Coord 2000 | 18171+4015 | Discov num | STF2304 | Comp | Coord arcsec 2000 | 18 17 06.98 +40 15 21.2 | |||||
Date first | 1830 | Date last | 2020 | Obs | 33 | ||||||
Pa first | 69 | Pa last | 69.2 | P.A. Now (θ) | 69.2° | ||||||
Sep first | 4.9 | Sep last | 5.133 | Sep. Now (ρ) | 5.133" | ||||||
Mag pri | 8.75 | Mag sec | 9.75 | delta mag (ΔM) | 1 | Spectral class | K0 (yellow-orange) | ||||
Pri motion ra | +000 | Sec motion ra | +002 | ||||||||
Pri motion dec | +020 | Sec motion dec | +020 | ||||||||
Notes |
Name | HD 168295 | Constellation | Lyra | SAO | 47358 | HIP | 89603 | ||||
Tycho2 | 3107-02721-1 | Gaia DR2 | 2109748859910515840 | HD | 168295 | GC | 24972 | ||||
ADS | 11238 | BD | BD+40 3331 | Distance | 275.48 | Distance ly | 898.62 |
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 |
18171+4015 | STF2304 | 2004 | 23 | 70 | 5.4 | 8.75 | 9.75 | K0 | D | 181706.98+401521.2 | |
18171+4015 | STF2304 | 2017 | 25 | 70 | 5.2 | 8.75 | 9.75 | K0 | 181706.98+401521.2 | ||
18171+4015 | STF2304 | 2018 | 27 | 70 | 5.4 | 8.75 | 9.75 | K0 | 181706.98+401521.2 | ||
18171+4015 | STF2304 | 2019 | 31 | 70 | 5.2 | 8.75 | 9.75 | K0 | 181706.98+401521.2 | ||
18171+4015 | STF2304 | 2020 | 32 | 69 | 5.1 | 8.75 | 9.75 | K0 | 181706.98+401521.2 |
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=63.5° sep=4.09" |
Componente originario normalizzato | AB | Name | HD 168295 | Coord arcsec 2000 | 181706.98+401521.2 | Mag | 8.75 | ||||
Spectral class | K0 (yellow-orange) | PmRA | 0.00 | PmDE | 20.0 | SAO | 47358 | ||||
HIP | 89603 | Tycho2 | 3107-02721-1 | HD | 168295 | GC | 24972 | ||||
ADS | 11238 | BD | BD+40 3331 |
Tycho2 | 3107-02721-1 | Pflag | RAmdeg | 274.27908958 | DEmdeg | 40.25588773 | |||||
PmRA | 0.0 | PmDE | 17.8 | E RAmdeg | 10 | E DEmdeg | 9 | ||||
E pmRA | 1.7 | E pmDE | 1.7 | EpRAm | 1991.16 | EpDEm | 1991.34 | ||||
Num | 3 | Q RAmdeg | 1.0 | Q DEmdeg | 2.2 | Q pmRA | 1.0 | ||||
Q pmDE | 2.2 | BTmag | 10.098 | E BTmag | 0.027 | VTmag | 8.754 | ||||
E VTmag | 0.014 | Prox | 52 | TYC | T | HIP | 89603 | ||||
CCDM | A | RAdeg | 274.27908972 | DEdeg | 40.25584639 | EpRA 1990 | 1.52 | ||||
EpDE 1990 | 1.64 | E RAdeg | 9.8 | E DEdeg | 9.4 | Posflg | |||||
Corr | 0.1 |
SAO | 47358 | DelFlag | RA1950 | PmRA1950 | -0.0003 | ||||||
DE1950 | PmDE1950 | 0.029 | Vmag | 8.5 | SpType | K0 | |||||
Double code | Source | 70 | CatNum | 24972 | DM | BD+40 3331 | |||||
DMcomp | BDsup | HD | 168295 | M HD | 0 | ||||||
GC | 24972 | RA1950rad | 4.77998835 | DE1950rad | 0.70224819 | PmRA2000 | 0.0001 | ||||
PmDE2000 | 0.029 |
Catalog | H | HIP | 89603 | Proxy | H | RAhms | 18 17 06.98 | ||||
DEdms | +40 15 21.0 | Vmag | 8.33 | VarFlag | R Vmag | H | |||||
RAdeg | 274.279 | DEdeg | 40.2558 | AstroRef | A | Plx | 4.4 | ||||
CCDM | 18171+4015 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | AB | |||||
Theta | 69 | Rho | 5.171 | HD | 168295 | BD | BD+40 3331 | ||||
CD | CP | Dm number | +40 3331 | VIred | 1.04 | ||||||
SpType | K0... | R SpType | Coord arcsec 2000 | 181706.98+401521.0 |
HIP | 89603 | Sn | 15 | So | 3 | Nc | 2 | ||||
RArad | 4.7870731749 | DErad | 0.7025970372 | Plx | 3.63 | PmRA | 3.01 | ||||
PmDE | 20.12 | E RArad | 0.64 | E DErad | 0.72 | E Plx | 0.82 | ||||
E pmRA | 0.59 | E pmDE | 0.96 | Hpmag | 8.4899 | E Hpmag | 0.0013 | ||||
SHp | 0.017 | VA | 0 | BV | 0.929 | E BV | 0.021 | ||||
VI | 0.92 |
Ccdm | 18171+4015 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 0.94 | DDEs | 21.8 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 8.8 | Sp | K0 | PmNote | * | ||||
PmRA | -3 | PmDE | 30 | Dm number | +40 3331 | Cat1 | BD | ||||
Name2 | 47358 | Cat2 | SAO | HD | 168295 | M HD | |||||
ADS BDS | A11238 | M ADS BDS | N IDS | IDS | 18139N4013A | ||||||
HIC | 89603 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 181707.30+401523.0 | Mag | 9.75 | PmRA | 2.00 | ||||
PmDE | 20.0 | Tycho2 | 3107-02469-1 | Calc delta mag | 1 | Calc coord | yes |
Tycho2 | 3107-02469-1 | Pflag | RAmdeg | 274.28090599 | DEmdeg | 40.25640978 | |||||
PmRA | 8.5 | PmDE | 22.3 | E RAmdeg | 20 | E DEmdeg | 17 | ||||
E pmRA | 1.8 | E pmDE | 1.7 | EpRAm | 1990.08 | EpDEm | 1990.62 | ||||
Num | 3 | Q RAmdeg | 0.6 | Q DEmdeg | 0.1 | Q pmRA | 0.5 | ||||
Q pmDE | 0.1 | BTmag | 10.461 | E BTmag | 0.035 | VTmag | 9.750 | ||||
E VTmag | 0.028 | Prox | 52 | TYC | T | HIP | 89603 | ||||
CCDM | B | RAdeg | 274.28087972 | DEdeg | 40.25635806 | EpRA 1990 | 1.47 | ||||
EpDE 1990 | 1.66 | E RAdeg | 20.2 | E DEdeg | 17.2 | Posflg | |||||
Corr | 0.2 |
Ccdm | 18171+4015 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | STF2304 | DRAs | DDEs | |||||||
R dRAs | Year | 1830 | Theta | 069 | Rho | 5.1 | |||||
Obs | 9 | Vmag | 10.1 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A11238 | M ADS BDS | N IDS | IDS | 18139N4013B | ||||||
HIC | 89603 |