Coord 2000 | 18455+2815 | Discov num | STF2381 | Comp | Coord arcsec 2000 | 18 45 30.77 +28 15 24.3 | |||||
Date first | 1830 | Date last | 2018 | Obs | 27 | ||||||
Pa first | 123 | Pa last | 122.4 | P.A. Now (θ) | 122.4° | ||||||
Sep first | 8.5 | Sep last | 8.919 | Sep. Now (ρ) | 8.919" | ||||||
Mag pri | 8.27 | Mag sec | 10.36 | delta mag (ΔM) | 2.09 | Spectral class | G8III/IV (yellow) | ||||
Pri motion ra | +016 | Sec motion ra | +017 | ||||||||
Pri motion dec | +010 | Sec motion dec | +007 | ||||||||
Notes |
Name | HD 173702 | Constellation | Lyra | SAO | 86407 | HIP | 92031 | ||||
Tycho2 | 2120-01126-1 | Gaia DR2 | 4539184771447684992 | HD | 173702 | GC | 25699 | ||||
ADS | 11657 | BD | BD+28 3073 | Distance | 259.74 | Distance ly | 847.27 |
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 |
18455+2815 | STF2381 | 2008 | 19 | 122 | 8.5 | 8.27 | 10.36 | G8III/IV | D | 184530.77+281524.3 | |
18455+2815 | STF2381 | 2015 | 22 | 122 | 8.6 | 8.27 | 10.36 | G8III/IV | 184530.77+281524.3 | ||
18455+2815 | STF2381 | 2018 | 26 | 122 | 8.9 | 8.27 | 10.36 | G8III/IV | 184530.77+281524.3 |
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=125.8° sep=8.18" |
Componente originario normalizzato | AB | Name | HD 173702 | Coord arcsec 2000 | 184530.77+281524.3 | Mag | 8.27 | ||||
Spectral class | G8III/IV (yellow) | PmRA | 16.00 | PmDE | 10.0 | SAO | 86407 | ||||
HIP | 92031 | Tycho2 | 2120-01126-1 | HD | 173702 | GC | 25699 | ||||
ADS | 11657 | BD | BD+28 3073 |
Tycho2 | 2120-01126-1 | Pflag | RAmdeg | 281.37821383 | DEmdeg | 28.25674371 | |||||
PmRA | 14.9 | PmDE | 9.1 | E RAmdeg | 6 | E DEmdeg | 6 | ||||
E pmRA | 1.5 | E pmDE | 1.4 | EpRAm | 1991.31 | EpDEm | 1991.41 | ||||
Num | 7 | Q RAmdeg | 1.3 | Q DEmdeg | 1.3 | Q pmRA | 1.4 | ||||
Q pmDE | 1.4 | BTmag | 9.484 | E BTmag | 0.018 | VTmag | 8.273 | ||||
E VTmag | 0.011 | Prox | 86 | TYC | T | HIP | 92031 | ||||
CCDM | A | RAdeg | 281.37817361 | DEdeg | 28.25672250 | EpRA 1990 | 1.52 | ||||
EpDE 1990 | 1.65 | E RAdeg | 6.3 | E DEdeg | 5.6 | Posflg | |||||
Corr | -0.1 |
SAO | 86407 | DelFlag | RA1950 | PmRA1950 | 0.0016 | ||||||
DE1950 | PmDE1950 | 0.001 | Vmag | 7.8 | SpType | K0 | |||||
Double code | Source | 70 | CatNum | 25699 | DM | BD+28 3073 | |||||
DMcomp | BDsup | HD | 173702 | M HD | 0 | ||||||
GC | 25699 | RA1950rad | 4.90234849 | DE1950rad | 0.49223094 | PmRA2000 | 0.0018 | ||||
PmDE2000 | 0 |
Catalog | H | HIP | 92031 | Proxy | H | RAhms | 18 45 30.76 | ||||
DEdms | +28 15 24.2 | Vmag | 8.05 | VarFlag | R Vmag | H | |||||
RAdeg | 281.378 | DEdeg | 28.2567 | AstroRef | A | Plx | 3.05 | ||||
CCDM | 18455+2815 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | AB | |||||
Theta | 122 | Rho | 8.649 | HD | 173702 | BD | BD+28 3073 | ||||
CD | CP | Dm number | +28 3073 | VIred | 0.99 | ||||||
SpType | G8III-IV | R SpType | Coord arcsec 2000 | 184530.76+281524.2 |
HIP | 92031 | Sn | 15 | So | 3 | Nc | 2 | ||||
RArad | 4.9109755098 | DErad | 0.4931728528 | Plx | 3.85 | PmRA | 16.83 | ||||
PmDE | 8.98 | E RArad | 0.52 | E DErad | 0.65 | E Plx | 0.81 | ||||
E pmRA | 0.59 | E pmDE | 0.77 | Hpmag | 8.2121 | E Hpmag | 0.002 | ||||
SHp | 0.018 | VA | 0 | BV | 0.969 | E BV | 0.014 | ||||
VI | 0.95 |
Ccdm | 18455+2815 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 0.90 | DDEs | 25.1 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 8.3 | Sp | K0 | PmNote | * | ||||
PmRA | 44 | PmDE | 30 | Dm number | +28 3073 | Cat1 | BD | ||||
Name2 | +28 1846 | Cat2 | AGK2/3 | HD | 173702 | M HD | |||||
ADS BDS | A11657 | M ADS BDS | N IDS | IDS | 18416N2809A | ||||||
HIC | 92031 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 184531.27+281519.5 | Mag | 10.36 | PmRA | 17.00 | ||||
PmDE | 7.0 | Calc delta mag | 2.09 | Calc coord | yes |
Ccdm | 18455+2815 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF2381 | DRAs | DDEs | |||||||
R dRAs | Year | 1830 | Theta | 123 | Rho | 8.7 | |||||
Obs | 8 | Vmag | 10.3 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A11657 | M ADS BDS | N IDS | IDS | 18416N2809B | ||||||
HIC | 92031 |