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Doubles in session


Current system
22288-0001
STF 2909 AB
Zet1 Aqr


Nearby doubles
16' : 22295-0012
BU 76AB

22' : 22302+0008
BU 1264

31' : 22272-0019
ARY 31

36' : 22265+0003
KPP3379

44' : 22276+0040
HDS3181

48' : 22259+0017
FRJ 1

51' : 22303+0047
RST5485

54' : 22261+0038
ROE 55

55' : 22252-0004
ROE 54

58' : 22269-0051
ELP 48

61' : 22272-0056
BAL 632

69' : 22330-0029
SLW1277

78' : 22290+0118
HDO 319AB

80' : 22332-0046
J 291

80' : 22302+0118
GWP3161

82' : 22245+0051
MRG 4

92' : 22311+0126
TDT3564AB

111' : 22221+0045
ARY 30

111' : 22272-0146
STF2904

111' : 22362+0010
STF2921AB

114' : 22306+0151
ARY 32AB

120' : 22243-0138
GIC 180

124' : 22210+0039
RST5168

124' : 22340-0134
BU 1515AB

127' : 22206-0031
SCA 125

132' : 22205-0041
SLP 1



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.

22288-0001 STF 2909 AB (Zet1 Aqr)

 
 
22h 28m 49.81s -00° 01' 12.2" P.A. 157.00 sep 2.4 mag 4.34,4.49 Sp F3IV-V dist. 28.17 pc (91.89 l.y.)
 
 
Coord 2000 22288-0001 Discov num STF2909 Comp AB Coord arcsec 2000 22 28 49.81 -00 01 12.2
Date first 1777 Date last 2021 Obs 1199
Pa first 18 Pa last 157.3 P.A. Now (θ) 154.4°
Sep first 3.0 Sep last 2.387 Sep. Now (ρ) 2.407"
Mag pri 4.34 Mag sec 4.49 delta mag (ΔM) 0.15 Spectral class F3IV-V (yellow-white)
Pri motion ra +195 Sec motion ra +176
Pri motion dec +034 Sec motion dec +013
Notes N O (See Notes, Orbital solution)
rPM=0.143 (< 0.3, Physical double)
This double is physical.
 
 
22288-0001 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 146107 22 28 50 -00 01 12 EBE 1 Aa,Ab 2021 16 218 0.7 4.34 11.30 6.96 Y
Show Zet1 Aqr 146107 22 28 50 -00 01 12 STF 2909 AB 2021 1199 157 2.4 4.34 4.49 0.15 Y <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Zet1 Aqr Constellation Aquarius SAO 146107 HIP 110960
Tycho2 5226-01605-1 HD 213052 HR 8558 GC 31398
ADS 15971 BD BD-00 4365 Bayer Zeta 1 Aquarii Bayer name Zet1 Aqr
Flamsteed 55 Aquarii Flamsteed name 55 Aqr Distance 28.17 Distance ly 91.89
Bayer greek ζ1 Aqr
 
 
ORBITAL ELEMENTS
 
 
Period (P)426.6517y± 122.5798 Periastron (T)1987.2881y± 13.5585 Semi-major axis (a)3.17843a± 0.34966
Eccentricity (e)0.3001± 0.1203 Inclination (i)141.983°± 5.944 Longitude of periastron (ω)284.866°± 30.22
Node (Ω)137.98°± 7.616 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 185.8 1.954
2001 184.1 1.972
2002 182.5 1.990
2003 180.9 2.009
2004 179.3 2.028
2005 177.8 2.047
2006 176.2 2.067
2007 174.8 2.086
2008 173.3 2.106
2009 171.9 2.126
2010 170.5 2.147
2011 169.1 2.167
2012 167.7 2.187
2013 166.4 2.208
2014 165.1 2.228
2015 163.8 2.248
2016 162.6 2.269
2017 161.3 2.289
2018 160.1 2.309
2019 158.9 2.329
2020 157.8 2.348
2021 156.6 2.368
2022 155.5 2.387
2023 154.4 2.407
2024 153.3 2.426
2025 152.2 2.444
2026 151.1 2.463
2027 150.1 2.481
2028 149.0 2.499
2029 148.0 2.516
2030 147.0 2.534


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


 
  


wds22288-0001l.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 22288-0001 STF 2909 AB (Zet1 Aqr) : NOTES
 
 
discov_num notes refcode
STF2909 A: zet 2 Aqr = 55 Aqr A
B: zet 1 Aqr = 55 Aqr B
AB: LDS4971.
EBE 1 The close pair has been resolved by infrared speckle interferometry
(McCarthy 1983). Suspected variability of one of the components is Mcy1983
unconfirmed. Aa,Ab also known as TOK 201.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
A perturbation of the AB orbit (period ~25y) was first noted by Strand Str1942
(1942). The mass of the third star was subsequently estimated at 0.22
Msun by Harrington (1968) and 0.4 Msun by Heintz (1984). Based on Hrr1968
parallax observations, Franz (1958) associated this third star with Hei1984c
the B component, while Heintz favored the A component. Ebersberger & Fnz1958
Weigelt (1979) found a close visual companion to the A component, Ebe1979
while McCarthy et al. (1982) discovered a companion to B in the near Mcy1982b
infrared. Scardia et al (2010) find the astrometry of the McCarthy Sca2010c
companion to be in good agreement with predictions of the perturbation
orbit, so assume this orbit is associated with B.
H 2 7. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Ebe1979 S j Ebersberger, J. & Weigelt, G. .
Ebe1979 ESO Messenger 18, 24, 1979
Fnz1958 orb - Franz, O.G. 1958AJ.....63..329F
Fnz1958 AJ 63, 329, 1958
Hei1984c orb - Heintz, W.D. 1984ApJ...284..806H
Hei1984c ApJ 284, 806, 1984
Hrr1968 orb - Harrington, R.S. 1968AJ.....73..508H
Hrr1968 AJ 73, 508, 1968
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
Mcy1982b Si - McCarthy, D.W., Low, F. & Kleinman, S. 1982BAAS...14..777M
Mcy1982b BAAS 14, 777, 1982
Mcy1983 Si - McCarthy, D.W. 1983nssl.conf..107M
Mcy1983 +C IAU Colloq 76, 107, 1983
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Sca2010c S j Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R.W., & Sala, M. 2010AN....331..286S
Sca2010c +orb AN 331, 286, 2010
Str1942 orb - Strand, K.A. 1942AJ.....49..165S
Str1942 AJ 49, 165, 1942
 
 
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
22288-0001 STF2909 AB 2009 1209 169 2.1 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2010 1212 168 2.2 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2011 1201 166 2.2 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2012 1202 167 2.0 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2013 1216 165 2.3 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2014 1158 165 2.1 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2015 1161 164 2.3 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2016 1169 163 2.3 4.34 4.49 F3IV-V NO 222849.81-000112.2
22288-0001 STF2909 AB 2017 1181 161 2.3 4.34 4.49 F3IV-V NO 222849.81-000112.2
22288-0001 STF2909 AB 2018 1184 161 2.3 4.34 4.49 F3IV-V NO 222849.81-000112.2
22288-0001 STF2909 AB 2019 1191 159 2.4 4.34 4.49 F3IV-V NO 222849.81-000112.2
22288-0001 STF2909 AB 2020 1195 156 2.4 4.34 4.49 F3IV-V NO 222849.81-000112.2
22288-0001 STF2909 AB 2021 1199 157 2.4 4.34 4.49 F3IV-V NO 222849.81-000112.2

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

 
 
WDS 22288-0001 STF 2909 AB (Zet1 Aqr) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 22288-0001 STF 2909 AB (Zet1 Aqr) : MEASURES
 
 
No records found.

 
 
WDS 22288-0001 (Zet1 Aqr) : VIRTUAL EYEPIECE
 
 

22288-0001 STF2909A mag 4.34 Sp F3IV 22288-0001 EBE 1Ab sep 0.7 P.A. 217.60 mag 11.3 Sp V 22288-0001 STF2909B sep 2.4 P.A. 157.30 mag 4.49 Sp V 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 22288-0001 (Zet1 Aqr) : ALADIN DSS IMAGE @ 22h 28m 49.81s -00° 01' 12.2"
 
 
 
 
WDS 22288-0001 STF 2909 AB (Zet1 Aqr) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

22288-0001 STF2909AB distance=0' 22295-0012 BU 76AB distance=16' 22295-0012 BU 76AC distance=16' 22302+0008 BU 1264 distance=22' 22272-0019 ARY 31 distance=31' 22265+0003 KPP3379 distance=36' 22276+0040 HDS3181 distance=44' 22259+0017 FRJ 1 distance=48' 22303+0047 RST5485 distance=51' 22261+0038 ROE 55 distance=54' 22252-0004 ROE 54 distance=55' 22269-0051 ELP 48 distance=58' 22272-0056 BAL 632 distance=61' 22330-0029 SLW1277 distance=69' 22290+0118 HDO 319AB distance=78' 22290+0118 HDO 319AC distance=78' 22290+0118 HDO 319AD distance=78' 22290+0118 FOX9018AE distance=78' 22332-0046 J 291 distance=80' 22302+0118 GWP3161 distance=80' 22245+0051 MRG 4 distance=82' 22311+0126 TDT3564AB distance=92' 22221+0045 ARY 30 distance=111' 22272-0146 STF2904 distance=111' 22362+0010 STF2921AB distance=111' 22362+0010 STF2921AC distance=111' 22306+0151 ARY 32AB distance=114' 22306+0151 A 2294BC distance=114' 22306+0151 B 2902BD distance=114' 22243-0138 GIC 180 distance=120' 22360-0050 JOD 25DE distance=121' 22210+0039 RST5168 distance=124' 22340-0134 BU 1515AB distance=124' 22340-0134 BU 1515AC distance=124' 22206-0031 SCA 125 distance=127' 22205-0041 SLP 1 distance=132' 22374+0014 J 919 distance=133' 22340-0147 BU 77AB distance=134' 22340-0147 BU 77AC distance=134' 22247-0159 ALP 28 distance=135' 22217-0123 HJ 3106 (Sadachbia) distance=137' 22197-0004 OSW 20 distance=138' 22370+0108 CBL 543 distance=140' 22197+0034 OSW 19 distance=142' 22229-0150 UC 4729 distance=142' 22384-0035 SLW1280 distance=148' 22385+0038 UC 4782 distance=150' 22329+0219 LDS4976AB distance=151' 22218-0150 SCA 126 distance=155' 22183-0022 HDS3160 distance=159' 22394-0015 BAL 938 distance=160' 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 22288-0001 STF2909 AB 157 2.4
Show 22288-0001 EBE 1 Aa,Ab 218 0.7
Show 22295-0012 BU 76 AB 8 1.6 16
Show 22295-0012 BU 76 AC 331 49.7 16
Show 22302+0008 BU 1264 17 3.7 22
Show 22272-0019 ARY 31 257 96.4 31
Show 22265+0003 KPP3379 47 2.6 36
Show 22276+0040 HDS3181 238 1.3 44
Show 22259+0017 FRJ 1 195 0.9 48
Show 22303+0047 RST5485 272 1.1 51
Show 22261+0038 ROE 55 49 5.2 54
Show 22252-0004 ROE 54 203 6.9 55
Show 22269-0051 ELP 48 78 5.4 58
Show 22272-0056 BAL 632 66 8.4 61
Show 22330-0029 SLW1277 15 109.7 69
Show 22290+0118 HDO 319 AB 180 3.1 78
Show 22290+0118 HDO 319 AC 186 89.9 78
Show 22290+0118 HDO 319 AD 304 150.0 78
Show 22290+0118 FOX9018 AE 347 26.0 78
Show 22332-0046 J 291 175 3.4 80
Show 22302+0118 GWP3161 95 10.3 80
Show 22245+0051 MRG 4 344 7.5 82
Show 22311+0126 TDT3564 AB 239 0.8 92
Show 22221+0045 ARY 30 340 119.9 111
Show 22272-0146 STF2904 311 8.3 111
Show 22362+0010 STF2921 AB 237 30.0 111
Show 22362+0010 STF2921 AC 175 84.9 111
Show 22306+0151 ARY 32 AB 289 97.6 114
Show 22306+0151 A 2294 BC 204 3.1 114
Show 22306+0151 B 2902 BD 349 2.2 114
Show 22243-0138 GIC 180 297 83.4 120
Show 22360-0050 JOD 25 DE 292 0.6 121
Show 22210+0039 RST5168 142 1.1 124
Show 22340-0134 BU 1515 AB 299 100.9 124
Show 22340-0134 BU 1515 AC 276 127.4 124
Show 22206-0031 SCA 125 71 104.8 127
Show 22205-0041 SLP 1 293 0.9 132
Show 22374+0014 J 919 75 4.9 133
Show 22340-0147 BU 77 AB 215 2.8 134
Show 22340-0147 BU 77 AC 230 25.8 134
Show 22247-0159 ALP 28 323 22.9 135
Show Sadachbia 22217-0123 HJ 3106 151 33.2 137
Show 22197-0004 OSW 20 258 44.4 138
Show 22370+0108 CBL 543 144 23.8 140
Show 22197+0034 OSW 19 293 30.0 142
Show 22229-0150 UC 4729 162 17.6 142
Show 22384-0035 SLW1280 117 13.9 148
Show 22385+0038 UC 4782 88 51.5 150
Show 22329+0219 LDS4976 AB 271 14.6 151
Show 22218-0150 SCA 126 331 83.7 155
Show 22183-0022 HDS3160 119 1.3 159

 
 
WDS 22288-0001 : COMPONENTS
 
 
  A Ab
Ab pa=217.6°
sep=0.67"
 
B pa=157.3°
sep=2.39"
pa=141.5°
sep=2.14"
 
 
22288-0001 A
 
 
Name Zet1 Aqr Coord arcsec 2000 222849.81-000112.2 Mag 4.34 Spectral class F3IV (yellow-white)
PmRA 195.00 PmDE 34.0 Bayer Zeta 2 Aquarii Bayer name Zet2 Aqr
Flamsteed 55 Aquarii Flamsteed name 55 Aqr
CCDM
Ccdm 22288-0001 RComp Comp A Note1
Note2 Discov num DRAs 1.70 DDEs -13.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.4 Sp F2 PmNote *
PmRA 179 PmDE 13 Dm number -00 4365 Cat1 BD
Name2 -00 2868 Cat2 AGK2/3 HD 213052 M HD
ADS BDS A15971 M ADS BDS N IDS IDS 22237S0032A
HIC 110960
 
 
22288-0001 Ab
 
 
Coord arcsec 2000 222849.78+000111.7 Mag 11.3 Spectral class V PmRA 176.00
PmDE 13.0 Calc delta mag 6.96 Calc coord yes
 
 
22288-0001 B
 
 
Coord arcsec 2000 222849.87+000110.0 Mag 4.49 Spectral class V PmRA 176.00
PmDE 13.0 Bayer Zeta 1 Aquarii Bayer name Zet1 Aqr Flamsteed 55 Aquarii
Flamsteed name 55 Aqr Calc delta mag 0.15 Calc coord yes
CCDM
Ccdm 22288-0001 RComp Comp B Note1 *
Note2 @ Discov num STF2909 DRAs DDEs
R dRAs Year 1781 Theta Rho
Obs 99 Vmag 4.6 Sp F2 PmNote
PmRA 176 PmDE 13 Dm number Cat1
Name2 Cat2 HD 213051 M HD
ADS BDS A15971 M ADS BDS N N IDS IDS 22237S0032B
HIC 110960