Coord 2000 | 19588+4721 | Discov num | STF2611 | Comp | Coord arcsec 2000 | 19 58 51.90 +47 21 48.2 | |||||
Date first | 1825 | Date last | 2020 | Obs | 87 | ||||||
Pa first | 207 | Pa last | 207.6 | P.A. Now (θ) | 207.6° | ||||||
Sep first | 6.0 | Sep last | 5.201 | Sep. Now (ρ) | 5.201" | ||||||
Mag pri | 8.47 | Mag sec | 8.48 | delta mag (ΔM) | 0.01 | Spectral class | K0 (yellow-orange) | ||||
Pri motion ra | -009 | Sec motion ra | -009 | ||||||||
Pri motion dec | -013 | Sec motion dec | -016 | ||||||||
Notes | Y (Parallax indicates components are non-physical) |
Name | HD 189636 | Constellation | Cygnus | SAO | 49052 | HIP | 98345 | ||||
Tycho2 | 3562-02368-2 | Gaia DR2 | 2085638116106993408 | HD | 189636 | GC | 27699 | ||||
ADS | 13209 | BD | BD+46 2821 | Distance | 294.99 | Distance ly | 962.26 |
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 |
19588+4721 | STF2611 | 2008 | 77 | 207 | 5.2 | 8.47 | 8.48 | K0 | D | 195851.90+472148.2 | |
19588+4721 | STF2611 | 2010 | 79 | 208 | 5.4 | 8.47 | 8.48 | K0 | D | 195851.90+472148.2 | |
19588+4721 | STF2611 | 2017 | 84 | 206 | 5.1 | 8.47 | 8.48 | K0 | 195851.90+472148.2 | ||
19588+4721 | STF2611 | 2018 | 85 | 208 | 5.3 | 8.47 | 8.48 | K0 | 195851.90+472148.2 | ||
19588+4721 | STF2611 | 2020 | 87 | 208 | 5.2 | 8.47 | 8.48 | K0 | 195851.90+472148.2 |
Show | date | username | difficulty | separation ⇓ | pa_estim | interest | notes |
Show | 22/09/16 | daedalus1 | mean difficulty | separated | 208 | Seeing: Pickering 4, poor. Measure: theta 208, rho 5.0 +/- 0.087. Beautiful pair of deep yellow stars. |
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. |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
A | |
B | pa=199.5° sep=4.89" |
Componente originario normalizzato | AB | Name | HD 189636 | Coord arcsec 2000 | 195851.90+472148.2 | Mag | 8.47 | ||||
Spectral class | K0 (yellow-orange) | PmRA | -9.00 | PmDE | -13.0 | SAO | 49052 | ||||
HIP | 98345 | Tycho2 | 3562-02368-1 | HD | 189636 | GC | 27699 | ||||
ADS | 13209 | BD | BD+46 2821 |
Tycho2 | 3562-02368-1 | Pflag | RAmdeg | 299.71523161 | DEmdeg | 47.36207535 | |||||
PmRA | -8.8 | PmDE | -16.2 | E RAmdeg | 8 | E DEmdeg | 11 | ||||
E pmRA | 1.3 | E pmDE | 1.3 | EpRAm | 1991.25 | EpDEm | 1990.68 | ||||
Num | 6 | Q RAmdeg | 0.9 | Q DEmdeg | 1.1 | Q pmRA | 0.8 | ||||
Q pmDE | 1.1 | BTmag | 9.889 | E BTmag | 0.026 | VTmag | 8.479 | ||||
E VTmag | 0.015 | Prox | 53 | TYC | T | HIP | 98345 | ||||
CCDM | A | RAdeg | 299.71526167 | DEdeg | 47.36211333 | EpRA 1990 | 1.73 | ||||
EpDE 1990 | 1.56 | E RAdeg | 8.4 | E DEdeg | 11.1 | Posflg | |||||
Corr | 0.4 |
SAO | 49052 | DelFlag | RA1950 | PmRA1950 | -0.0011 | ||||||
DE1950 | PmDE1950 | 0.003 | Vmag | 7.6 | SpType | K0 | |||||
Double code | Source | 70 | CatNum | 27699 | DM | BD+46 2821 | |||||
DMcomp | BDsup | HD | 189636 | M HD | 0 | ||||||
GC | 27699 | RA1950rad | 5.22442281 | DE1950rad | 0.82424724 | PmRA2000 | -0.0007 | ||||
PmDE2000 | 0.001 |
Catalog | H | HIP | 98345 | Proxy | H | RAhms | 19 58 51.90 | ||||
DEdms | +47 21 48.3 | Vmag | 7.63 | VarFlag | R Vmag | H | |||||
RAdeg | 299.716 | DEdeg | 47.3634 | AstroRef | B | Plx | 2 | ||||
CCDM | 19589+4722 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | BA | |||||
Theta | 207 | Rho | 5.256 | HD | 189636 | BD | BD+46 2821 | ||||
CD | CP | Dm number | +46 2821 | VIred | 1.04 | ||||||
SpType | K0... | R SpType | Coord arcsec 2000 | 195851.90+472148.3 |
HIP | 98345 | Sn | 15 | So | 3 | Nc | 2 | ||||
RArad | 5.2310355845 | DErad | 0.8266475827 | Plx | 3.39 | PmRA | -9.14 | ||||
PmDE | -13.44 | E RArad | 0.74 | E DErad | 0.6 | E Plx | 0.77 | ||||
E pmRA | 0.82 | E pmDE | 0.66 | Hpmag | 7.8003 | E Hpmag | 0.0016 | ||||
SHp | 0.015 | VA | 0 | BV | 1.077 | E BV | 0.197 | ||||
VI | 1.04 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 195851.74+472143.6 | Mag | 8.48 | PmRA | -9.00 | ||||
PmDE | -16.0 | Calc delta mag | 0.01 | Calc coord | yes |