Coord 2000 | 11207+2253 | Discov num | STF1531 | Comp | Coord arcsec 2000 | 11 20 43.56 +22 52 51.7 | |||||
Date first | 1829 | Date last | 2017 | Obs | 27 | ||||||
Pa first | 167 | Pa last | 166.8 | P.A. Now (θ) | 166.8° | ||||||
Sep first | 23.1 | Sep last | 23.5 | Sep. Now (ρ) | 23.5" | ||||||
Mag pri | 9.35 | Mag sec | 10.30 | delta mag (ΔM) | 0.95 | Spectral class | G5 (yellow) | ||||
Pri motion ra | -037 | Sec motion ra | -037 | ||||||||
Pri motion dec | +004 | Sec motion dec | +001 | ||||||||
Notes | Z (Parallax indicates components are physical) |
Name | HD 98574 | Constellation | Leo | SAO | 81783 | HIP | 55402 | ||||
Tycho2 | 1981-01854-1 | Gaia DR2 | 3991286827268427264 | HD | 98574 | GC | 15591 | ||||
BD | BD+23 2336 | Distance | 77.64 | Distance ly | 253.26 |
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 |
11207+2253 | STF1531 | 2006 | 19 | 167 | 23.5 | 9.35 | 10.30 | G5 | ZD | 112043.56+225251.7 | |
11207+2253 | STF1531 | 2012 | 21 | 167 | 23.4 | 9.35 | 12.90 | G5 | ZD | 112043.56+225251.7 | |
11207+2253 | STF1531 | 2015 | 23 | 167 | 23.4 | 9.35 | 10.30 | G5 | Z | 112043.56+225251.7 | |
11207+2253 | STF1531 | 2017 | 27 | 167 | 23.5 | 9.35 | 10.30 | G5 | Z | 112043.56+225251.7 |
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=167.8° sep=23.41" |
Componente originario normalizzato | AB | Name | HD 98574 | Coord arcsec 2000 | 112043.56+225251.7 | Mag | 9.35 | ||||
Spectral class | G5 (yellow) | PmRA | -37.00 | PmDE | 4.0 | SAO | 81783 | ||||
HIP | 55402 | Tycho2 | 1981-01854-1 | HD | 98574 | GC | 15591 | ||||
BD | BD+23 2336 |
Tycho2 | 1981-01854-1 | Pflag | RAmdeg | 170.18150758 | DEmdeg | 22.88103889 | |||||
PmRA | -39.2 | PmDE | 4.9 | E RAmdeg | 9 | E DEmdeg | 11 | ||||
E pmRA | 1.1 | E pmDE | 1.1 | EpRAm | 1991.17 | EpDEm | 1990.65 | ||||
Num | 4 | Q RAmdeg | 0.1 | Q DEmdeg | 0.4 | Q pmRA | 0.1 | ||||
Q pmDE | 0.4 | BTmag | 9.966 | E BTmag | 0.021 | VTmag | 9.351 | ||||
E VTmag | 0.016 | Prox | 233 | TYC | T | HIP | 55402 | ||||
CCDM | A | RAdeg | 170.18160361 | DEdeg | 22.88102750 | EpRA 1990 | 1.88 | ||||
EpDE 1990 | 1.73 | E RAdeg | 8.9 | E DEdeg | 11.2 | Posflg | |||||
Corr | 0.3 |
SAO | 81783 | DelFlag | RA1950 | PmRA1950 | -0.002 | ||||||
DE1950 | PmDE1950 | -0.007 | Vmag | 8.8 | SpType | G5 | |||||
Double code | Source | 70 | CatNum | 15591 | DM | BD+23 2336 | |||||
DMcomp | BDsup | HD | 98574 | M HD | 0 | ||||||
GC | 15591 | RA1950rad | 2.95869419 | DE1950rad | 0.40412749 | PmRA2000 | -0.002 | ||||
PmDE2000 | -0.002 |
Catalog | H | HIP | 55402 | Proxy | RAhms | 11 20 43.59 | |||||
DEdms | +22 52 51.7 | Vmag | 9.28 | VarFlag | R Vmag | H | |||||
RAdeg | 170.182 | DEdeg | 22.881 | AstroRef | A | Plx | 16.07 | ||||
CCDM | 11207+2253 | N CCDM | I | Nsys | 2 | Ncomp | 1 | ||||
MultFlag | C | Source | P | Qual | D | M HIP | |||||
Theta | Rho | HD | 98574 | BD | BD+23 2336 | ||||||
CD | CP | Dm number | +23 2336 | VIred | 0.64 | ||||||
SpType | G5 | R SpType | Coord arcsec 2000 | 112043.59+225251.7 |
HIP | 55402 | Sn | 95 | So | 3 | Nc | 1 | ||||
RArad | 2.9702293498 | DErad | 0.3993492377 | Plx | 12.88 | PmRA | -35.11 | ||||
PmDE | 8.81 | E RArad | 1.8 | E DErad | 1.1 | E Plx | 1.85 | ||||
E pmRA | 2.75 | E pmDE | 1.36 | Hpmag | 9.4092 | E Hpmag | 0.0184 | ||||
SHp | 0.028 | VA | 0 | BV | 0.598 | E BV | 0.022 | ||||
VI | 0.67 |
Ccdm | 11207+2253 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 1.55 | DDEs | -8.0 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 9.1 | Sp | G5 | PmNote | * | ||||
PmRA | -38 | PmDE | 7 | Dm number | +23 2336 | Cat1 | BD | ||||
Name2 | +23 1159 | Cat2 | AGK2/3 | HD | 98574 | M HD | |||||
ADS BDS | B 5750 | M ADS BDS | N IDS | IDS | 11154N2326A | ||||||
HIC | 55402 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 112043.92+225228.8 | Mag | 10.3 | PmRA | -37.00 | ||||
PmDE | 1.0 | HIP | 55404 | Tycho2 | 1981-01994-1 | Calc delta mag | 0.95 | ||||
Calc coord | yes |
Tycho2 | 1981-01994-1 | Pflag | RAmdeg | 170.18309956 | DEmdeg | 22.87472274 | |||||
PmRA | -41.2 | PmDE | 3.6 | E RAmdeg | 20 | E DEmdeg | 26 | ||||
E pmRA | 1.2 | E pmDE | 1.2 | EpRAm | 1988.92 | EpDEm | 1986.46 | ||||
Num | 4 | Q RAmdeg | 0.3 | Q DEmdeg | 1.2 | Q pmRA | 0.3 | ||||
Q pmDE | 1.2 | BTmag | 11.318 | E BTmag | 0.050 | VTmag | 10.296 | ||||
E VTmag | 0.032 | Prox | 233 | TYC | T | HIP | 55404 | ||||
CCDM | B | RAdeg | 170.18320028 | DEdeg | 22.87471444 | EpRA 1990 | 1.88 | ||||
EpDE 1990 | 1.71 | E RAdeg | 19.8 | E DEdeg | 27.1 | Posflg | P | ||||
Corr | 0.3 |
Catalog | H | HIP | 55404 | Proxy | RAhms | 11 20 43.98 | |||||
DEdms | +22 52 28.9 | Vmag | 10.52 | VarFlag | R Vmag | H | |||||
RAdeg | 170.183 | DEdeg | 22.8747 | AstroRef | B | Plx | 14.86 | ||||
CCDM | 11207+2253 | N CCDM | I | Nsys | 2 | Ncomp | 1 | ||||
MultFlag | C | Source | I | Qual | D | M HIP | |||||
Theta | Rho | HD | BD | ||||||||
CD | CP | Dm number | VIred | 0.71 | |||||||
SpType | R SpType | Coord arcsec 2000 | 112043.98+225228.9 |
HIP | 55404 | Sn | 95 | So | 3 | Nc | 1 | ||||
RArad | 2.9702577475 | DErad | 0.3992389037 | Plx | 2.84 | PmRA | -23.37 | ||||
PmDE | 5.41 | E RArad | 4.65 | E DErad | 2.89 | E Plx | 4.43 | ||||
E pmRA | 6.92 | E pmDE | 3.41 | Hpmag | 10.5409 | E Hpmag | 0.0414 | ||||
SHp | 0 | VA | 0 | BV | 0.856 | E BV | 0.055 | ||||
VI | 0.87 |
Ccdm | 11207+2253 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF1531 | DRAs | DDEs | |||||||
R dRAs | Year | 1894 | Theta | 166 | Rho | 23.2 | |||||
Obs | 5 | Vmag | 10.3 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | B 5750 | M ADS BDS | N IDS | IDS | 11154N2326B | ||||||
HIC | 55404 |