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Doubles in session


Current system
22237+2051
STF 2900 AB
33 Peg


Nearby doubles
45' : 22223+2131
HU 384

46' : 22231+2136
TDT3500

47' : 22242+2005
UC 4737

48' : 22230+2137
UC 4730

58' : 22246+1955
PTF 9

59' : 22196+2107
HU 383

61' : 22280+2046
TDT3534

63' : 22259+1958
PTF 10

63' : 22192+2050
GRV 563

63' : 22223+2151
TDT3493

66' : 22196+2122
LDS4956

67' : 22221+2155
J 2578

72' : 22230+2202
SLN 44

72' : 22200+2002
UC 4717

73' : 22191+2000
LDS1492

73' : 22281+2128
SLW1275

73' : 22259+1945
UC 4743

79' : 22182+2036
BRT2505

79' : 22256+1937
CVR 945

95' : 22265+1925
HU 596

96' : 22230+1916
KPP 510

97' : 22178+1959
WFC 240

99' : 22247+1914
HU 493

99' : 22196+2212
HJ 1749AB

102' : 22239+2232
HU 385

102' : 22308+2103
CVR 264



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.

22237+2051 STF 2900 AB (33 Peg)

 
 
22h 23m 39.56s +20° 50' 54.0" P.A. 1.00 sep 1.0 mag 6.28,9.18 Sp F7IV dist. 33.7 pc (109.93 l.y.)
 
 
Coord 2000 22237+2051 Discov num STF2900 Comp AB Coord arcsec 2000 22 23 39.56 +20 50 54.0
Date first 1831 Date last 2017 Obs 132
Pa first 182 Pa last 0.9 P.A. Now (θ) 180.8°
Sep first 3.1 Sep last 0.972 Sep. Now (ρ) 1.212"
Mag pri 6.28 Mag sec 9.18 delta mag (ΔM) 2.9 Spectral class F7IV (yellow-white)
Pri motion ra +335 Sec motion ra
Pri motion dec -015 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
22237+2051 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 33 Peg 90462 22 23 40 +20 50 54 STF 2900 AB 2017 132 1 1.0 6.28 9.18 2.90 Y <===
Show 90462 22 23 40 +20 50 54 STF 2900 AC 2015 98 306 92.7 6.28 8.54 2.26
Show 22 23 35 +20 51 48 COU 139 CD 2013 27 88 0.3 8.54 10.70 2.16
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 33 Peg Constellation Pegasus SAO 90462 HIP 110548
Tycho2 1694-01747-1 HD 212395 HR 8532 GC 31300
ADS 15896 BD BD+20 5139 Flamsteed 33 Pegasi Flamsteed name 33 Peg
Distance 33.7 Distance ly 109.93
 
 
ORBITAL ELEMENTS
 
 
Period (P)407.1y Periastron (T)2000.07y Semi-major axis (a)2.03a
Eccentricity (e)0.827 Inclination (i)91.5° Longitude of periastron (ω)220.6°
Node (Ω)180.4° Notesn ReferenceTok2018b
Equinox2000 Last observation2017 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 359.2 0.271
2001 358.2 0.200
2002 356.0 0.121
2003 344.1 0.037
2004 193.3 0.051
2005 185.5 0.135
2006 183.7 0.217
2007 182.9 0.296
2008 182.4 0.372
2009 182.0 0.444
2010 181.8 0.514
2011 181.6 0.581
2012 181.5 0.645
2013 181.4 0.706
2014 181.3 0.765
2015 181.2 0.822
2016 181.1 0.877
2017 181.0 0.929
2018 181.0 0.980
2019 180.9 1.030
2020 180.9 1.078
2021 180.8 1.124
2022 180.8 1.169
2023 180.8 1.212
2024 180.7 1.255
2025 180.7 1.296
2026 180.7 1.336
2027 180.6 1.375
2028 180.6 1.413
2029 180.6 1.450
2030 180.6 1.486


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


 
  


wds22237%2B2051a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 22237+2051 STF 2900 AB (33 Peg) : NOTES
 
 
discov_num notes refcode
STF2900 33 Peg.
STTA233. STFB 12.
AB: Additional notes may be found in Couteau (1955). Cou1955c
AC: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
AC: H 5 99. MEv2010
COU 139 CD: This may be the pair observed by Kuiper in 1934 and "suspected of Kui1961b
being a very close, equal pair of 0".1". Star was not retained in the
lists of Kuiper, nor in the IDS. Cou1967a
STF2900 AB: Rectilinear solution by Hartkopf & Mason (2013). Hrt2013b
 
 
REFERENCES
 
 
refcode metd author reference
Cou1955c Ma - Couteau, P. 1955JO.....38..238C
Cou1955c +Mc J. Obs. 38, 238, 1955
Cou1967a Ma - Couteau, P. 1967JO.....50...33C
Cou1967a +Pa J. Obs. 50, 33-39, 1967
Hrt2013b orb - Hartkopf, W.I. & Mason, B.D. 2013IAUDS.181....1H
Hrt2013b +lin Inf. Circ. 181, 1, 2013
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
Kui1961b Ma j Kuiper, G.P. 1961ApJS....6....1K
Kui1961b ApJS 6, 1, 1961
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Tok2018b orb j Tokovinin, A. 2018IAUDS.194....1T
Tok2018b Inf. Circ. 194, 1, 2018
 
 
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
22237+2051 STF2900 AB 1995 113 1 0.4 6.39 9.29 F7IV NLD 222339.36+205053.8
22237+2051 STF2900 AB 2008 119 2 0.4 6.39 9.29 F7IV NLD 222339.36+205053.8
22237+2051 STF2900 AB 2012 118 183 0.7 6.28 9.18 F7IV NLD 222339.36+205053.8
22237+2051 STF2900 AB 2013 119 1 0.7 6.28 9.18 F7IV NL 222339.36+205053.8
22237+2051 STF2900 AB 2015 121 0 0.7 6.28 9.18 F7IV NL 222339.56+205054.0
22237+2051 STF2900 AB 2017 123 181 1.0 6.28 9.18 F7IV NC 222339.56+205054.0

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

 
 
WDS 22237+2051 STF 2900 AB (33 Peg) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 23/09/24 Diego Vercelli easy separated 300  

 
 
WDS 22237+2051 STF 2900 AB (33 Peg) : MEASURES
 
 
No records found.

 
 
WDS 22237+2051 (33 Peg) : VIRTUAL EYEPIECE
 
 

22237+2051 STF2900A mag 6.28 Sp F7IV 22237+2051 STF2900B sep 1.0 P.A. 0.80 mag 9.18 22237+2051 COU 139C sep 89.0 P.A. 307.80 mag 8.54 Sp F0 22237+2051 COU 139D sep 88.8 P.A. 307.90 mag 10.7 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 22237+2051 (33 Peg) : ALADIN DSS IMAGE @ 22h 23m 39.56s +20° 50' 54.0"
 
 
 
 
WDS 22237+2051 STF 2900 AB (33 Peg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

22237+2051 STF2900AB distance=0' 22237+2051 COU 139CD distance=2' 22223+2131 HU 384 distance=45' 22231+2136 TDT3500 distance=46' 22242+2005 UC 4737 distance=47' 22230+2137 UC 4730 distance=48' 22246+1955 PTF 9 distance=58' 22196+2107 HU 383 distance=59' 22280+2046 TDT3534 distance=61' 22259+1958 PTF 10 distance=63' 22192+2050 GRV 563 distance=63' 22223+2151 TDT3493 distance=63' 22196+2122 LDS4956 distance=66' 22221+2155 J 2578 distance=67' 22230+2202 SLN 44 distance=72' 22200+2002 UC 4717 distance=72' 22191+2000 LDS1492 distance=73' 22281+2128 SLW1275 distance=73' 22259+1945 UC 4743 distance=73' 22182+2036 BRT2505 distance=79' 22256+1937 CVR 945 distance=79' 22265+1925 HU 596 distance=95' 22230+1916 KPP 510 distance=96' 22178+1959 WFC 240 distance=97' 22247+1914 HU 493 distance=99' 22196+2212 HJ 1749AB distance=99' 22196+2212 HJ 1749AC distance=99' 22196+2212 ABH 165AD distance=99' 22196+2212 ABH 165AE distance=99' 22239+2232 HU 385 distance=102' 22308+2103 CVR 264 distance=102' 22172+2006 CVR 936 distance=102' 22248+2233 HO 183AB distance=104' 22248+2233 HO 183AC distance=104' 22248+2233 LEP 106AD distance=104' 22311+2108 J 3170 distance=105' 22179+1946 UC 4708 distance=105' 22255+2234 HO 616 distance=107' 22176+2200 UC 4706 distance=110' 22306+1953 PTF 13 distance=114' 22249+2245 LDS1494 distance=116' 22292+1922 PTF 11 distance=119' 22267+2249 HJ 3115AB distance=126' 22267+2249 HJ 3115AC distance=126' 22267+2249 HJ 3115AD distance=126' 22234+2300 ROE 129BC distance=128' 22234+2300 ROE 129AB distance=129' 22323+2135 UC 4761 distance=130' 22261+2255 GRV 575 distance=130' 22254+1842 HJ 963AB distance=131' 22326+2014 LBU 21 distance=131' 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 22237+2051 STF2900 AB 1 1.0
Show 22237+2051 STF2900 AC 306 92.7
Show 22237+2051 COU 139 CD 88 0.3 2
Show 22223+2131 HU 384 339 0.2 45
Show 22231+2136 TDT3500 279 0.5 46
Show 22242+2005 UC 4737 219 39.1 47
Show 22230+2137 UC 4730 12 44.0 48
Show 22246+1955 PTF 9 34 4.5 58
Show 22196+2107 HU 383 29 0.4 59
Show 22280+2046 TDT3534 266 0.9 61
Show 22259+1958 PTF 10 333 1.6 63
Show 22192+2050 GRV 563 207 64.9 63
Show 22223+2151 TDT3493 290 1.2 63
Show 22196+2122 LDS4956 283 83.1 66
Show 22221+2155 J 2578 351 2.1 67
Show 22230+2202 SLN 44 168 6.6 72
Show 22200+2002 UC 4717 260 91.9 72
Show 22191+2000 LDS1492 260 91.7 73
Show 22281+2128 SLW1275 135 59.6 73
Show 22259+1945 UC 4743 188 64.5 73
Show 22182+2036 BRT2505 206 4.4 79
Show 22256+1937 CVR 945 270 18.8 79
Show 22265+1925 HU 596 197 1.1 95
Show 22230+1916 KPP 510 251 3.7 96
Show 22178+1959 WFC 240 267 11.7 97
Show 22247+1914 HU 493 171 0.8 99
Show 22196+2212 HJ 1749 AB 253 15.6 99
Show 22196+2212 HJ 1749 AC 48 20.0 99
Show 22196+2212 ABH 165 AD 234 64.0 99
Show 22196+2212 ABH 165 AE 144 97.0 99
Show 22239+2232 HU 385 80 1.5 102
Show 22308+2103 CVR 264 8 29.2 102
Show 22172+2006 CVR 936 83 13.5 102
Show 22248+2233 HO 183 AB 221 2.5 104
Show 22248+2233 HO 183 AC 52 74.0 104
Show 22248+2233 LEP 106 AD 197 147.2 104
Show 22311+2108 J 3170 193 6.0 105
Show 22179+1946 UC 4708 57.2 105
Show 22255+2234 HO 616 342 20.2 107
Show 22176+2200 UC 4706 260 61.0 110
Show 22306+1953 PTF 13 25 0.9 114
Show 22249+2245 LDS1494 115 3.7 116
Show 22292+1922 PTF 11 178 4.1 119
Show 22267+2249 HJ 3115 AB 266 29.0 126
Show 22267+2249 HJ 3115 AC 332 43.1 126
Show 22267+2249 HJ 3115 AD 94 57.5 126
Show 22234+2300 ROE 129 BC 297 6.2 128
Show 22234+2300 ROE 129 AB 206 90.2 129
Show 22323+2135 UC 4761 298 22.5 130
Show 22261+2255 GRV 575 113 59.4 130
Show 22254+1842 HJ 963 AB 60 7.2 131

 
 
WDS 22237+2051 : COMPONENTS
 
 
  A B C
B pa=0.8°
sep=0.97"
 
C pa=307.8°
sep=89.00"
pa=307.3°
sep=88.42"
 
D pa=307.9°
sep=88.77"
pa=307.4°
sep=88.19"
pa=87.6°
sep=0.30"
 
 
22237+2051 A
 
 
Name 33 Peg Coord arcsec 2000 222339.56+205054.0 Mag 6.28 Spectral class F7IV (yellow-white)
PmRA 335.00 PmDE -15.0 SAO 90462 HIP 110548
Tycho2 1694-01747-1 HD 212395 HR 8532 GC 31300
BD BD+20 5139 Flamsteed 33 Pegasi Flamsteed name 33 Peg
Tycho2
Tycho2 1694-01747-1 Pflag RAmdeg 335.91485302 DEmdeg 20.84822869
PmRA 335.3 PmDE -17.1 E RAmdeg 4 E DEmdeg 4
E pmRA 1.0 E pmDE 0.9 EpRAm 1991.48 EpDEm 1991.26
Num 15 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.2 BTmag 6.803 E BTmag 0.015 VTmag 6.276
E VTmag 0.010 Prox 868 TYC T HIP 110548
CCDM AB RAdeg 335.91403472 DEdeg 20.84826889 EpRA 1990 1.79
EpDE 1990 1.56 E RAdeg 3.7 E DEdeg 4.3 Posflg P
Corr -0.1
SAO
SAO 90462 DelFlag RA1950 PmRA1950 0.024
DE1950 PmDE1950 -0.011 Vmag 6.1 SpType F5
Double code Source 70 CatNum 31300 DM BD+20 5139
DMcomp BDsup HD 212395 M HD 0
GC 31300 RA1950rad 5.85231157 DE1950rad 0.35945089 PmRA2000 0.024
PmDE2000 -0.015
Hipparcos
Catalog H HIP 110548 Proxy H RAhms 22 23 39.36
DEdms +20 50 53.8 Vmag 6.2 VarFlag R Vmag H
RAdeg 335.914 DEdeg 20.8483 AstroRef A Plx 29.5
CCDM 22236+2051 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 0 Rho 0.417 HD 212395 BD BD+20 5139
CD CP Dm number +20 5139 VIred 0.58
SpType F7V R SpType Coord arcsec 2000 222339.36+205053.8
Hipparcos 2
HIP 110548 Sn 15 So 3 Nc 2
RArad 5.86280498 DErad 0.3638708674 Plx 29.67 PmRA 334.55
PmDE -14.86 E RArad 0.55 E DErad 0.47 E Plx 0.65
E pmRA 0.64 E pmDE 0.57 Hpmag 6.3175 E Hpmag 0.0013
SHp 0.008 VA 0 BV 0.518 E BV 0.004
VI 0.59
 
 
22237+2051 B
 
 
Coord arcsec 2000 222339.56+205055.0 Mag 9.18 Calc delta mag 2.9 Calc coord yes
 
 
22237+2051 C
 
 
Coord arcsec 2000 222334.54+205148.5 Coord calc 222334.54+205148.5 Mag 8.54 Spectral class F0 (yellow-white)
PmRA 25.00 PmDE -17.0 HIP 110541 Tycho2 1694-01805-1
BD BD+20 5138 Calc delta mag 2.26
Tycho2
Tycho2 1694-01805-1 Pflag RAmdeg 335.89397152 DEmdeg 20.86343995
PmRA 14.4 PmDE -12.6 E RAmdeg 8 E DEmdeg 9
E pmRA 1.1 E pmDE 1.0 EpRAm 1990.81 EpDEm 1990.27
Num 10 Q RAmdeg 1.1 Q DEmdeg 0.9 Q pmRA 1.1
Q pmDE 0.9 BTmag 8.979 E BTmag 0.020 VTmag 8.543
E VTmag 0.016 Prox 868 TYC T HIP 110541
CCDM CD RAdeg 335.89393639 DEdeg 20.86346861 EpRA 1990 1.77
EpDE 1990 1.60 E RAdeg 7.6 E DEdeg 9.4 Posflg P
Corr -0.3
Hipparcos
Catalog H HIP 110541 Proxy H RAhms 22 23 34.54
DEdms +20 51 48.5 Vmag 8.51 VarFlag R Vmag H
RAdeg 335.894 DEdeg 20.8635 AstroRef C Plx 6.55
CCDM 22236+2051 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP CD
Theta 73 Rho 0.381 HD BD BD+20 5138
CD CP Dm number +20 5138 VIred 0.45
SpType F0 R SpType Coord arcsec 2000 222334.54+205148.5
Hipparcos 2
HIP 110541 Sn 15 So 3 Nc 2
RArad 5.8624548637 DErad 0.3641361916 Plx 6.38 PmRA 15.82
PmDE -11.9 E RArad 0.98 E DErad 0.7 E Plx 1.15
E pmRA 1.19 E pmDE 0.96 Hpmag 8.5984 E Hpmag 0.0025
SHp 0.014 VA 0 BV 0.39 E BV 0.018
VI 0.46
 
 
22237+2051 D
 
 
Coord arcsec 2000 222334.56+205148.5 Mag 10.7 Calc delta mag 4.42 Calc coord yes