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Current system
18455+0530
FIN 332 Aa,Ab


Nearby doubles
28' : 18437+0539
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J 527

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BAL2935

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TDT1014

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WOL 3AB

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TDT1051

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CRT 9AB

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HJ 866AB

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HDS2658

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TDT1050

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CRT 6AB

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TDT1057AB

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TDS 939

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BAL2933

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STT 360

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RAO 395



Selections
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18455+0530 FIN 332 Aa,Ab

 
 
18h 45m 28.36s +05° 30' 00.4" P.A. 142.00 sep 0.0 mag 6.91,7.31 Sp A1V+A1V dist. 188.68 pc (615.47 l.y.)
 
 
Coord 2000 18455+0530 Discov num FIN 332 Comp Aa,Ab Coord arcsec 2000 18 45 28.36 +05 30 00.4
Date first 1953 Date last 2021 Obs 75
Pa first 317 Pa last 141.7 P.A. Now (θ) 339.6°
Sep first 0.2 Sep last 0.014 Sep. Now (ρ) 0.032"
Mag pri 6.91 Mag sec 7.31 delta mag (ΔM) 0.4 Spectral class A1V+A1V (white/white)
Pri motion ra -005 Sec motion ra
Pri motion dec +003 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18455+0530 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 123886 18 45 28 +05 30 00 FIN 332 Aa,Ab 2021 75 142 0.0 6.91 7.31 0.40 Y <===
Show HD 173495 123886 18 45 28 +05 30 00 STF 2375 AB 2019 307 120 2.6 6.34 6.73 0.39 Y
Show 123886 18 45 28 +05 30 00 FIN 332 Ba,Bb 2021 58 324 0.1 7.48 7.48 0.00 Y
Quadruple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Serpens SAO 123886 HIP 92027 Tycho2 0456-01022-2
Gaia DR2 4285283042432285568 HD 173495 HR 7048 ADS 11640
BD BD+05 3941 Distance 188.68 Distance ly 615.47
 
 
ORBITAL ELEMENTS
 
 
Period (P)27.62y± 0.16 Periastron (T)1994y± 0.23 Semi-major axis (a)0.0911a± 0.0009
Eccentricity (e)0.82± 0.012 Inclination (i)107.9°± 1.2 Longitude of periastron (ω)4.6°± 4.1
Node (Ω)136°± 1.2 Notesn ReferenceTok2020k
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 321.1 0.123
2001 320.0 0.134
2002 319.0 0.143
2003 318.1 0.151
2004 317.3 0.157
2005 316.6 0.161
2006 315.8 0.164
2007 315.1 0.165
2008 314.5 0.165
2009 313.7 0.164
2010 313.0 0.161
2011 312.3 0.157
2012 311.5 0.151
2013 310.6 0.144
2014 309.6 0.135
2015 308.5 0.124
2016 307.1 0.111
2017 305.3 0.096
2018 302.8 0.079
2019 298.7 0.058
2020 288.9 0.033
2021 212.3 0.009
2022 90.4 0.009
2023 339.6 0.032
2024 329.8 0.059
2025 326.0 0.082
2026 323.6 0.100
2027 322.0 0.115
2028 320.7 0.127
2029 319.6 0.138
2030 318.7 0.147


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


 
  


wds18455%2B0530o.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18455+0530 FIN 332 Aa,Ab : NOTES
 
 
discov_num notes refcode
STF2375 This remarkable quadruple system is comprised of two close (0".14)
pairs of similar position angle, discovered by Finsen with his Fin1953c
eyepiece interferometer. Our 1982 observations (McAlister et al. McA1987b
1987) were made at lower magnification and included all four stars in
the field. The resulting overlapping autocorrelation peaks precluded
measurement of the Aab or Bab pairs directly, but did permit measures
of the AB; Aa,Bb; and Ab,Ba configurations. In later observations
made at higher magnification we observed the A and B components
separately, enabling measurement of Aa,Ab and Ba,Bb but not AB.
Listed in the first speckle catalogue as STF 2375 AB,CD. McA1984b
FIN 332 Aa,Ab: Listed in the first speckle catalogue as Fin 332 AB. McA1984b
FIN 332 Ba,Bb: Listed in the first speckle catalogue as Fin 332 CD. McA1984b
 
 
REFERENCES
 
 
refcode metd author reference
Fin1953c J - Finsen, W.S. 1953MNSSA..12...86F
Fin1953c MNASSA 12, 86, 1953
McA1984b Sc j McAlister, H.A. & Hartkopf, W.I. ...................
McA1984b Catalog of Interferometric Measurements of Binary Stars, CHARA Contrib. #1, 1984
McA1984b (previously unpublished KPNO 2.1m and 3.8m data)
McA1987b Sc j McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G. 1987AJ.....93..688M
McA1987b AJ 93, 688, 1987
Tok2020k orb - Tokovinin, A. 2020AstL...46..612T
Tok2020k Ast. Lett. 46, 612, 2020
 
 
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
18455+0530 FIN 332 Aa,Ab 1997 51 326 0.1 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2009 56 313 0.2 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2010 72 312 0.2 6.50 6.60 A1V+A1V NOD 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2015 77 308 0.1 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2018 78 303 0.1 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2019 79 297 0.0 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2020 80 68 0.0 6.91 7.31 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2021 75 142 0.0 6.91 7.31 A1V+A1V NO 184528.36+053000.4

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

 
 
WDS 18455+0530 FIN 332 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18455+0530 FIN 332 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18455+0530 : VIRTUAL EYEPIECE
 
 

18455+0530 STF2375A mag 6.34 Sp A1V 18455+0530 FIN 332Ab mag 7.31 Sp A1V 18455+0530 FIN 332B mag 7.48 Sp A1V 18455+0530 FIN 332Bb sep 0.1 P.A. 324.50 mag 7.48 Sp ... 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 18455+0530 : ALADIN DSS IMAGE @ 18h 45m 28.36s +05° 30' 00.4"
 
 
 
 
WDS 18455+0530 FIN 332 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18455+0530 FIN 332Aa,Ab distance=0' 18437+0539 STT 361 distance=28' 18465+0504 KPP4120 distance=31' 18429+0545 BU 136 distance=42' 18428+0541 TOK 324 distance=42' 18433+0502 J 527 distance=43' 18454+0444 BAL2935 distance=46' 18425+0518 TDT1014 distance=46' 18427+0556 WOL 3AB distance=49' 18427+0556 CRT 11AC distance=49' 18427+0556 CRT 11AD distance=49' 18427+0556 CRT 11AE distance=49' 18427+0556 CRT 11AF distance=49' 18427+0556 CRT 11AG distance=49' 18427+0556 CRT 11AH distance=49' 18427+0556 CRT 11AI distance=49' 18427+0556 CRT 11AJ distance=49' 18427+0556 CRT 11AK distance=49' 18427+0556 CRT 11AL distance=49' 18427+0556 CRT 11AM distance=49' 18427+0556 CRT 11AN distance=49' 18427+0556 CRT 11AO distance=49' 18427+0556 CRT 11AP distance=49' 18427+0556 CRT 11AQ distance=49' 18427+0556 CRT 11AR distance=49' 18427+0556 CRT 11AS distance=49' 18427+0556 CRT 11AT distance=49' 18427+0556 CRT 11AU distance=49' 18427+0556 CRT 11AV distance=49' 18427+0556 CRT 11A,Wa distance=49' 18427+0556 CRT 11A,Wb distance=49' 18427+0556 CRT 11A,Wc distance=49' 18427+0556 CRT 11A,Wd distance=49' 18427+0556 CRT 11A,We distance=49' 18427+0556 CRT 11A,Wf distance=49' 18427+0556 CRT 11A,Wg distance=49' 18427+0556 CRT 11A,Wh distance=49' 18427+0556 CRT 11A,Wi distance=49' 18427+0556 CRT 11A,Wj distance=49' 18427+0556 CRT 11A,Wk distance=49' 18427+0556 CRT 11A,Wl distance=49' 18427+0556 CRT 11A,Wm distance=49' 18427+0556 CRT 11A,Wn distance=49' 18427+0556 CRT 11A,Wo distance=49' 18427+0556 CRT 11A,Wp distance=49' 18468+0443 TDT1051 distance=52' 18436+0444 A 357 distance=54' 18431+0612 CRT 9AB distance=55' 18431+0612 CRT 9AC distance=55' 18431+0612 CRT 9AD distance=55' 18431+0612 CRT 9AE distance=55' 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 18455+0530 FIN 332 Aa,Ab 142 0.0
Show 18455+0530 STF2375 AB 120 2.6
Show 18455+0530 FIN 332 Ba,Bb 324 0.1
Show 18437+0539 STT 361 172 22.6 28
Show 18465+0504 KPP4120 1 1.8 31
Show 18429+0545 BU 136 7 4.6 42
Show 18428+0541 TOK 324 246 222.4 42
Show 18433+0502 J 527 40 3.2 43
Show 18454+0444 BAL2935 161 5.8 46
Show 18425+0518 TDT1014 339 0.7 46
Show 18427+0556 WOL 3 AB 307 2.5 49
Show 18427+0556 CRT 11 AC 163 3.1 49
Show 18427+0556 CRT 11 AD 223 4.1 49
Show 18427+0556 CRT 11 AE 217 7.6 49
Show 18427+0556 CRT 11 AF 56 8.0 49
Show 18427+0556 CRT 11 AG 263 8.8 49
Show 18427+0556 CRT 11 AH 5 10.4 49
Show 18427+0556 CRT 11 AI 113 10.8 49
Show 18427+0556 CRT 11 AJ 211 11.0 49
Show 18427+0556 CRT 11 AK 159 11.3 49
Show 18427+0556 CRT 11 AL 119 11.4 49
Show 18427+0556 CRT 11 AM 206 11.7 49
Show 18427+0556 CRT 11 AN 104 12.0 49
Show 18427+0556 CRT 11 AO 235 12.0 49
Show 18427+0556 CRT 11 AP 256 12.3 49
Show 18427+0556 CRT 11 AQ 178 12.8 49
Show 18427+0556 CRT 11 AR 13 12.8 49
Show 18427+0556 CRT 11 AS 4 13.4 49
Show 18427+0556 CRT 11 AT 293 13.5 49
Show 18427+0556 CRT 11 AU 94 14.5 49
Show 18427+0556 CRT 11 AV 102 14.8 49
Show 18427+0556 CRT 11 A,Wa 31 16.1 49
Show 18427+0556 CRT 11 A,Wb 164 16.4 49
Show 18427+0556 CRT 11 A,Wc 311 16.5 49
Show 18427+0556 CRT 11 A,Wd 237 16.7 49
Show 18427+0556 CRT 11 A,We 177 17.4 49
Show 18427+0556 CRT 11 A,Wf 50 17.6 49
Show 18427+0556 CRT 11 A,Wg 26 18.0 49
Show 18427+0556 CRT 11 A,Wh 221 18.2 49
Show 18427+0556 CRT 11 A,Wi 233 18.4 49
Show 18427+0556 CRT 11 A,Wj 77 18.8 49
Show 18427+0556 CRT 11 A,Wk 62 18.9 49
Show 18427+0556 CRT 11 A,Wl 292 18.9 49
Show 18427+0556 CRT 11 A,Wm 31 19.6 49
Show 18427+0556 CRT 11 A,Wn 120 19.6 49
Show 18427+0556 CRT 11 A,Wo 315 19.7 49
Show 18427+0556 CRT 11 A,Wp 332 20.0 49
Show 18468+0443 TDT1051 168 1.6 52
Show 18436+0444 A 357 71 0.6 54
Show 18431+0612 CRT 9 AB 271 4.4 55
Show 18431+0612 CRT 9 AC 258 4.6 55

 
 
WDS 18455+0530 : COMPONENTS
 
 
  A Ab B
Ab pa=141.8°
sep=0.01"
 
B pa=0.0°
sep=0.00"
pa=321.8°
sep=0.01"
 
Bb pa=324.5°
sep=0.12"
pa=324.3°
sep=0.14"
pa=324.5°
sep=0.12"
 
 
18455+0530 A
 
 
Name HD 173495 Coord arcsec 2000 184528.36+053000.4 Mag 6.34 Spectral class A1V (white)
PmRA 9.00 PmDE -3.0 SAO 123886 HIP 92027
Tycho2 0456-01022-2 HD 173495 HR 7048 GC 25674
ADS 11640 BD BD+05 3941
Tycho2
Tycho2 0456-01022-2 Pflag P RAmdeg 281.36838204 DEmdeg 5.50000042
PmRA 9.4 PmDE -2.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.0 E pmDE 1.9 EpRAm 1991.76 EpDEm 1991.68
Num 5 Q RAmdeg 1.5 Q DEmdeg 0.5 Q pmRA 1.5
Q pmDE 0.5 BTmag 6.375 E BTmag 0.014 VTmag 6.338
E VTmag 0.010 Prox 25 TYC T HIP 92027
CCDM A RAdeg 281.36815306 DEdeg 5.50012167 EpRA 1990 1.82
EpDE 1990 1.74 E RAdeg 3.8 E DEdeg 4.2 Posflg D
Corr 0.1
SAO
SAO 123886 DelFlag RA1950 PmRA1950 0.0008
DE1950 PmDE1950 -0.01 Vmag 5.7 SpType A0
Double code Source 70 CatNum 25674 DM BD+05 3941
DMcomp BDsup HD 173495 M HD 0
GC 25674 RA1950rad 4.90007521 DE1950rad 0.09505659 PmRA2000 0.001
PmDE2000 -0.011
Hipparcos
Catalog H HIP 92027 Proxy H RAhms 18 45 28.36
DEdms +05 30 00.4 Vmag 5.82 VarFlag R Vmag G
RAdeg 281.368 DEdeg 5.50012 AstroRef A Plx 4.6
CCDM 18455+0530 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual B M HIP
Theta Rho HD 173495 BD BD+05 3941
CD CP Dm number +05 3941 VIred 0.06
SpType A1V R SpType Coord arcsec 2000 184528.36+053000.4
Hipparcos 2
HIP 92027 Sn 15 So 3 Nc 3
RArad 4.9108006148 DErad 0.0959952549 Plx 5.3 PmRA 14.32
PmDE 0.16 E RArad 0.72 E DErad 0.64 E Plx 0.85
E pmRA 1.04 E pmDE 0.87 Hpmag 5.8291 E Hpmag 0.0008
SHp 0.005 VA 0 BV 0.041 E BV 0.006
VI 0.06
CCDM
Ccdm 18455+0530 RComp Comp A Note1
Note2 Discov num DRAs -1.55 DDEs 0.0
R dRAs 10 Year Theta Rho
Obs 4 Vmag 6.5 Sp A0 PmNote *
PmRA 27 PmDE -1 Dm number +05 3941 Cat1 BD
Name2 +05 2590 Cat2 AGK2/3 HD 173495 M HD
ADS BDS A11640 M ADS BDS N IDS IDS 18406N0524A
HIC 92027
 
 
18455+0530 Ab
 
 
Coord arcsec 2000 184528.36+053000.4 Mag 7.31 Spectral class A1V (white) Calc delta mag 0.4
Calc coord yes
 
 
18455+0530 B
 
 
Coord arcsec 2000 184528.36+053000.4 Coord calc 184528.51+052959.1 Mag 7.48 Mag composta 6.73
Spectral class A1V (white) PmRA 9.00 PmDE -3.0 Calc delta mag 0.57
 
 
18455+0530 Bb
 
 
Coord arcsec 2000 184528.36+053000.5 Mag 7.48 Spectral class ... PmRA 9.00
PmDE -3.0 Calc delta mag 0.57 Calc coord yes