Coord 2000 | 18429+4456 | Discov num | STF2380 | Comp | Coord arcsec 2000 | 18 42 55.42 +44 55 30.9 | |||||
Date first | 1831 | Date last | 2015 | Obs | 56 | ||||||
Pa first | 10 | Pa last | 7.6 | P.A. Now (θ) | 7.6° | ||||||
Sep first | 25.8 | Sep last | 25.52 | Sep. Now (ρ) | 25.52" | ||||||
Mag pri | 7.28 | Mag sec | 8.70 | delta mag (ΔM) | 1.42 | Spectral class | G8III (yellow) | ||||
Pri motion ra | -013 | Sec motion ra | -012 | ||||||||
Pri motion dec | -018 | Sec motion dec | -020 | ||||||||
Notes | N V (See Notes, Proper motion indicates physical) |
Name | HD 173399 | Constellation | Lyra | SAO | 47727 | HIP | 91782 | ||||
Tycho2 | 3130-02982-1 | Gaia DR2 | 2117485191223202560 | HD | 173399 | GC | 25623 | ||||
ADS | 11616 | DM | BD+44 2974 | BD | BD+44 2973 | Distance | 138.12 | ||||
Distance ly | 450.55 |
discov_num | notes | refcode |
STF2380 | B is BD+44@2974. |
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 |
18429+4456 | STF2380 | 2005 | 45 | 8 | 25.8 | 7.28 | 8.70 | G8III | NZD | 184255.42+445530.9 | |
18429+4456 | STF2380 | 2008 | 47 | 8 | 25.6 | 7.28 | 8.70 | G8III | NZD | 184255.42+445530.9 | |
18429+4456 | STF2380 | 2012 | 50 | 8 | 25.7 | 7.28 | 8.70 | G8III | NZD | 184255.42+445530.9 | |
18429+4456 | STF2380 | 2013 | 51 | 8 | 25.7 | 7.28 | 8.70 | G8III | NZD | 184255.42+445530.9 | |
18429+4456 | STF2380 | 2015 | 52 | 8 | 25.5 | 7.28 | 8.70 | G8III | NZ | 184255.42+445530.9 |
Show | date | username | difficulty | sep | sep_sigma | pa | pa_sigma | delta_mag | # | notes |
Show | 14/10/23 | theophilusmonk | very easy | 25.00 | 6.00 | 4 |
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=5.4° sep=25.41" |
Componente originario normalizzato | AB | Name | HD 173399 | Coord arcsec 2000 | 184255.42+445530.9 | Mag | 7.28 | ||||
Spectral class | G8III (yellow) | PmRA | -13.00 | PmDE | -18.0 | SAO | 47727 | ||||
HIP | 91782 | Tycho2 | 3130-02982-1 | HD | 173399 | GC | 25623 | ||||
ADS | 11616 | BD | BD+44 2973 |
Tycho2 | 3130-02982-1 | Pflag | RAmdeg | 280.73091867 | DEmdeg | 44.92525263 | |||||
PmRA | -12.2 | PmDE | -21.6 | E RAmdeg | 5 | E DEmdeg | 5 | ||||
E pmRA | 0.8 | E pmDE | 0.9 | EpRAm | 1991.20 | EpDEm | 1991.19 | ||||
Num | 12 | Q RAmdeg | 1.6 | Q DEmdeg | 1.2 | Q pmRA | 1.5 | ||||
Q pmDE | 1.1 | BTmag | 8.291 | E BTmag | 0.016 | VTmag | 7.280 | ||||
E VTmag | 0.011 | Prox | 257 | TYC | T | HIP | 91782 | ||||
CCDM | A | RAdeg | 280.73095806 | DEdeg | 44.92530306 | EpRA 1990 | 1.76 | ||||
EpDE 1990 | 1.62 | E RAdeg | 4.8 | E DEdeg | 4.6 | Posflg | |||||
Corr | 0.0 |
SAO | 47727 | DelFlag | RA1950 | PmRA1950 | -0.0025 | ||||||
DE1950 | PmDE1950 | -0.015 | Vmag | 7.1 | SpType | G0 | |||||
Double code | Source | 70 | CatNum | 25623 | DM | BD+44 2973 | |||||
DMcomp | BDsup | HD | 173399 | M HD | 0 | ||||||
GC | 25623 | RA1950rad | 4.89325335 | DE1950rad | 0.78320834 | PmRA2000 | -0.002 | ||||
PmDE2000 | -0.016 |
Catalog | H | HIP | 91782 | Proxy | RAhms | 18 42 55.43 | |||||
DEdms | +44 55 31.1 | Vmag | 7.17 | VarFlag | R Vmag | G | |||||
RAdeg | 280.731 | DEdeg | 44.9253 | AstroRef | A | Plx | 8.09 | ||||
CCDM | 18429+4456 | N CCDM | I | Nsys | 2 | Ncomp | 1 | ||||
MultFlag | C | Source | P | Qual | B | M HIP | |||||
Theta | Rho | HD | 173399 | BD | BD+44 2973 | ||||||
CD | CP | Dm number | +44 2973 | VIred | 0.89 | ||||||
SpType | G5IV | R SpType | Coord arcsec 2000 | 184255.43+445531.1 |
HIP | 91782 | Sn | 95 | So | 3 | Nc | 1 | ||||
RArad | 4.8996795528 | DErad | 0.7840944867 | Plx | 7.24 | PmRA | -14.05 | ||||
PmDE | -21.67 | E RArad | 0.51 | E DErad | 0.55 | E Plx | 0.6 | ||||
E pmRA | 0.56 | E pmDE | 0.73 | Hpmag | 7.3513 | E Hpmag | 0.0129 | ||||
SHp | 0.017 | VA | 0 | BV | 0.889 | E BV | 0.011 | ||||
VI | 0.89 |
Ccdm | 18429+4456 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 1.34 | DDEs | -29.4 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 7.3 | Sp | G0 | PmNote | * | ||||
PmRA | -30 | PmDE | -28 | Dm number | +44 2973 | Cat1 | BD | ||||
Name2 | +44 1521 | Cat2 | AGK2/3 | HD | 173399 | M HD | |||||
ADS BDS | A11616 | M ADS BDS | N IDS | IDS | 18400N4450A | ||||||
HIC | 91782 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 184255.65+445556.2 | Mag | 8.7 | PmRA | -12.00 | ||||
PmDE | -20.0 | HIP | 91783 | Tycho2 | 3130-02983-1 | ADS | 11616 | ||||
BD | BD+44 2974 | Calc delta mag | 1.42 | Calc coord | yes |
Tycho2 | 3130-02983-1 | Pflag | RAmdeg | 280.73234791 | DEmdeg | 44.93231566 | |||||
PmRA | -15.5 | PmDE | -20.2 | E RAmdeg | 9 | E DEmdeg | 9 | ||||
E pmRA | 1.1 | E pmDE | 1.1 | EpRAm | 1991.03 | EpDEm | 1990.92 | ||||
Num | 4 | Q RAmdeg | 1.4 | Q DEmdeg | 2.4 | Q pmRA | 1.5 | ||||
Q pmDE | 2.4 | BTmag | 9.300 | E BTmag | 0.020 | VTmag | 8.703 | ||||
E VTmag | 0.015 | Prox | 257 | TYC | T | HIP | 91783 | ||||
CCDM | B | RAdeg | 280.73239806 | DEdeg | 44.93236278 | EpRA 1990 | 1.76 | ||||
EpDE 1990 | 1.64 | E RAdeg | 9.3 | E DEdeg | 8.9 | Posflg | |||||
Corr | 0.0 |
Catalog | H | HIP | 91783 | Proxy | RAhms | 18 42 55.78 | |||||
DEdms | +44 55 56.5 | Vmag | 8.99 | VarFlag | R Vmag | H | |||||
RAdeg | 280.732 | DEdeg | 44.9324 | AstroRef | B | Plx | 7.39 | ||||
CCDM | 18429+4456 | N CCDM | I | Nsys | 2 | Ncomp | 1 | ||||
MultFlag | C | Source | I | Qual | B | M HIP | |||||
Theta | Rho | HD | 173399 | BD | BD+44 2974 | ||||||
CD | CP | Dm number | +44 2974 | VIred | 0.49 | ||||||
SpType | F2V | R SpType | Coord arcsec 2000 | 184255.78+445556.5 |
HIP | 91783 | Sn | 95 | So | 3 | Nc | 1 | ||||
RArad | 4.8997046106 | DErad | 0.7842178189 | Plx | 7.25 | PmRA | -10.66 | ||||
PmDE | -23.14 | E RArad | 3.15 | E DErad | 4.09 | E Plx | 3.78 | ||||
E pmRA | 3.66 | E pmDE | 6.12 | Hpmag | 9.0122 | E Hpmag | 0.044 | ||||
SHp | 0 | VA | 0 | BV | 0.424 | E BV | 0.02 | ||||
VI | 0.49 |
Ccdm | 18429+4456 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF2380 | DRAs | 1.79 | DDEs | -3.4 | |||||
R dRAs | 10 | Year | 1831 | Theta | 009 | Rho | 25.8 | ||||
Obs | 11 | Vmag | 8.8 | Sp | PmNote | * | |||||
PmRA | -10 | PmDE | -26 | Dm number | +44 2974 | Cat1 | BD | ||||
Name2 | +44 1522 | Cat2 | AGK2/3 | HD | M HD | ||||||
ADS BDS | A11616 | M ADS BDS | N IDS | IDS | 18400N4450B | ||||||
HIC | 91783 |