995b - Kaye, A.B., Hall, D.S., Henry, G., Eaton, J.E., Lines, R.D., Lines, H.C., 1995AJ....109.2177K
Eat1995b Barksdale, W.S., Beck, S.J., et al.
Eat1995b AJ 109, 2177, 1995
FMR2020c Pa+ u Rica Romero, F. 2020OED....25...76R
FMR2020c +orb El Observador de Estrellas Dobles, Issue #25, 76, 2020
Krs1998 orb - Koresko, C.D., van Belle, G.T., Boden, A.F., Colavita, M.M., Creech-Eakman, M.J., 1998ApJ...509L..45K
Krs1998 Dumont, P.J., Gubler, J., Kulkarni, S.R., et al.
Krs1998 ApJ 509, L45, 1998
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 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
02124+3018 STF 227 2007 224 68 3.7 5.26 6.67 G0III N D 021222.28+301811.1
02124+3018 STF 227 2009 236 67 3.8 5.26 6.67 G0III N D 021222.28+301811.1
02124+3018 STF 227 2010 237 69 3.8 5.26 6.67 G0III N D 021222.28+301811.1
02124+3018 STF 227 2011 241 69 4.0 5.26 6.67 G0III N D 021222.28+301811.1
02124+3018 STF 227 2012 242 69 3.8 5.26 6.67 G0III N D 021222.28+301811.1
02124+3018 STF 227 2015 247 68 3.9 5.26 6.67 G0III N 021222.28+301811.1
02124+3018 STF 227 2016 254 69 3.7 5.26 6.67 G0III N 021222.28+301811.1
02124+3018 STF 227 2019 263 68 4.0 5.26 6.67 G5III+F6V N 021222.28+301811.1
02124+3018 STF 227 2022 264 67 4.0 5.26 6.67 G5III+F6V NO 021222.28+301811.1

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 02124+3018 STF 227 (Iot Tri) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 02124+3018 STF 227 (Iot Tri) : MEASURES
 
 
No records found.

 
 
WDS 02124+3018 (Iot Tri) : VIRTUAL EYEPIECE
 
 

02124+3018 STF 227A mag 5.26 Sp G5III 02124+3018 STF 227B sep 3.5 P.A. 64.00 mag 6.67 Sp F6V 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 02124+3018 (Iot Tri) : ALADIN DSS IMAGE @ 02h 12m 22.28s +30° 18' 11.1"
 
 
 
 
WDS 02124+3018 STF 227 (Iot Tri) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

02124+3018 STF 227 distance=0' 02108+3005 COU 456 distance=25' 02147+3024 STF 232 distance=31' 02099+3025 MLB 681 distance=33' 02104+2948 BUP 29AB distance=40' 02104+2948 BUP 29AC distance=40' 02104+2948 BUP 29AD distance=40' 02109+2941 CHE 64 distance=42' 02115+3102 MLB1034 distance=46' 02157+2957 MLB 738 distance=48' 02160+3044 MLB 739 distance=54' 02166+3031 MLB 741AB distance=57' 02166+3031 MLB 741AC distance=57' 02160+2940 MLB 740 distance=61' 02166+2945 KPP 83 distance=64' 02110+2912 CHE 66 distance=69' 02161+3109 COU 670 distance=71' 02083+2933 CHE 56 distance=71' 02130+3129 TDS2161 distance=72' 02087+2921 CHE 60 distance=76' 02086+2918 CHE 59AB distance=79' 02086+2918 BTG 7AD distance=79' 02086+2918 BTG 7AC distance=79' 02086+2918 BTG 7BC distance=79' 02061+3027 LDS3342 distance=82' 02086+3123 WIS 54 distance=82' 02080+2917 BKO 636 distance=84' 02133+2852 MLB 636 distance=88' 02055+3018 COU 455 distance=89' 02070+2923 CHE 49 distance=90' 02143+2850 MLB 682 distance=92' 02180+3116 A 959AB distance=93' 02180+3116 FOX 123AC distance=93' 02109+2846 CHE 65 distance=95' 02134+3155 CVR 40 distance=99' 02199+3047 A 960 distance=102' 02201+3043 TDS2209 distance=103' 02202+2949 A 961 distance=106' 02189+2914 HJL1015 distance=107' 02048+3110 COU 454 distance=110' 02174+2845 STF 239EC distance=115' 02211+2956 A 962 distance=116' 02053+2906 CHE 38CD distance=117' 02053+2906 WAK 14CE distance=117' 02053+2906 CHE 39AB distance=118' 02053+2906 CTT 12AC distance=118' 02085+2833 CHE 58 distance=118' 02093+2822 CHE 63 distance=122' 02066+2838 CHE 48 distance=125' 02178+3202 UC 712 distance=126' 02060+2844 CHE 44 distance=126' 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 02124+3018 STF 227 67 4.0
Show 02108+3005 COU 456 71 0.5 25
Show 02147+3024 STF 232 69 6.7 31
Show 02099+3025 MLB 681 85 6.4 33
Show 02104+2948 BUP 29 AB 190 77.5 40
Show 02104+2948 BUP 29 AC 353 187.3 40
Show 02104+2948 BUP 29 AD 250 228.4 40
Show 02109+2941 CHE 64 125 16.9 42
Show 02115+3102 MLB1034 285 11.7 46
Show 02157+2957 MLB 738 275 9.1 48
Show 02160+3044 MLB 739 130 16.0 54
Show 02166+3031 MLB 741 AB 297 7.1 57
Show 02166+3031 MLB 741 AC 146 18.1 57
Show 02160+2940 MLB 740 340 6.4 61
Show 02166+2945 KPP 83 249 3.6 64
Show 02110+2912 CHE 66 162 37.2 69
Show 02161+3109 COU 670 133 0.8 71
Show 02083+2933 CHE 56 55 28.3 71
Show 02130+3129 TDS2161 50 0.9 72
Show 02087+2921 CHE 60 275 29.3 76
Show 02086+2918 CHE 59 AB 216 27.5 79
Show 02086+2918 BTG 7 AD 297 28.5 79
Show 02086+2918 BTG 7 AC 209 39.9 79
Show 02086+2918 BTG 7 BC 196 12.6 79
Show 02061+3027 LDS3342 284 36.0 82
Show 02086+3123 WIS 54 79 503.6 82
Show 02080+2917 BKO 636 333 6.3 84
Show 02133+2852 MLB 636 269 4.3 88
Show 02055+3018 COU 455 112 0.3 89
Show 02070+2923 CHE 49 110 32.0 90
Show 02143+2850 MLB 682 291 5.9 92
Show 02180+3116 A 959 AB 4 3.9 93
Show 02180+3116 FOX 123 AC 309 52.6 93
Show 02109+2846 CHE 65 127 28.7 95
Show 02134+3155 CVR 40 161 29.5 99
Show 02199+3047 A 960 317 1.1 102
Show 02201+3043 TDS2209 157 2.2 103
Show 02202+2949 A 961 273 0.3 106
Show 02189+2914 HJL1015 77 71.9 107
Show 02048+3110 COU 454 258 1.0 110
Show 02174+2845 STF 239 EC 212 14.0 115
Show 02211+2956 A 962 67 0.9 116
Show 02053+2906 CHE 38 CD 172 2.5 117
Show 02053+2906 WAK 14 CE 50 10.1 117
Show 02053+2906 CHE 39 AB 40 18.8 118
Show 02053+2906 CTT 12 AC 74 65.1 118
Show 02085+2833 CHE 58 291 14.7 118
Show 02093+2822 CHE 63 193 27.5 122
Show 02066+2838 CHE 48 116 2.4 125
Show 02178+3202 UC 712 249 114.6 126
Show 02060+2844 CHE 44 81 9.9 126

 
 
WDS 02124+3018 : COMPONENTS
 
 
  A
B pa=64.0°
sep=3.55"
 
 
02124+3018 A
 
 
Componente originario normalizzato AB Name Iot Tri Coord arcsec 2000 021222.28+301811.1 Mag 5.26
Spectral class G5III (yellow) PmRA -65.00 PmDE -59.0 SAO 55347
HIP 10280 Tycho2 2309-01821-1 HD 13480 HR 642
GC 2633 ADS 1697 BD BD+29 371 Flamsteed 6 Trianguli
Flamsteed name 6 Tri
Tycho2
Tycho2 2309-01821-1 Pflag RAmdeg 33.09282345 DEmdeg 30.30307391
PmRA -69.9 PmDE -57.0 E RAmdeg 4 E DEmdeg 4
E pmRA 2.7 E pmDE 2.7 EpRAm 1991.75 EpDEm 1991.71
Num 3 Q RAmdeg 0.5 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.6 BTmag 6.246 E BTmag 0.014 VTmag 5.259
E VTmag 0.009 Prox 39 TYC T HIP 10280
CCDM A RAdeg 33.09300861 DEdeg 30.30320500 EpRA 1990 1.77
EpDE 1990 1.73 E RAdeg 3.7 E DEdeg 3.8 Posflg
Corr -0.1
SAO
SAO 55347 DelFlag RA1950 PmRA1950 -0.0049
DE1950 PmDE1950 -0.059 Vmag 5.4 SpType G0
Double code Source 70 CatNum 2633 DM BD+29 371
DMcomp BDsup HD 13480 M HD 0
GC 2633 RA1950rad 0.56488739 DE1950rad 0.52481517 PmRA2000 -0.0049
PmDE2000 -0.063
Hipparcos
Catalog H HIP 10280 Proxy H RAhms 02 12 22.32
DEdms +30 18 11.6 Vmag 4.94 VarFlag 1 R Vmag H
RAdeg 33.093 DEdeg 30.3032 AstroRef A Plx 10.68
CCDM 02124+3018 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 70 Rho 3.92 HD 13480 BD BD+29 371
CD CP Dm number +29 371 VIred 0.88
SpType F5V comp SB R SpType Coord arcsec 2000 021222.32+301811.6
Hipparcos 2
HIP 10280 Sn 15 So 3 Nc 2
RArad 0.5775820986 DErad 0.528890868 Plx 11.22 PmRA -65.05
PmDE -60.5 E RArad 0.53 E DErad 0.45 E Plx 0.7
E pmRA 0.7 E pmDE 0.61 Hpmag 5.0791 E Hpmag 0.0027
SHp 0.017 VA 1 BV 0.77 E BV 0.007
VI 0.81
CCDM
Ccdm 02124+3018 RComp Comp A Note1
Note2 Discov num DRAs -1.60 DDEs 9.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 5.2 Sp G0 PmNote *
PmRA -42 PmDE -85 Dm number +29 371 Cat1 BD
Name2 +30 219 Cat2 AGK2/3 HD 13480 M HD
ADS BDS A 1697 M ADS BDS N IDS IDS 02066N2950A
HIC 10280
 
 
02124+3018 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 021222.53+301812.7 Mag 6.67 Spectral class F6V (yellow-white)
PmRA -61.00 PmDE -47.0 Calc delta mag 1.41 Calc coord yes
CCDM
Ccdm 02124+3018 RComp Comp B Note1
Note2 Discov num STF 227 DRAs DDEs
R dRAs Year 1955 Theta 072 Rho 3.9
Obs 99 Vmag 6.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 1697 M ADS BDS N N IDS IDS 02066N2950B
HIC 10280