stampa
Login

Keep tracks of you favourite doubles.
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
23317+1956
WIR 1 AB
EQ Peg


Nearby doubles
15' : 23322+1942
COU 340

21' : 23318+2016
UC 4975

29' : 23337+1944
CVR 998

47' : 23305+1914
TDT4074

47' : 23305+2038
CVR 993

58' : 23347+1914
COU 341

59' : 23278+1948
TDT4048

60' : 23283+2028
KPP1191

68' : 23361+2027
TDT4118

71' : 23311+1847
STF3020

73' : 23309+1845
COU2712

74' : 23269+2016
TDT4038

75' : 23369+2016
HJ 988

79' : 23263+1952
CLZ 90

83' : 23300+2114
UC 4964

83' : 23363+1902
BRT2516

84' : 23371+1918
J 625

85' : 23300+2117
GRV 668AB

91' : 23353+1839
LDS5103

94' : 23268+2057
COU 241

97' : 23386+1959
COU 342

99' : 23311+1818
COU 339

101' : 23374+1854
TDS1218

106' : 23324+1811
CVR 995

107' : 23341+1814
BRT2515

108' : 23361+1827
YSC 229



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.

23317+1956 WIR 1 AB (EQ Peg)

 
 
23h 31m 52.24s +19° 56' 14.0" P.A. 73.00 sep 5.3 mag 10.52,12.40 Sp M3.5V+M5V dist. 6.18 pc (20.16 l.y.)
 
 
Coord 2000 23317+1956 Discov num WIR   1 Comp AB Coord arcsec 2000 23 31 52.24 +19 56 14.0
Date first 1941 Date last 2020 Obs 75
Pa first 183 Pa last 73.2 P.A. Now (θ) 73.2°
Sep first 3.5 Sep last 5.286 Sep. Now (ρ) 5.286"
Mag pri 10.52 Mag sec 12.40 delta mag (ΔM) 1.88 Spectral class M3.5V+M5V (red/red)
Pri motion ra +554 Sec motion ra -078
Pri motion dec -063 Sec motion dec +108
Notes N O (See Notes, Orbital solution)
rPM=1.174
This double is physical.
 
 
23317+1956 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show EQ Peg 23 31 52 +19 56 14 WIR 1 AB 2020 75 73 5.3 10.52 12.40 1.88 Y <===
Show 23 31 52 +19 56 14 LMP 24 AC 2020 15 13 30.2 10.52 12.33 1.81
Show 23 31 52 +19 56 14 LMP 24 AD 2020 13 337 38.1 10.52 13.62 3.10
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name EQ Peg Constellation Pegasus HIP 116132 Tycho2 1723-00023-1
GL Gl 896A BD BD+19 5116 Distance 6.18 Distance ly 20.16
 
 
ORBITAL ELEMENTS
 
 
Period (P)182.791255y Periastron (T)1887.66538y Semi-major axis (a)4.7276a
Eccentricity (e)0.299996 Inclination (i)127.6685° Longitude of periastron (ω)119.7912°
Node (Ω)67.9962° Notesn ReferenceKpp2020f
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 92.2 5.235
2001 91.3 5.258
2002 90.4 5.279
2003 89.4 5.298
2004 88.5 5.315
2005 87.6 5.331
2006 86.7 5.344
2007 85.8 5.355
2008 84.9 5.363
2009 84.0 5.370
2010 83.2 5.374
2011 82.3 5.376
2012 81.4 5.375
2013 80.5 5.372
2014 79.6 5.366
2015 78.7 5.358
2016 77.8 5.347
2017 76.9 5.333
2018 76.0 5.317
2019 75.1 5.297
2020 74.2 5.275
2021 73.3 5.249
2022 72.3 5.221
2023 71.4 5.189
2024 70.4 5.155
2025 69.4 5.117
2026 68.5 5.076
2027 67.4 5.031
2028 66.4 4.983
2029 65.4 4.932
2030 64.3 4.877


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


 
  


wds23317%2B1956d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 23317+1956 WIR 1 AB (EQ Peg) : NOTES
 
 
discov_num notes refcode
WIR 1 This is the flare star EQ Peg. Component B is suspected to be the
source of the flares, although both components may be flare stars.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AB: Additional notes may be found in Wilson (1954). WRH1954a
LMP 24 AC: Rectilinear solution by Mason & Hartkopf (2016). Msn2016a
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Kpp2020f Hg+ j Knapp, W.R.A. 2020JDSO...16..229K
Kpp2020f +C JDSO 16, 229, 2020
Kpp2020f +orb
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
WRH1954a J j Wilson, R.H. 1954AJ.....59..132W
WRH1954a +Ma AJ 59, 132, 1954
 
 
DISCOVERER
 
 
idgroup discov author
1 LMP Lampens, P. & Strigachev, A.
21 WIR Wirtanen, C.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23317+1956 WIR 1 AB 2007 51 86 5.4 10.52 12.40 M4+M5 NO V 233151.83+195614.7
23317+1956 WIR 1 AB 2010 53 82 5.3 10.52 12.40 M4+M5 NO 233152.17+195614.2
23317+1956 WIR 1 AB 2011 58 82 5.4 10.52 12.40 M4 M5 NO 233152.17+195614.2
23317+1956 WIR 1 AB 2012 61 80 5.5 10.52 12.40 M3.5V+M5V NO 233152.17+195614.2
23317+1956 WIR 1 AB 2013 65 79 5.1 10.52 12.40 M3.5V+M5V NO 233152.24+195614.0
23317+1956 WIR 1 AB 2015 68 78 5.4 10.52 12.40 M3.5V+M5V NO 233152.24+195614.0
23317+1956 WIR 1 AB 2017 72 76 5.4 10.52 12.40 M3.5V+M5V NO 233152.24+195614.0
23317+1956 WIR 1 AB 2020 73 73 5.3 10.52 12.40 M3.5V+M5V NO 233152.24+195614.0

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

 
 
WDS 23317+1956 WIR 1 AB (EQ Peg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 23317+1956 WIR 1 AB (EQ Peg) : MEASURES
 
 
No records found.

 
 
WDS 23317+1956 (EQ Peg) : VIRTUAL EYEPIECE
 
 

23317+1956 WIR 1A mag 10.52 Sp M3.5V 23317+1956 WIR 1B sep 5.0 P.A. 72.20 mag 12.4 Sp M5V 23317+1956 LMP 24C sep 30.1 P.A. 11.90 mag 12.33 23317+1956 LMP 24D sep 37.7 P.A. 338.60 mag 13.62 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 23317+1956 (EQ Peg) : ALADIN DSS IMAGE @ 23h 31m 52.24s +19° 56' 14.0"
 
 
 
 
WDS 23317+1956 WIR 1 AB (EQ Peg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23317+1956 WIR 1AB distance=0' 23322+1942 COU 340 distance=15' 23318+2016 UC 4975 distance=21' 23337+1944 CVR 998 distance=29' 23305+1914 TDT4074 distance=47' 23305+2038 CVR 993 distance=47' 23347+1914 COU 341 distance=58' 23278+1948 TDT4048 distance=59' 23283+2028 KPP1191 distance=60' 23361+2027 TDT4118 distance=68' 23311+1847 STF3020 distance=71' 23309+1845 COU2712 distance=73' 23269+2016 TDT4038 distance=74' 23369+2016 HJ 988 distance=75' 23263+1952 CLZ 90 distance=79' 23300+2114 UC 4964 distance=83' 23363+1902 BRT2516 distance=83' 23371+1918 J 625 distance=84' 23300+2117 GRV 668AB distance=85' 23300+2117 GRV 668AC distance=85' 23353+1839 LDS5103 distance=91' 23268+2057 COU 241 distance=94' 23386+1959 COU 342 distance=97' 23311+1818 COU 339 distance=99' 23374+1854 TDS1218 distance=101' 23324+1811 CVR 995 distance=106' 23341+1814 BRT2515 distance=107' 23361+1827 YSC 229 distance=108' 23251+2052 UC 4946 distance=110' 23390+1911 GWP3338 distance=111' 23318+2148 COU 243 distance=113' 23371+2123 SLN 99 distance=114' 23389+2101 LDS5108AB distance=119' 23389+2101 LDS5108AC distance=119' 23403+1945 HO 302AB distance=119' 23403+1945 HO 302BC distance=120' 23324+2159 HDS3354 distance=124' 23378+2128 CLZ 93 distance=124' 23325+2200 HLM 41AB distance=125' 23325+2200 HLM 41AC distance=125' 23379+1824 KUI 117AB distance=127' 23379+1824 DRS 31Aa,Ab distance=127' 23405+1924 LDS5111 distance=128' 23409+2022 HO 303AB distance=130' 23409+2022 HO 303AC distance=130' 23336+1749 LOS 1AB distance=130' 23336+1749 HO 655AC distance=130' 23328+2205 ELS 6 distance=130' 23393+2116 COU 33 distance=133' 23228+2034 TOK 704Ba,Bb distance=133' 23228+2034 STF3007AB distance=133' 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 23317+1956 WIR 1 AB 73 5.3
Show 23317+1956 LMP 24 AC 13 30.2
Show 23317+1956 LMP 24 AD 337 38.1
Show 23322+1942 COU 340 55 0.3 15
Show 23318+2016 UC 4975 315 27.5 21
Show 23337+1944 CVR 998 169 22.4 29
Show 23305+1914 TDT4074 56 2.4 47
Show 23305+2038 CVR 993 279 9.6 47
Show 23347+1914 COU 341 119 0.8 58
Show 23278+1948 TDT4048 235 0.9 59
Show 23283+2028 KPP1191 55 9.3 60
Show 23361+2027 TDT4118 3 0.6 68
Show 23311+1847 STF3020 99 2.3 71
Show 23309+1845 COU2712 42 27.9 73
Show 23269+2016 TDT4038 62 0.6 74
Show 23369+2016 HJ 988 241 9.1 75
Show 23263+1952 CLZ 90 181 31.2 79
Show 23300+2114 UC 4964 262 32.6 83
Show 23363+1902 BRT2516 228 4.1 83
Show 23371+1918 J 625 257 2.9 84
Show 23300+2117 GRV 668 AB 331 6.2 85
Show 23300+2117 GRV 668 AC 322 78.6 85
Show 23353+1839 LDS5103 12 156.6 91
Show 23268+2057 COU 241 12 3.4 94
Show 23386+1959 COU 342 31 0.9 97
Show 23311+1818 COU 339 83 2.1 99
Show 23374+1854 TDS1218 315 1.5 101
Show 23324+1811 CVR 995 231 20.5 106
Show 23341+1814 BRT2515 163 3.9 107
Show 23361+1827 YSC 229 345 0.0 108
Show 23251+2052 UC 4946 132 28.1 110
Show 23390+1911 GWP3338 82 13.9 111
Show 23318+2148 COU 243 344 0.9 113
Show 23371+2123 SLN 99 100 14.1 114
Show 23389+2101 LDS5108 AB 111 9.5 119
Show 23389+2101 LDS5108 AC 137 14.8 119
Show 23403+1945 HO 302 AB 29 79.9 119
Show 23403+1945 HO 302 BC 72 7.7 120
Show 23324+2159 HDS3354 40 4.1 124
Show 23378+2128 CLZ 93 4 19.6 124
Show 23325+2200 HLM 41 AB 290 7.7 125
Show 23325+2200 HLM 41 AC 35 23.8 125
Show 23379+1824 KUI 117 AB 245 27.5 127
Show 23379+1824 DRS 31 Aa,Ab 169 0.9 127
Show 23405+1924 LDS5111 133 277.6 128
Show 23409+2022 HO 303 AB 187 1.0 130
Show 23409+2022 HO 303 AC 351 128.1 130
Show 23336+1749 LOS 1 AB 181 7.3 130
Show 23336+1749 HO 655 AC 244 36.4 130
Show 23328+2205 ELS 6 4 6.4 130
Show 23393+2116 COU 33 326 5.4 133

 
 
WDS 23317+1956 : COMPONENTS
 
 
  A B C
B pa=72.2°
sep=5.00"
 
C pa=11.9°
sep=30.13"
pa=2.9°
sep=27.99"
 
D pa=338.6°
sep=37.73"
pa=331.2°
sep=38.37"
pa=285.8°
sep=20.73"
 
 
23317+1956 A
 
 
Name EQ Peg Coord arcsec 2000 233152.24+195614.0 Mag 10.52 Spectral class M3.5V (red)
PmRA 554.00 PmDE -63.0 HIP 116132 Tycho2 1723-00023-1
BD BD+19 5116
Tycho2
Tycho2 1723-00023-1 Pflag RAmdeg 352.96739634 DEmdeg 19.93730731
PmRA 543.2 PmDE -44.6 E RAmdeg 26 E DEmdeg 33
E pmRA 1.6 E pmDE 1.6 EpRAm 1987.91 EpDEm 1986.20
Num 4 Q RAmdeg 4.1 Q DEmdeg 3.0 Q pmRA 3.9
Q pmDE 2.9 BTmag 12.269 E BTmag 0.132 VTmag 10.518
E VTmag 0.037 Prox 50 TYC T HIP 116132
CCDM A RAdeg 352.96604278 DEdeg 19.93739833 EpRA 1990 1.66
EpDE 1990 1.52 E RAdeg 29.1 E DEdeg 36.1 Posflg
Corr -0.4
Hipparcos
Catalog H HIP 116132 Proxy H RAhms 23 31 51.83
DEdms +19 56 14.7 Vmag 10.05 VarFlag R Vmag H
RAdeg 352.966 DEdeg 19.9374 AstroRef A Plx 160.06
CCDM 23319+1956 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 101 Rho 5.029 HD BD BD+19 5116
CD CP Dm number +19 5116 VIred 3.6
SpType M6Ve R SpType Coord arcsec 2000 233151.83+195614.7
Hipparcos 2
HIP 116132 Sn 15 So 3 Nc 2
RArad 6.1604184703 DErad 0.3479734647 Plx 161.76 PmRA 554.64
PmDE -60.43 E RArad 1.25 E DErad 1.11 E Plx 1.66
E pmRA 1.4 E pmDE 1.08 Hpmag 10.1155 E Hpmag 0.0027
SHp 0.033 VA 0 BV 1.19 E BV 0.51
VI 2.19
 
 
23317+1956 B
 
 
Coord arcsec 2000 233152.58+195615.5 Mag 12.4 Spectral class M5V (red) PmRA -78.00
PmDE 108.0 Calc delta mag 1.88 Calc coord yes
 
 
23317+1956 C
 
 
Coord arcsec 2000 233152.68+195643.5 Mag 12.33 PmRA 12.00 PmDE 16.0
Tycho2 1723-00143-1 Calc delta mag 1.81 Calc coord yes
Tycho2
Tycho2 1723-00143-1 Pflag RAmdeg 352.97276365 DEmdeg 19.94499956
PmRA 8.5 PmDE 14.5 E RAmdeg 84 E DEmdeg 101
E pmRA 2.6 E pmDE 2.7 EpRAm 1978.37 EpDEm 1973.03
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 13.980 E BTmag 0.377 VTmag 12.234
E VTmag 0.167 Prox 334 TYC HIP
CCDM RAdeg 352.97274306 DEdeg 19.94496528 EpRA 1990 1.64
EpDE 1990 1.50 E RAdeg 90.8 E DEdeg 111.6 Posflg
Corr -0.4
 
 
23317+1956 D
 
 
Coord arcsec 2000 233151.26+195649.1 Mag 13.62 PmRA -22.00 PmDE 26.0
Calc delta mag 3.1 Calc coord yes