Coord 2000 | 17178+4535 | Discov num | STF2152 | Comp | Coord arcsec 2000 | 17 17 45.83 +45 35 00.2 | |||||
Date first | 1830 | Date last | 2017 | Obs | 36 | ||||||
Pa first | 249 | Pa last | 237.4 | P.A. Now (θ) | 237.4° | ||||||
Sep first | 1.9 | Sep last | 1.967 | Sep. Now (ρ) | 1.967" | ||||||
Mag pri | 9.79 | Mag sec | 9.89 | delta mag (ΔM) | 0.1 | Spectral class | F8 (yellow-white) | ||||
Pri motion ra | +063 | Sec motion ra | +063 | ||||||||
Pri motion dec | -056 | Sec motion dec | -056 | ||||||||
Notes |
Name | HD 156857 | Constellation | Hercules | SAO | 46618 | Tycho2 | 3508-01520-1 | ||||
Gaia DR2 | 1361711237938850816 | HD | 156857 | GC | 23383 |
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 |
17178+4535 | STF2152 | 1999 | 29 | 237 | 1.9 | 9.79 | 9.89 | F8 | 171745.83+453500.2 | ||
17178+4535 | STF2152 | 2009 | 30 | 237 | 1.9 | 9.79 | 9.89 | F8 | 171745.83+453500.2 | ||
17178+4535 | STF2152 | 2010 | 31 | 237 | 1.9 | 9.79 | 9.89 | F8 | 171745.83+453500.2 | ||
17178+4535 | STF2152 | 2014 | 30 | 238 | 2.0 | 9.79 | 9.89 | F8 | 171745.83+453500.2 | ||
17178+4535 | STF2152 | 2015 | 32 | 241 | 1.7 | 9.79 | 9.89 | F8 | 171745.83+453500.2 | ||
17178+4535 | STF2152 | 2017 | 33 | 238 | 2.0 | 9.79 | 9.89 | F8 | 171745.83+453500.2 |
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=227.6° sep=1.57" |
Componente originario normalizzato | AB | Name | HD 156857 | Coord arcsec 2000 | 171745.83+453500.2 | Mag | 9.79 | ||||
Spectral class | F8 (yellow-white) | PmRA | 63.00 | PmDE | -56.0 | Tycho2 | 3508-01520-1 |
Tycho2 | 3508-01520-1 | Pflag | P | RAmdeg | 259.44094313 | DEmdeg | 45.58338017 | ||||
PmRA | 63.2 | PmDE | -56.2 | E RAmdeg | 17 | E DEmdeg | 17 | ||||
E pmRA | 1.5 | E pmDE | 1.3 | EpRAm | 1990.22 | EpDEm | 1989.99 | ||||
Num | 4 | Q RAmdeg | 0.9 | Q DEmdeg | 0.9 | Q pmRA | 0.9 | ||||
Q pmDE | 1.0 | BTmag | 10.321 | E BTmag | 0.030 | VTmag | 9.786 | ||||
E VTmag | 0.026 | Prox | 20 | TYC | T | HIP | |||||
CCDM | RAdeg | 259.44100361 | DEdeg | 45.58362361 | EpRA 1990 | 1.58 | |||||
EpDE 1990 | 1.63 | E RAdeg | 17.0 | E DEdeg | 17.1 | Posflg | D | ||||
Corr | 0.0 |
Ccdm | 17178+4535 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | -2.16 | DDEs | -0.7 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 9.6 | Sp | F8 | PmNote | * | ||||
PmRA | 58 | PmDE | -74 | Dm number | +45 2519 | Cat1 | BD | ||||
Name2 | +45 1341 | Cat2 | AGK2/3 | HD | 156857 | M HD | |||||
ADS BDS | A10458 | M ADS BDS | N IDS | IDS | 17149N4541A | ||||||
HIC |
Componente originario normalizzato | AB | Coord arcsec 2000 | 171745.72+453459.1 | Mag | 9.89 | PmRA | 63.00 | ||||
PmDE | -56.0 | SAO | 46618 | Tycho2 | 3508-01520-2 | HD | 156857 | ||||
GC | 23383 | DM | BD+45 2519 | Calc delta mag | 0.1 | Calc coord | yes |
Tycho2 | 3508-01520-2 | Pflag | P | RAmdeg | 259.44094313 | DEmdeg | 45.58338017 | ||||
PmRA | 63.2 | PmDE | -56.2 | E RAmdeg | 17 | E DEmdeg | 17 | ||||
E pmRA | 1.5 | E pmDE | 1.3 | EpRAm | 1990.22 | EpDEm | 1989.99 | ||||
Num | 4 | Q RAmdeg | 0.9 | Q DEmdeg | 0.9 | Q pmRA | 0.9 | ||||
Q pmDE | 1.0 | BTmag | 10.554 | E BTmag | 0.034 | VTmag | 9.891 | ||||
E VTmag | 0.028 | Prox | 20 | TYC | T | HIP | |||||
CCDM | RAdeg | 259.44033250 | DEdeg | 45.58334500 | EpRA 1990 | 1.58 | |||||
EpDE 1990 | 1.63 | E RAdeg | 18.6 | E DEdeg | 18.5 | Posflg | D | ||||
Corr | 0.0 |
SAO | 46618 | DelFlag | RA1950 | PmRA1950 | 0.0059 | ||||||
DE1950 | PmDE1950 | -0.057 | Vmag | 8.9 | SpType | F8 | |||||
Double code | Source | 70 | CatNum | 23383 | DM | BD+45 2519 | |||||
DMcomp | BDsup | HD | 156857 | M HD | 0 | ||||||
GC | 23383 | RA1950rad | 4.52176969 | DE1950rad | 0.79649746 | PmRA2000 | 0.0065 | ||||
PmDE2000 | -0.055 |
Ccdm | 17178+4535 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF2152 | DRAs | DDEs | |||||||
R dRAs | Year | 1830 | Theta | 246 | Rho | 1.9 | |||||
Obs | 13 | Vmag | 9.8 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A10458 | M ADS BDS | N IDS | IDS | 17149N4541B | ||||||
HIC |