Coord 2000 | 18545+2037 | Discov num | STF2415 | Comp | Coord arcsec 2000 | 18 54 32.84 +20 36 55.1 | |||||
Date first | 1831 | Date last | 2015 | Obs | 74 | ||||||
Pa first | 299 | Pa last | 289.8 | P.A. Now (θ) | 289.8° | ||||||
Sep first | 2.0 | Sep last | 1.977 | Sep. Now (ρ) | 1.977" | ||||||
Mag pri | 7.07 | Mag sec | 8.73 | delta mag (ΔM) | 1.66 | Spectral class | A0IV (white) | ||||
Pri motion ra | +004 | Sec motion ra | +004 | ||||||||
Pri motion dec | -002 | Sec motion dec | -002 | ||||||||
Notes |
Name | HD 175427 | Constellation | Hercules | SAO | 86563 | HIP | 92800 | ||||
Tycho2 | 1592-00227-1 | Gaia DR2 | 4519122120218359552 | HD | 175427 | GC | 25948 | ||||
BD | BD+20 3985 | Distance | 194.93 | Distance ly | 635.86 |
refcode | metd | author | reference |
STFA | (F. Struve DD - Appendix list #1) | ................... | |
STFB | (F. Struve DD - Appendix list #2) | ................... | |
StF1833A | Ma - | Struve, F.G.W. | 1833MmRAS...5...13H |
StF1833A | +Mc | cited by Herschel (MemRAS 5, 13, 1833) | |
StF1833B | Ma - | Struve, F.G.W. | 1833AN.....10..389B |
StF1833B | cited by Bessel (AN 10, 389, 1833) | ||
StF1837 | Ma - | Struve, F.G.W. | 1837AN.....14...249 |
StF1837 | Stellarum duplicium et multiplicium mensurae micrometricae... | ||
StF1837 | (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837 | ||
StF1844A | Ma - | Struve, F.G.W. | 1844QB43.S66....... |
StF1844A | cited by Smyth (Cycle of Celestial Objects 2, 1844) | ||
StF1852A | Ma - | Struve, F.G.W. | . |
StF1852A | cited by Bishop (Bishop Obs. Astron. Observations 1852) | ||
StF1865A | Ma - | Struve, F.G.W. | 1865AN.....64...81E |
StF1865A | cited by Engelmann (AN 64, 81, #1518, 1865) | ||
StF1875A | Ma - | Struve, F.G.W. | 1875AN.....85..323D |
StF1875A | cited by Doberck, 1875 (see Dob1875b,f,g,h) | ||
StF1878 | Ma - | Struve, F.G.W. | . |
StF1878 | Pulkova Observations 9, 1878 | ||
StF1878B | Ma - | Struve, F.G.W. | 1878Obs.....2..239G |
StF1878B | cited by Gledhill (Obs 2, 239, 1878) | ||
StF1880A | Ma - | Struve, F.G.W. | 1880Obs.....3..535G |
StF1880A | cited by Gledhill (Obs 3, 535, 1880) | ||
StF1906A | Ma - | Struve, F.G.W. | 1906QB821.B972..... |
StF1906A | cited in BDS (Burnham Double Star Cat.), 1906 | ||
StF1906B | Ma - | Struve, F.G.W. | 1906MmRAS..56....1L |
StF1906B | cited by Lewis (MemRAS 56, 1, 1906) | ||
StF1922A | Ma - | Struve, F.G.W. | 1922AN....216...49R |
StF1922A | cited by Rabe (AN 216, 49, 1922) | ||
StF1932A | Ma - | Struve, F.G.W. | 1932QB821.A43...... |
StF1932A | cited in ADS (Aitken Double Star Cat.), 1932 | ||
StF2002 | - - | Weis, J. | |
StF2002 | F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue | ||
StF2002 | USNO Library : QB 821 .S8 W49 2002 | ||
StF2022 | - - | email note from Jan Weis: 6 July 2022 | |
StF9999 | Ma - | Struve, F.G.W. | ................... |
StF9999 | Unpublished, manuscript or reference not found. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
18545+2037 | STF2415 | 2004 | 67 | 290 | 2.0 | 7.07 | 8.73 | A0IV | D | 185432.84+203655.1 | |
18545+2037 | STF2415 | 2007 | 70 | 290 | 2.0 | 7.07 | 8.73 | A0IV | D | 185432.84+203655.1 | |
18545+2037 | STF2415 | 2010 | 72 | 289 | 1.9 | 7.07 | 8.73 | A0IV | D | 185432.84+203655.1 | |
18545+2037 | STF2415 | 2011 | 73 | 289 | 2.0 | 7.07 | 8.73 | A0IV | D | 185432.84+203655.1 | |
18545+2037 | STF2415 | 2013 | 73 | 287 | 1.9 | 7.07 | 8.73 | A0IV | D | 185432.84+203655.1 | |
18545+2037 | STF2415 | 2015 | 74 | 290 | 2.0 | 7.07 | 8.73 | A0IV | 185432.84+203655.1 |
Show | date | username | difficulty | sep | sep_sigma | pa | pa_sigma | delta_mag | # | notes |
Show | 12/06/21 | northisup | easy | 2.00 | 293.00 | 1.50 | 1 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | |
B | pa=291.0° sep=1.87" |
Componente originario normalizzato | AB | Name | HD 175427 | Coord arcsec 2000 | 185432.84+203655.1 | Mag | 7.07 | ||||
Spectral class | A0IV (white) | PmRA | 4.00 | PmDE | -2.0 | SAO | 86563 | ||||
HIP | 92800 | Tycho2 | 1592-00227-1 | HD | 175427 | GC | 25948 | ||||
BD | BD+20 3985 |
Tycho2 | 1592-00227-1 | Pflag | P | RAmdeg | 283.63684630 | DEmdeg | 20.61531932 | ||||
PmRA | 3.8 | PmDE | -2.4 | E RAmdeg | 4 | E DEmdeg | 4 | ||||
E pmRA | 1.5 | E pmDE | 1.5 | EpRAm | 1991.44 | EpDEm | 1991.62 | ||||
Num | 5 | Q RAmdeg | 1.2 | Q DEmdeg | 0.8 | Q pmRA | 1.2 | ||||
Q pmDE | 0.9 | BTmag | 7.166 | E BTmag | 0.015 | VTmag | 7.071 | ||||
E VTmag | 0.010 | Prox | 20 | TYC | T | HIP | 92800 | ||||
CCDM | A | RAdeg | 283.63688944 | DEdeg | 20.61530639 | EpRA 1990 | 1.53 | ||||
EpDE 1990 | 1.72 | E RAdeg | 3.7 | E DEdeg | 3.5 | Posflg | D | ||||
Corr | 0.2 |
SAO | 86563 | DelFlag | RA1950 | PmRA1950 | 0.0002 | ||||||
DE1950 | PmDE1950 | -0.002 | Vmag | 7 | SpType | A0 | |||||
Double code | Source | 70 | CatNum | 25948 | DM | BD+20 3985 | |||||
DMcomp | BDsup | HD | 175427 | M HD | 0 | ||||||
GC | 25948 | RA1950rad | 4.94098908 | DE1950rad | 0.35868032 | PmRA2000 | 0.0003 | ||||
PmDE2000 | -0.002 |
Catalog | H | HIP | 92800 | Proxy | H | RAhms | 18 54 32.85 | ||||
DEdms | +20 36 55.1 | Vmag | 6.85 | VarFlag | R Vmag | H | |||||
RAdeg | 283.637 | DEdeg | 20.6153 | AstroRef | A | Plx | 4.43 | ||||
CCDM | 18545+2037 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | AB | |||||
Theta | 291 | Rho | 1.988 | HD | 175427 | BD | BD+20 3985 | ||||
CD | CP | Dm number | +20 3985 | VIred | 0.07 | ||||||
SpType | A0 | R SpType | Coord arcsec 2000 | 185432.85+203655.1 |
HIP | 92800 | Sn | 15 | So | 3 | Nc | 2 | ||||
RArad | 4.9503976138 | DErad | 0.3598049733 | Plx | 5.13 | PmRA | 1.73 | ||||
PmDE | -2.24 | E RArad | 0.3 | E DErad | 0.36 | E Plx | 0.62 | ||||
E pmRA | 0.4 | E pmDE | 0.5 | Hpmag | 6.8959 | E Hpmag | 0.0008 | ||||
SHp | 0.01 | VA | 0 | BV | 0.121 | E BV | 0.007 | ||||
VI | 0.14 |
Ccdm | 18545+2037 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 2.83 | DDEs | -5.0 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 7.0 | Sp | A0 | PmNote | * | ||||
PmRA | 4 | PmDE | -3 | Dm number | +20 3985 | Cat1 | BD | ||||
Name2 | +20 1985 | Cat2 | AGK2/3 | HD | 175427 | M HD | |||||
ADS BDS | A11816 | M ADS BDS | N IDS | IDS | 18502N2029A | ||||||
HIC | 92800 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 185432.72+203655.8 | Mag | 8.73 | PmRA | 4.00 | ||||
PmDE | -2.0 | Tycho2 | 1592-00227-2 | Calc delta mag | 1.66 | Calc coord | yes |
Tycho2 | 1592-00227-2 | Pflag | P | RAmdeg | 283.63684630 | DEmdeg | 20.61531932 | ||||
PmRA | 3.8 | PmDE | -2.4 | E RAmdeg | 4 | E DEmdeg | 4 | ||||
E pmRA | 1.5 | E pmDE | 1.5 | EpRAm | 1991.44 | EpDEm | 1991.62 | ||||
Num | 5 | Q RAmdeg | 1.2 | Q DEmdeg | 0.8 | Q pmRA | 1.2 | ||||
Q pmDE | 0.9 | BTmag | 8.955 | E BTmag | 0.016 | VTmag | 8.727 | ||||
E VTmag | 0.012 | Prox | 20 | TYC | T | HIP | 92800 | ||||
CCDM | B | RAdeg | 283.63634222 | DEdeg | 20.61549694 | EpRA 1990 | 1.58 | ||||
EpDE 1990 | 1.71 | E RAdeg | 6.7 | E DEdeg | 6.0 | Posflg | D | ||||
Corr | 0.2 |
Ccdm | 18545+2037 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF2415 | DRAs | DDEs | |||||||
R dRAs | Year | 1960 | Theta | 293 | Rho | 1.9 | |||||
Obs | 28 | Vmag | 8.9 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A11816 | M ADS BDS | N IDS | IDS | 18502N2029B | ||||||
HIC | 92800 |