Coord 2000 | 18309+3840 | Discov num | STF2338 | Comp | AB | Coord arcsec 2000 | 18 30 54.75 +38 39 33.8 | ||||
Date first | 1828 | Date last | 2017 | Obs | 26 | ||||||
Pa first | 302 | Pa last | 300.6 | P.A. Now (θ) | 300.6° | ||||||
Sep first | 10.0 | Sep last | 12.1 | Sep. Now (ρ) | 12.1" | ||||||
Mag pri | 9.30 | Mag sec | 11.20 | delta mag (ΔM) | 1.9 | Spectral class | K2 (yellow-orange) | ||||
Pri motion ra | -011 | Sec motion ra | +000 | ||||||||
Pri motion dec | -007 | Sec motion dec | -009 | ||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 18 30 55 +38 39 34 | STF 2338 AB | 2017 | 26 | 301 | 12.1 | 9.30 | 11.20 | 1.90 | <=== | |||
Show | 18 30 55 +38 39 34 | STF 2338 AC | 2017 | 24 | 206 | 76.4 | 9.30 | 9.62 | 0.32 | ||||
Show | 18 30 55 +38 39 34 | STF 2338 AE | 2017 | 13 | 154 | 51.7 | 9.30 | 13.00 | 3.70 | ||||
Show | 18 30 52 +38 38 25 | STF 2338 CD | 2017 | 6 | 243 | 13.0 | 9.62 | 14.80 | 5.18 | ||||
Show | 18 30 52 +38 38 25 | STF 2338 CE | 2017 | 11 | 69 | 60.7 | 9.62 | 13.00 | 3.38 |
Constellation | Lyra | Tycho2 | 3105-00683-1 | Gaia DR2 | 2108423433003279360 |
discov_num | notes | refcode |
STF2338 | C is the semiregular variable KP Lyr. |
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 |
18309+3840 | STF2338 | AB | 2006 | 16 | 301 | 12.2 | 9.90 | 11.20 | K2 | N D | 183054.75+383933.8 |
18309+3840 | STF2338 | AB | 2012 | 19 | 300 | 12.2 | 9.30 | 11.20 | K2 | N D | 183054.75+383933.8 |
18309+3840 | STF2338 | AB | 2013 | 20 | 300 | 12.1 | 9.30 | 11.20 | K2 | N D | 183054.75+383933.8 |
18309+3840 | STF2338 | AB | 2015 | 21 | 301 | 12.1 | 9.30 | 11.20 | K2 | N | 183054.75+383933.8 |
18309+3840 | STF2338 | AB | 2017 | 22 | 301 | 12.1 | 9.30 | 11.20 | K2 | N | 183054.75+383933.8 |
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 | C | D | |
B | pa=307.1° sep=10.20" | |||
C | pa=206.5° sep=76.57" | pa=199.2° sep=79.08" | ||
D | pa=210.2° sep=86.05" | pa=203.6° sep=87.87" | pa=237.0° sep=10.80" | |
E | pa=159.1° sep=49.71" | pa=153.8° sep=58.62" | pa=67.0° sep=56.47" | pa=65.4° sep=67.13" |
Coord arcsec 2000 | 183054.75+383933.8 | Mag | 9.3 | Spectral class | K2 (yellow-orange) | PmRA | -11.00 | ||||
PmDE | -7.0 | Tycho2 | 3105-00683-1 |
Tycho2 | 3105-00683-1 | Pflag | RAmdeg | 277.72815047 | DEmdeg | 38.65939668 | |||||
PmRA | -14.1 | PmDE | -4.7 | E RAmdeg | 20 | E DEmdeg | 21 | ||||
E pmRA | 2.1 | E pmDE | 2.0 | EpRAm | 1990.01 | EpDEm | 1989.69 | ||||
Num | 6 | Q RAmdeg | 0.9 | Q DEmdeg | 1.4 | Q pmRA | 1.0 | ||||
Q pmDE | 1.4 | BTmag | 10.953 | E BTmag | 0.052 | VTmag | 9.616 | ||||
E VTmag | 0.025 | Prox | 766 | TYC | T | HIP | |||||
CCDM | RAdeg | 277.72819194 | DEdeg | 38.65940750 | EpRA 1990 | 1.62 | |||||
EpDE 1990 | 1.61 | E RAdeg | 19.5 | E DEdeg | 20.8 | Posflg | |||||
Corr | 0.1 |
Coord arcsec 2000 | 183054.06+383940.0 | Mag | 11.2 | PmRA | 0.00 | PmDE | -9.0 | ||||
Calc delta mag | 1.9 | Calc coord | yes |
Var name | KP Lyr | Coord arcsec 2000 | 183051.83+383825.3 | Coord calc | 183051.83+383825.3 | Mag | 9.62 | ||||
Spectral class | Ma (red) | PmRA | 2.00 | PmDE | -7.0 | Tycho2 | 3105-00726-1 | ||||
Calc delta mag | 0.32 |
Tycho2 | 3105-00726-1 | Pflag | RAmdeg | 277.71598541 | DEmdeg | 38.64036481 | |||||
PmRA | -1.9 | PmDE | -4.4 | E RAmdeg | 15 | E DEmdeg | 16 | ||||
E pmRA | 2.0 | E pmDE | 2.0 | EpRAm | 1989.99 | EpDEm | 1990.05 | ||||
Num | 8 | Q RAmdeg | 1.1 | Q DEmdeg | 1.7 | Q pmRA | 1.0 | ||||
Q pmDE | 1.6 | BTmag | 11.050 | E BTmag | 0.055 | VTmag | 9.298 | ||||
E VTmag | 0.020 | Prox | 766 | TYC | T | HIP | |||||
CCDM | RAdeg | 277.71599167 | DEdeg | 38.64037417 | EpRA 1990 | 1.63 | |||||
EpDE 1990 | 1.61 | E RAdeg | 15.8 | E DEdeg | 16.9 | Posflg | |||||
Corr | 0.1 |
Coord arcsec 2000 | 183051.06+383819.4 | Mag | 14.8 | Calc delta mag | 5.5 | Calc coord | yes |
Coord arcsec 2000 | 183056.27+383847.4 | Mag | 13 | Spectral class | V | PmRA | 6.00 | ||||
PmDE | 9.0 | Calc delta mag | 3.7 | Calc coord | yes |