Coord 2000 | 20257-2341 | Discov num | DAW 227 | Comp | AC | Coord arcsec 2000 | 20 25 42.87 -23 40 45.8 | ||||
Date first | 1919 | Date last | 2020 | Obs | 4 | ||||||
Pa first | 61 | Pa last | 56 | P.A. Now (θ) | 56° | ||||||
Sep first | 19.2 | Sep last | 19.68 | Sep. Now (ρ) | 19.68" | ||||||
Mag pri | 11.37 | Mag sec | 13.10 | delta mag (ΔM) | 1.73 | Spectral class | |||||
Pri motion ra | -023 | Sec motion ra | -020 | ||||||||
Pri motion dec | -044 | Sec motion dec | -023 | ||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 20 25 43 -23 40 46 | HJ 2957 AB | 2020 | 7 | 276 | 15.0 | 11.37 | 11.73 | 0.36 | ||||
Show | 20 25 43 -23 40 46 | DAW 227 AC | 2020 | 4 | 56 | 19.7 | 11.37 | 13.10 | 1.73 | <=== |
Constellation | Capricornus | Tycho2 | 6907-00688-1 | Gaia DR2 | 6849538531413344384 |
refcode | metd | author | reference |
Daw1918a | Ma - | Dawson, B.H. | . |
Daw1918a | Pub. La Plata Obs. 4, Pt.1, 1918 | ||
Daw1918b | Ma - | Dawson, B.H. (measure by Chaves, A.J.) | . |
Daw1918b | Pub. La Plata Obs. 4, Pt.1, 1918 | ||
Daw1919 | orb - | Dawson, B.H. | 1919AJ.....32..109D |
Daw1919 | AJ 32, 109, 1919 | ||
Daw1920 | orb - | Dawson, B.H. | 1920AJ.....32..141D |
Daw1920 | AJ 32, 141, 1920 | ||
Daw1920b | orb - | Dawson, B.H. | 1920AJ.....32..161D |
Daw1920b | AJ 32, 161, 1920 | ||
Daw1922 | Ma - | Dawson, B.H. | . |
Daw1922 | Pub. La Plata Obs. 4, Pt.2, 1922 | ||
Daw1922b | orb - | Dawson, B.H. | 1922AJ.....34...17D |
Daw1922b | AJ 34, 17, 1922 | ||
Daw1924a | Ma - | Dawson, B.H. | 1924AJ.....35..147D |
Daw1924a | AJ 35, 147, 1924 (DAW 112 - 158; data also in Daw1937) | ||
Daw1924b | orb - | Dawson, B.H. | 1924AJ.....36...23D |
Daw1924b | AJ 36, 23, 1924 | ||
Daw1926 | orb - | Dawson, B.H. | 1926AJ.....36..181D |
Daw1926 | AJ 36, 181, 1926 | ||
Daw1927A | Ma - | Dawson, B.H. | 1927sdsc.book...... |
Daw1927A | cited in SDS (Southern Double Star Cat.), 1927 | ||
Daw1933 | orb - | Dawson, B.H. | 1933AJ.....43...15D |
Daw1933 | AJ 43, 15, 1933 | ||
Daw1937 | Ma - | Dawson, B.H. | . |
Daw1937 | Pub. La Plata Obs. 6, 85, 1937 | ||
Daw9999 | Ma - | Dawson, B.H. | ................... |
Daw9999 | Unpublished, manuscript or reference not found. | ||
HJ_1826 | Mb - | Herschel, J.F.W. | 1826MmRAS...2..459H |
HJ_1826 | MemRAS 2, 459, 1826 | ||
HJ_1829a | Mb - | Herschel, J.F.W. | 1829MmRAS...3...47H |
HJ_1829a | MemRAS 3, 47, 1829 | ||
HJ_1829b | Mb - | Herschel, J.F.W. | 1829MmRAS...3..177H |
HJ_1829b | MemRAS 3, 177, 1829 | ||
HJ_1831 | Ma - | Herschel, J.F.W. | 1831MmRAS...4..331H |
HJ_1831 | +Mb | MemRAS 4, part 2, 331, 1831 | |
HJ_1833a | Ma - | Herschel, J.F.W. | 1833MmRAS...5...13H |
HJ_1833a | +Mb | MemRAS 5, 13, 1833 | |
HJ_1833b | orb - | Herschel, J.F.W. | 1833MmRAS...5..171H |
HJ_1833b | MemRAS 5, 171, 1833 | ||
HJ_1833c | Mb - | Herschel, J.F.W. | 1833MmRAS...6....1H |
HJ_1833c | MemRAS 6, 1, 1833 | ||
HJ_1833d | orb - | Herschel, J.F.W. | 1833MmRAS...6..149H |
HJ_1833d | MemRAS 6, 149, 1833 | ||
HJ_1835 | Ma - | Herschel, J.F.W. | 1835MmRAS...8...37H |
HJ_1835 | +Mb | MemRAS 8, 37, 1835 | |
HJ_1836 | Mb - | Herschel, J.F.W. | 1836MmRAS...9..193H |
HJ_1836 | MemRAS 9, 193, 1836 | ||
HJ_1847a | Ma j | Herschel, J.F.W. | . |
HJ_1847a | +Mb | Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838) | |
HJ_1847b | Ma j | Herschel, J.F.W. | . |
HJ_1847b | Cape Results, London, 1847 | ||
HJ_1850 | orb - | Herschel, J.F.W. | 1850MmRAS..18...47H |
HJ_1850 | MemRAS 18, 47, 1850 | ||
HJ_1870 | Mb - | Herschel, J.F.W. | 1870MmRAS..38....1H |
HJ_1870 | MemRAS 38, 1, 1870 | ||
HJ_1874A | - | Herschel, J.F.W. | 1874MNRAS..35...28B |
HJ_1874A | cited by Burnham (MNRAS 35, 28, 1874) | ||
HJ_1875A | Ma - | Herschel, J.F.W. | 1875AN.....85..323D |
HJ_1875A | +Mb | cited by Doberck, 1875 (see Dob1875b,f,g,h) | |
HJ_1880A | Ma - | Herschel, J.F.W. | 1880Obs.....3..508G |
HJ_1880A | +Mb | cited by Gledhill (Obs 3, 508, 1880) | |
HJ_1880B | Mb - | Herschel, J.F.W. | 1880MNRAS..40..497B |
HJ_1880B | cited by Burnham (MNRAS 40, 497, 1880) | ||
HJ_1897A | Ma j | Herschel, J.F.W. | 1897MNRAS..57..541S |
HJ_1897A | cited by See (MNRAS 57, 541, 1897) | ||
HJ_1905A | Ma - | Herschel, J.F.W. | 1905LicOB...3..147A |
HJ_1905A | +Mb | cited by Aitken (Lick Obs. Bull. 3, 147, 1905) | |
HJ_1906A | Ma - | Herschel, J.F.W. | 1906MmRAS..56....1L |
HJ_1906A | +Mb | cited by Lewis (MemRAS 56, 1, 1906) | |
HJ_1906B | Ma - | Herschel, J.F.W. | 1906QB821.B972..... |
HJ_1906B | +Mb | cited in BDS (Burnham Double Star Cat.), 1906 | |
HJ_1927A | Mb - | Herschel, J.F.W. | 1927sdsc.book...... |
HJ_1927A | cited in SDS (Southern Double Star Catalog), 1927 | ||
HJ_1932A | Mb - | Herschel, J.F.W. | 1932QB821.A43...... |
HJ_1932A | cited in ADS (Aitken Double Star Cat.), 1932 | ||
HJ_9999 | M j | Herschel, J.F.W. | ................... |
HJ_9999 | +Ma | Unpublished, manuscript or reference not found. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
20257-2341 | DAW 227 | AC | 1998 | 2 | 57 | 19.6 | 11.37 | 13.10 | D | 202542.87-234045.8 | |
20257-2341 | DAW 227 | AC | 1999 | 3 | 57 | 19.6 | 11.37 | 13.10 | D | 202542.87-234045.8 | |
20257-2341 | DAW 227 | AC | 2020 | 4 | 56 | 19.7 | 11.37 | 13.10 | 202542.87-234045.8 |
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=276.0° sep=13.73" | |
C | pa=53.6° sep=18.56" | pa=71.5° sep=30.16" |
Coord arcsec 2000 | 202542.87-234045.8 | Mag | 11.37 | PmRA | -23.00 | PmDE | -44.0 | ||||
Tycho2 | 6907-00688-1 |
Tycho2 | 6907-00688-1 | Pflag | RAmdeg | 306.42863815 | DEmdeg | -23.67939480 | |||||
PmRA | -21.6 | PmDE | -45.4 | E RAmdeg | 65 | E DEmdeg | 78 | ||||
E pmRA | 2.5 | E pmDE | 2.4 | EpRAm | 1982.01 | EpDEm | 1974.94 | ||||
Num | 4 | Q RAmdeg | 0.8 | Q DEmdeg | 0.7 | Q pmRA | 0.8 | ||||
Q pmDE | 0.7 | BTmag | 12.111 | E BTmag | 0.162 | VTmag | 11.366 | ||||
E VTmag | 0.117 | Prox | 147 | TYC | HIP | ||||||
CCDM | RAdeg | 306.42869250 | DEdeg | -23.67928778 | EpRA 1990 | 1.68 | |||||
EpDE 1990 | 1.44 | E RAdeg | 68.7 | E DEdeg | 87.7 | Posflg | |||||
Corr | -0.2 |
Ccdm | 20257-2341 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 0.85 | DDEs | 15.3 | ||||||
R dRAs | 66 | Year | Theta | Rho | |||||||
Obs | 3 | Vmag | 10.5 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | -2416031 | Cat1 | CD | ||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | B10172 | M ADS BDS | N IDS | IDS | 20198S2400A | ||||||
HIC |
Coord arcsec 2000 | 202541.88-234044.4 | Mag | 11.73 | PmRA | -11.00 | PmDE | -17.0 | ||||
Tycho2 | 6907-00756-1 | Calc delta mag | 0.36 | Calc coord | yes |
Tycho2 | 6907-00756-1 | Pflag | RAmdeg | 306.42421756 | DEmdeg | -23.67915193 | |||||
PmRA | -3.8 | PmDE | -17.9 | E RAmdeg | 96 | E DEmdeg | 122 | ||||
E pmRA | 5.1 | E pmDE | 5.4 | EpRAm | 1986.12 | EpDEm | 1982.84 | ||||
Num | 2 | Q RAmdeg | Q DEmdeg | Q pmRA | |||||||
Q pmDE | BTmag | 13.348 | E BTmag | 0.430 | VTmag | 11.734 | |||||
E VTmag | 0.182 | Prox | 147 | TYC | HIP | ||||||
CCDM | RAdeg | 306.42422750 | DEdeg | -23.67910917 | EpRA 1990 | 1.70 | |||||
EpDE 1990 | 1.42 | E RAdeg | 99.5 | E DEdeg | 130.0 | Posflg | |||||
Corr | -0.1 |
Ccdm | 20257-2341 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | HJ 2957 | DRAs | -0.19 | DDEs | 15.6 | |||||
R dRAs | 66 | Year | 1919 | Theta | 267 | Rho | 15.9 | ||||
Obs | 1 | Vmag | 11.1 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | B10172 | M ADS BDS | N IDS | IDS | 20198S2400B | ||||||
HIC |
Coord arcsec 2000 | 202543.96-234034.8 | Mag | 13.1 | PmRA | -20.00 | PmDE | -23.0 | ||||
Calc delta mag | 1.73 | Calc coord | yes |
Ccdm | 20257-2341 | RComp | Comp | C | Note1 | ||||||
Note2 | Discov num | DAW | DRAs | 2.10 | DDEs | 25.9 | |||||
R dRAs | 66 | Year | 1919 | Theta | 061 | Rho | 19.2 | ||||
Obs | 1 | Vmag | 12.2 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | M ADS BDS | N IDS | IDS | 20198S2400C | |||||||
HIC |