19091+3436 STF 2474 AB (HD 178911)

 
 
19h 09m 04.35s +34° 35' 59.9" P.A. 262.00 sep 16.0 mag 6.78,7.88 Sp G1V dist. 42.59 pc (138.93 l.y.)
 
 
Coord 2000 19091+3436 Discov num STF2474 Comp AB Coord arcsec 2000 19 09 04.35 +34 35 59.9
Date first 1823 Date last 2019 Obs 84
Pa first 260 Pa last 262 P.A. Now (θ) 262°
Sep first 17.1 Sep last 15.96 Sep. Now (ρ) 15.96"
Mag pri 6.78 Mag sec 7.88 delta mag (ΔM) 1.1 Spectral class G1V (yellow)
Pri motion ra +056 Sec motion ra +069
Pri motion dec +191 Sec motion dec +197
Notes N Z V (See Notes, Parallax indicates components are physical, Proper motion indicates physical)
rPM=0.069 (< 0.3, Physical double)
This double is physical.
 
 
19091+3436 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 67879 19 09 04 +34 35 60 CHR 84 Aa,Ab 2014 36 114 0.1 6.89 8.96 2.07 Y
Show HD 178911 67879 19 09 04 +34 35 60 STF 2474 AB 2019 84 262 16.0 6.78 7.88 1.10 <===
Show 67879 19 09 04 +34 35 60 WAL 105 AC 2017 5 126 97.5 6.78 11.42 4.64
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 178911 Constellation Lyra SAO 67879 HIP 94075
Tycho2 2648-02148-1 Gaia DR2 2044341077844183040 HD 178911 HR 7272
GC 26396 ADS 12101 DM BD+34 3439 BD BD+34 3438
Distance 42.59 Distance ly 138.93
 
 
WDS 19091+3436 STF 2474 AB (HD 178911) : NOTES
 
 
discov_num notes refcode
STF2474 B is BD+34 3438.
AB: NLTT 47474/47473 Chm2004
AB: B is exoplanet host, P=71.5d. Tok2014d
CHR 84 Aa,Ab: 1985.5232: This autocorrelogram was remeasured; the new results
are listed here.
The paper by Tokovinin et al. (2000) also includes a combined Tok2000a
spectroscopic/astrometric solution for orbital elements and masses.
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 5.43 +/- 2.10, 2.39, and 1.02 Msun, respectively. Mlk2012
Aa,Ab: SB2, P=3.540y. Tok2014d
Combined solution by Farrington et al. (2014) yields masses 0.802 +/-
0.055 and 0.622 +/- 0.053 Msun, as well as an orbital parallax 28.26
+/- 1.70 mas. CIA2014a
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
CIA2014a Kf j Farrington, C.D., ten Brummelaar, T.A., Mason, B.D., Hartkopf, W.I., Mourard, D., 2014AJ....148...48F
CIA2014a +Kc Moravveji, E., McAlister, H.A., Turner, N.H., Sturmann, L., & Sturmann, J.
CIA2014a +orb AJ 148, 48, 2014
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2000a S u Tokovinin, A.A., Griffin, R.F., Balega, Y.Y., Pluzhnik, E.A., & Udry, S. 2000AstL...26..116T
Tok2000a +orb SvAL 26, 116, 2000
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
3 STF Struve, F.G.W.
36 WAL Wallenquist, A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19091+3436 STF2474 AB 2007 66 263 15.7 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2008 67 263 16.0 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2010 68 263 15.5 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2012 69 263 15.9 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2013 70 262 16.0 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2014 76 263 15.9 6.78 7.88 G1V NZDV 190904.35+343559.9
19091+3436 STF2474 AB 2017 79 263 15.9 6.78 7.88 G1V NZ V 190904.35+343559.9
19091+3436 STF2474 AB 2018 83 264 15.9 6.78 7.88 G1V NZ V 190904.35+343559.9
19091+3436 STF2474 AB 2019 84 263 16.0 6.78 7.88 G1V NZ V 190904.35+343559.9

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

 
 
WDS 19091+3436 STF 2474 AB (HD 178911) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 23/11/25 Diego Vercelli very easy separated 260 interesting In the same FOV STF2470
Show 22/09/16 daedalus1 mean difficulty separated 263   Seeing: Pickering 4, poor. Measure: theta 263, rho 16.0 +/- 0.0. Beautiful star. STF 2470 is a mirror to STF 2474 which is very close, 10' to the NW. 12 measures were taken. All were the same because (I suppose) the separation matched the eyepiece calibration factor exactly. I did not have to interpolate between the lines.

 
 
WDS 19091+3436 STF 2474 AB (HD 178911) : MEASURES
 
 
No records found.

 
 
WDS 19091+3436 (HD 178911) : VIRTUAL EYEPIECE
 
 

19091+3436 STF2474A mag 6.78 Sp G1V 19091+3436 CHR  84Ab mag 8.96 19091+3436 STF2474B sep 13.2 P.A. 260.30 mag 7.88 19091+3436 WAL 105C sep 86.5 P.A. 130.90 mag 11.42 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 19091+3436 (HD 178911) : ALADIN DSS IMAGE @ 19h 09m 04.35s +34° 35' 59.9"
 
 
 
 
WDS 19091+3436 STF 2474 AB (HD 178911) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


19091+3436  STF2474AB distance=0' 19088+3446  STF2470 distance=11' 19098+3430  KPP4140 distance=12' 19088+3419  POP  30 distance=18' 19089+3404  COU1462Aa,Ab distance=33' 19089+3404  TOK 327AB distance=33' 19077+3402  ES 2288 distance=38' 19069+3410  WFC 217 distance=38' 19069+3505  POP  18 distance=41' 19059+3502  BKO  58DE distance=46' 19059+3502  BKO  58BC distance=47' 19059+3502  BKO  58BD distance=47' 19059+3502  HZG  13AB distance=47' 19059+3502  BKO  58AC distance=47' 19129+3427  ES 2289 distance=48' 19066+3355  ZUL   1 distance=52' 19072+3350  HEI 806AB distance=52' 19072+3350  HEI 806AC distance=52' 19132+3420  COU1616 distance=54' 19060+3354  TDS 965 distance=57' 19106+3530  ALI 145 distance=58' 19129+3510  HU  942 distance=58' 19137+3454  ES 2238 distance=61' 19141+3433  GMC  26 distance=62' 19055+3352  HU  940 distance=63' 19132+3400  ES 2290AB distance=63' 19132+3400  ES 2290AB,C distance=63' 19132+3400  ES 2290AB,D distance=63' 19041+3425  TDT1207 distance=63' 19045+3406  J  1209 distance=65' 19145+3434  BU  975BC distance=67' 19145+3434  STT 367A,BC distance=67' 19145+3434  HO  648AD distance=67' 19145+3434  RAO  84AE distance=67' 19071+3539  TDT1231 distance=68' 19142+3413  STT 366AB distance=68' 19142+3413  ES 2675AC distance=68' 19142+3413  WAL 106AD distance=68' 19142+3413  ES 2675CD distance=69' 19039+3409  BU 1285AB distance=70' 19039+3409  BU 1285AC distance=70' 19061+3335  TDT1223 distance=72' 19125+3534  CRC  33 distance=72' 19108+3545  TDT1278 distance=73' 19120+3543  ALI 146 distance=76' 19147+3506  ES 2239 distance=77' 19061+3549  COU1614 distance=82' 19047+3334  ES 2237 distance=83' 19123+3321  COU1314 distance=86' 19060+3553  H 5 103 distance=86' 19074+3601  COU1615 distance=88' 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 19091+3436 CHR 84 Aa,Ab 114 0.1
Show 19091+3436 STF2474 AB 262 16.0
Show 19091+3436 WAL 105 AC 126 97.5
Show 19088+3446 STF2470 267 13.8 11
Show 19098+3430 KPP4140 236 35.7 12
Show 19088+3419 POP 30 316 2.3 18
Show 19089+3404 COU1462 Aa,Ab 32 0.2 33
Show 19089+3404 TOK 327 AB 47 44.4 33
Show 19077+3402 ES 2288 60 4.5 38
Show 19069+3410 WFC 217 335 7.7 38
Show 19069+3505 POP 18 213 4.3 41
Show 19059+3502 BKO 58 DE 140 14.3 46
Show 19059+3502 BKO 58 BC 292 13.9 47
Show 19059+3502 BKO 58 BD 184 46.7 47
Show 19059+3502 HZG 13 AB 137 27.4 47
Show 19059+3502 BKO 58 AC 159 16.0 47
Show 19129+3427 ES 2289 198 1.7 48
Show 19066+3355 ZUL 1 165 1.4 52
Show 19072+3350 HEI 806 AB 89 3.3 52
Show 19072+3350 HEI 806 AC 224 4.1 52
Show 19132+3420 COU1616 132 0.3 54
Show 19060+3354 TDS 965 165 1.4 57
Show 19106+3530 ALI 145 308 14.4 58
Show 19129+3510 HU 942 278 1.7 58
Show 19137+3454 ES 2238 218 2.2 61
Show 19141+3433 GMC 26 205 19.0 62
Show 19055+3352 HU 940 187 0.4 63
Show 19132+3400 ES 2290 AB 328 2.7 63
Show 19132+3400 ES 2290 AB,C 77 16.3 63
Show 19132+3400 ES 2290 AB,D 67 27.0 63
Show 19041+3425 TDT1207 125 2.4 63
Show 19045+3406 J 1209 155 4.4 65
Show 19145+3434 BU 975 BC 261 1.0 67
Show 19145+3434 STT 367 A,BC 226 34.6 67
Show 19145+3434 HO 648 AD 93 15.7 67
Show 19145+3434 RAO 84 AE 73 2.9 67
Show 19071+3539 TDT1231 269 0.9 68
Show 19142+3413 STT 366 AB 230 21.8 68
Show 19142+3413 ES 2675 AC 139 26.6 68
Show 19142+3413 WAL 106 AD 116 22.6 68
Show 19142+3413 ES 2675 CD 16 10.9 69
Show 19039+3409 BU 1285 AB 289 11.2 70
Show 19039+3409 BU 1285 AC 208 41.8 70
Show 19061+3335 TDT1223 41 2.5 72
Show 19125+3534 CRC 33 127 12.0 72
Show 19108+3545 TDT1278 25 2.0 73
Show 19120+3543 ALI 146 123 7.9 76
Show 19147+3506 ES 2239 46 8.8 77
Show 19061+3549 COU1614 117 0.5 82
Show 19047+3334 ES 2237 218 9.9 83
Show 19123+3321 COU1314 65 1.1 86

 
 
WDS 19091+3436 : COMPONENTS
 
 
  A Ab B
Ab pa=118.2°
sep=0.05"
 
B pa=260.3°
sep=13.20"
pa=260.4°
sep=13.24"
 
C pa=130.9°
sep=86.46"
pa=130.9°
sep=86.41"
pa=124.8°
sep=95.39"
 
 
19091+3436 A
 
 
Name HD 178911 Coord arcsec 2000 190904.35+343559.9 Mag 6.78 Spectral class G1V (yellow)
PmRA 56.00 PmDE 191.0 SAO 67879 HIP 94076
Tycho2 2648-02148-1 HD 178911 HR 7272 GC 26396
BD BD+34 3439
Tycho2
Tycho2 2648-02148-1 Pflag RAmdeg 287.26828204 DEmdeg 34.60043270
PmRA 51.7 PmDE 186.1 E RAmdeg 4 E DEmdeg 4
E pmRA 1.8 E pmDE 1.7 EpRAm 1991.39 EpDEm 1991.57
Num 9 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.2 BTmag 7.494 E BTmag 0.015 VTmag 6.782
E VTmag 0.010 Prox 162 TYC T HIP 94076
CCDM A RAdeg 287.26813333 DEdeg 34.60000222 EpRA 1990 1.49
EpDE 1990 1.67 E RAdeg 4.2 E DEdeg 3.9 Posflg
Corr 0.0
SAO
SAO 67879 DelFlag RA1950 PmRA1950 0.0041
DE1950 PmDE1950 0.195 Vmag 6.5 SpType G5
Double code Source 70 CatNum 26396 DM BD+34 3439
DMcomp BDsup HD 178911 M HD 0
GC 26396 RA1950rad 5.00577727 DE1950rad 0.60242322 PmRA2000 0.0043
PmDE2000 0.195
Hipparcos
Catalog H HIP 94076 Proxy RAhms 19 09 04.35
DEdms +34 35 59.9 Vmag 6.7 VarFlag R Vmag H
RAdeg 287.268 DEdeg 34.6 AstroRef A Plx 20.42
CCDM 19091+3436 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 178911 BD BD+34 3439
CD CP Dm number +34 3439 VIred 0.71
SpType G1V R SpType Coord arcsec 2000 190904.35+343559.9
Hipparcos 2
HIP 94076 Sn 95 So 3 Nc 1
RArad 5.0137746366 DErad 0.6038834967 Plx 19.11 PmRA 51.89
PmDE 196.24 E RArad 1.68 E DErad 2 E Plx 2.35
E pmRA 2.06 E pmDE 2.31 Hpmag 6.8352 E Hpmag 0.0132
SHp 0.066 VA 0 BV 0.643 E BV 0.007
VI 0.71
CCDM
Ccdm 19091+3436 RComp Comp A Note1
Note2 Discov num DRAs -1.67 DDEs 1.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.5 Sp G5 PmNote *
PmRA 33 PmDE 178 Dm number +34 3439 Cat1 BD
Name2 +34 1805 Cat2 AGK2/3 HD 178911 M HD
ADS BDS A12101 M ADS BDS N IDS IDS 19054N3426A
HIC 94076
 
 
19091+3436 Ab
 
 
Coord arcsec 2000 190904.35+343559.9 Mag 8.96 Calc delta mag 2.07 Calc coord yes
 
 
19091+3436 B
 
 
Coord arcsec 2000 190903.30+343557.7 Mag 7.88 PmRA 69.00 PmDE 197.0
HIP 94075 Tycho2 2648-02151-1 BD BD+34 3438 Calc delta mag 0.99
Calc coord yes
Tycho2
Tycho2 2648-02151-1 Pflag RAmdeg 287.26292216 DEmdeg 34.59986588
PmRA 69.1 PmDE 196.6 E RAmdeg 6 E DEmdeg 6
E pmRA 5.6 E pmDE 6.0 EpRAm 1991.50 EpDEm 1991.65
Num 3 Q RAmdeg 0.2 Q DEmdeg 0.3 Q pmRA 0.1
Q pmDE 0.4 BTmag 8.723 E BTmag 0.017 VTmag 7.877
E VTmag 0.012 Prox 162 TYC T HIP 94075
CCDM B RAdeg 287.26272417 DEdeg 34.59941111 EpRA 1990 1.52
EpDE 1990 1.67 E RAdeg 6.4 E DEdeg 5.8 Posflg
Corr 0.1
Hipparcos
Catalog H HIP 94075 Proxy RAhms 19 09 03.06
DEdms +34 35 57.8 Vmag 7.97 VarFlag R Vmag H
RAdeg 287.263 DEdeg 34.5994 AstroRef B Plx 21.4
CCDM 19091+3436 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD BD BD+34 3438
CD CP Dm number +34 3438 VIred 0.79
SpType G5 R SpType Coord arcsec 2000 190903.06+343557.8
Hipparcos 2
HIP 94075 Sn 95 So 3 Nc 1
RArad 5.0136807468 DErad 0.6038729014 Plx 23.48 PmRA 55.14
PmDE 201.3 E RArad 2.73 E DErad 3.59 E Plx 3.95
E pmRA 3.43 E pmDE 4.39 Hpmag 8.2885 E Hpmag 0.0358
SHp 0 VA 0 BV 0.75 E BV 0.015
VI 0.79
CCDM
Ccdm 19091+3436 RComp Comp B Note1
Note2 Discov num STF2474 DRAs -2.85 DDEs 0.1
R dRAs 10 Year 1949 Theta 261 Rho 16.4
Obs 13 Vmag 8.6 Sp PmNote *
PmRA 64 PmDE 207 Dm number +34 3438 Cat1 BD
Name2 +34 1804 Cat2 AGK2/3 HD M HD
ADS BDS A12101 M ADS BDS N IDS IDS 19054N3426B
HIC 94075
 
 
19091+3436 C
 
 
Coord arcsec 2000 190909.64+343503.3 Mag 11.42 PmRA -18.00 PmDE -19.0
Calc delta mag 4.53 Calc coord yes