Coord 2000 | 18521+5120 | Discov num | STF2416 | Comp | AB | Coord arcsec 2000 | 18 52 08.85 +51 19 42.8 | ||||
Date first | 1830 | Date last | 2020 | Obs | 33 | ||||||
Pa first | 157 | Pa last | 157.4 | P.A. Now (θ) | 157.4° | ||||||
Sep first | 15.6 | Sep last | 20.27 | Sep. Now (ρ) | 20.27" | ||||||
Mag pri | 8.67 | Mag sec | 11.17 | delta mag (ΔM) | 2.5 | Spectral class | G0 (yellow) | ||||
Pri motion ra | -001 | Sec motion ra | +003 | ||||||||
Pri motion dec | +010 | Sec motion dec | -012 | ||||||||
Notes | U (Proper motion indicates non-physical) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | HD 175308 | 31225 | 18 52 09 +51 19 43 | STF 2416 AB | 2020 | 33 | 157 | 20.3 | 8.67 | 11.17 | 2.50 | <=== | |
Show | 31225 | 18 52 09 +51 19 43 | STF 2416 AC | 2020 | 23 | 39 | 122.5 | 8.67 | 9.41 | 0.74 |
Name | HD 175308 | Constellation | Draco | SAO | 31225 | Tycho2 | 3552-00143-1 | ||||
Gaia DR2 | 2144476384916929280 | HD | 175308 | GC | 25912 |
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 |
18521+5120 | STF2416 | AB | 2006 | 15 | 157 | 20.0 | 8.67 | 11.17 | G0 | LD | 185208.85+511942.8 |
18521+5120 | STF2416 | AB | 2008 | 16 | 158 | 20.4 | 8.67 | 11.17 | G0 | LD | 185208.85+511942.8 |
18521+5120 | STF2416 | AB | 2010 | 18 | 158 | 19.9 | 8.67 | 11.17 | G0 | LD | 185208.85+511942.8 |
18521+5120 | STF2416 | AB | 2015 | 20 | 158 | 19.9 | 8.67 | 11.17 | G0 | L | 185208.85+511942.8 |
18521+5120 | STF2416 | AB | 2017 | 22 | 159 | 20.2 | 8.67 | 11.17 | G0 | L | 185208.85+511942.8 |
18521+5120 | STF2416 | AB | 2020 | 33 | 157 | 20.3 | 8.67 | 11.17 | G0 | U | 185208.85+511942.8 |
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. |
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A | B | |
B | pa=165.4° sep=19.34" | |
C | pa=27.1° sep=106.43" | pa=21.0° sep=121.56" |
Name | HD 175308 | Coord arcsec 2000 | 185208.85+511942.8 | Mag | 8.67 | Spectral class | G0 (yellow) | ||||
PmRA | -1.00 | PmDE | 10.0 | SAO | 31225 | Tycho2 | 3552-00143-1 | ||||
HD | 175308 | GC | 25912 | DM | BD+51 2444 |
Tycho2 | 3552-00143-1 | Pflag | RAmdeg | 283.03688726 | DEmdeg | 51.32858069 | |||||
PmRA | -0.5 | PmDE | 11.7 | E RAmdeg | 8 | E DEmdeg | 8 | ||||
E pmRA | 1.3 | E pmDE | 1.3 | EpRAm | 1990.83 | EpDEm | 1990.96 | ||||
Num | 8 | Q RAmdeg | 1.5 | Q DEmdeg | 1.0 | Q pmRA | 1.5 | ||||
Q pmDE | 1.0 | BTmag | 9.000 | E BTmag | 0.018 | VTmag | 8.671 | ||||
E VTmag | 0.015 | Prox | 195 | TYC | T | HIP | |||||
CCDM | RAdeg | 283.03688833 | DEdeg | 51.32855389 | EpRA 1990 | 1.61 | |||||
EpDE 1990 | 1.71 | E RAdeg | 7.9 | E DEdeg | 7.5 | Posflg | |||||
Corr | 0.0 |
SAO | 31225 | DelFlag | RA1950 | PmRA1950 | 0.0012 | ||||||
DE1950 | PmDE1950 | 0.014 | Vmag | 8.7 | SpType | G0 | |||||
Double code | Source | 70 | CatNum | 25912 | DM | BD+51 2444 | |||||
DMcomp | BDsup | HD | 175308 | M HD | 0 | ||||||
GC | 25912 | RA1950rad | 4.93465619 | DE1950rad | 0.89476594 | PmRA2000 | 0.0018 | ||||
PmDE2000 | 0.014 |
Coord arcsec 2000 | 185209.37+511924.1 | Mag | 11.17 | PmRA | 3.00 | PmDE | -12.0 | ||||
Tycho2 | 3552-01016-1 | Calc delta mag | 2.5 | Calc coord | yes |
Tycho2 | 3552-01016-1 | Pflag | RAmdeg | 283.04019050 | DEmdeg | 51.32350332 | |||||
PmRA | 2.6 | PmDE | -14.4 | E RAmdeg | 38 | E DEmdeg | 47 | ||||
E pmRA | 2.3 | E pmDE | 2.2 | EpRAm | 1986.00 | EpDEm | 1985.78 | ||||
Num | 4 | Q RAmdeg | 1.6 | Q DEmdeg | 1.5 | Q pmRA | 1.6 | ||||
Q pmDE | 1.5 | BTmag | 11.271 | E BTmag | 0.074 | VTmag | 11.174 | ||||
E VTmag | 0.092 | Prox | 195 | TYC | T | HIP | |||||
CCDM | RAdeg | 283.04019639 | DEdeg | 51.32353083 | EpRA 1990 | 1.62 | |||||
EpDE 1990 | 1.70 | E RAdeg | 49.3 | E DEdeg | 49.8 | Posflg | |||||
Corr | 0.0 |
Coord arcsec 2000 | 185214.02+512117.6 | Mag | 9.41 | PmRA | -15.00 | PmDE | -20.0 | ||||
Calc delta mag | 0.74 | Calc coord | yes |