Coord 2000 | 17389+8403 | Discov num | STF2299 | Comp | Coord arcsec 2000 | 17 38 55.61 +84 02 42.9 | |||||
Date first | 1899 | Date last | 2015 | Obs | 21 | ||||||
Pa first | 131 | Pa last | 124.6 | P.A. Now (θ) | 124.6° | ||||||
Sep first | 34.7 | Sep last | 33.83 | Sep. Now (ρ) | 33.83" | ||||||
Mag pri | 9.46 | Mag sec | 9.67 | delta mag (ΔM) | 0.21 | Spectral class | F8 (yellow-white) | ||||
Pri motion ra | -015 | Sec motion ra | -014 | ||||||||
Pri motion dec | +037 | Sec motion dec | +034 | ||||||||
Notes | N (See Notes) |
Constellation | Ursa Minor | Tycho2 | 4647-01220-1 | Gaia DR2 | 1723384528356265984 | DM | BD+84 398 |
discov_num | notes | refcode |
STF2299 | LDS1876. B is BD+84@397. |
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 |
17389+8403 | STF2299 | 2006 | 14 | 125 | 34.0 | 9.46 | 9.67 | F8 | N D | 173855.61+840242.9 | |
17389+8403 | STF2299 | 2013 | 16 | 124 | 33.5 | 9.46 | 9.67 | F8 | N | 173855.61+840242.9 | |
17389+8403 | STF2299 | 2015 | 18 | 125 | 33.8 | 9.46 | 9.67 | F8 | N | 173855.61+840242.9 |
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=171.4° sep=19.43" |
Componente originario normalizzato | AB | Coord arcsec 2000 | 173855.61+840242.9 | Mag | 9.46 | Spectral class | F8 (yellow-white) | ||||
PmRA | -15.00 | PmDE | 37.0 | Tycho2 | 4647-01220-1 | DM | BD+84 397 |
Tycho2 | 4647-01220-1 | Pflag | RAmdeg | 264.73171717 | DEmdeg | 84.04525946 | |||||
PmRA | -15.4 | PmDE | 33.8 | E RAmdeg | 13 | E DEmdeg | 12 | ||||
E pmRA | 1.3 | E pmDE | 1.3 | EpRAm | 1990.14 | EpDEm | 1990.03 | ||||
Num | 8 | Q RAmdeg | 1.2 | Q DEmdeg | 1.0 | Q pmRA | 1.2 | ||||
Q pmDE | 1.0 | BTmag | 10.027 | E BTmag | 0.025 | VTmag | 9.457 | ||||
E VTmag | 0.019 | Prox | 339 | TYC | T | HIP | |||||
CCDM | RAdeg | 264.73205889 | DEdeg | 84.04518167 | EpRA 1990 | 1.67 | |||||
EpDE 1990 | 1.68 | E RAdeg | 12.5 | E DEdeg | 12.9 | Posflg | |||||
Corr | 0.0 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 173857.47+840223.7 | Mag | 9.67 | PmRA | -14.00 | ||||
PmDE | 34.0 | DM | BD+84 398 | Calc delta mag | 0.21 | Calc coord | yes |