Coord 2000 | 18394-0239 | Discov num | BRT1948 | Comp | Coord arcsec 2000 | 18 39 21.80 -02 38 36.3 | |||||
Date first | 1931 | Date last | 2016 | Obs | 7 | ||||||
Pa first | 251 | Pa last | 248.2 | P.A. Now (θ) | 248.2° | ||||||
Sep first | 3.3 | Sep last | 4.092 | Sep. Now (ρ) | 4.092" | ||||||
Mag pri | 9.80 | Mag sec | 12.30 | delta mag (ΔM) | 2.5 | Spectral class | F0 (yellow-white) | ||||
Pri motion ra | -009 | Sec motion ra | |||||||||
Pri motion dec | -014 | Sec motion dec | |||||||||
Notes |
Name | HD 172274 | Constellation | Serpens | SAO | 142473 | Tycho2 | 5117-00577-1 | ||||
Gaia DR2 | 4259411705660502784 | HD | 172274 |
refcode | metd | author | reference |
Brt1926a | Pa - | Barton, S.G. | 1926AJ.....36..155B |
Brt1926a | AJ 36, 155, 1926 (BRT 1 - BRT 62) | ||
Brt1926b | Pa j | Barton, S.G. | 1926AJ.....37...57B |
Brt1926b | AJ 37, 57, 1926 (BRT 63 - BRT 116) | ||
Brt1928 | Pa - | Barton, S.G. | 1928AJ.....38..168B |
Brt1928 | AJ 38, 168, 1928 (BRT 117 - BRT 230) | ||
Brt1929a | Pa - | Barton, S.G. | 1929AN....235..425B |
Brt1929a | AN 235, 425, 1929 (BRT 294 - BRT 322) | ||
Brt1929b | Pa - | Barton, S.G. | 1929AJ.....39...93B |
Brt1929b | AJ 39, 93, 1929 (BRT 231 - BRT 293) | ||
Brt1929c | Ma j | Barton, S.G. | 1929AJ.....39..120B |
Brt1929c | AJ 39, 120, 1929 | ||
Brt1930 | Pa - | Barton, S.G. | 1930AJ.....40..181B |
Brt1930 | AJ 40, 181, 1930 (BRT 323 - BRT 348) | ||
Brt1931 | Pa - | Barton, S.G. (BRT 349 - BRT 562) | 1931AJ.....41...35B |
Brt1931 | AJ 41, 35, 1931 (no measures for BRT 529 - BRT 562) | ||
Brt1932a | Pa - | Barton, S.G. | 1932AJ.....42...93B |
Brt1932a | AJ 42, 93, 1932 (BRT 604 - BRT 636) | ||
Brt1932b | Ma - | Barton, S.G. | 1932PFAO....5a...1B |
Brt1932b | +Pa | Pub. Univ. Penn. 5, Pt.1, Sec.2, 1932 (BRT 563 - BRT 603, BRT1928, etc.) | |
Brt1932C | Ma - | Barton, S.G. | 1932QB821.A43...... |
Brt1932C | cited in ADS (Aitken Double Star Cat.), 1932 | ||
Brt1933 | Pa - | Barton, S.G. | 1933AN....250...49B |
Brt1933 | AN 250, 49, 1933 | ||
Brt1933 | (BRT 637 - BRT1134; very approximate dates added for pairs listed with only | ||
Brt1933 | secondary magnitudes and no astrometry) | ||
Brt1934 | Pa - | Barton, S.G. | 1934AJ.....43..119B |
Brt1934 | +Ma | AJ 43, 119, 1934 | |
Brt1935a | Pa - | Barton, S.G. | 1935AJ.....44..105B |
Brt1935a | +Ma | AJ 44, 105, 1935 | |
Brt1935b | Pa - | Barton, S.G. | 1935AN....256..357B |
Brt1935b | AN 256, 357, 1935 | ||
Brt1936a | Ma - | Barton, S.G. | 1936AJ.....45...33B |
Brt1936a | +Pa | AJ 45, 33, 1936 | |
Brt1936b | Pa - | Barton, S.G. | 1936AJ.....45...99B |
Brt1936b | +Ma | AJ 45, 99, 1936 | |
Brt1937a | Pa - | Barton, S.G. | 1937AN....263..347B |
Brt1937a | AN 263, 347, 1937 | ||
Brt1937b | Pa - | Barton, S.G. | 1937AN....263..383B |
Brt1937b | AN 263, 383, 1937 | ||
Brt1938 | Ma - | Barton, S.G. | 1938AJ.....47..133B |
Brt1938 | +Pa | AJ 47, 133, 1938 | |
Brt1939a | Ma - | Barton, S.G. | 1939PFAO....5b...1B |
Brt1939a | +Pa | Pub. Univ. Penn. 5, Pt.2, Sec.2, 1939 | |
Brt1939b | Pa - | Barton, S.G. | 1939AJ.....48..145B |
Brt1939b | +Ma | AJ 48, 145, 1939 | |
Brt1941 | Pa - | Barton, S.G. | 1941PASP...55..339B |
Brt1941 | PASP 55, 339, 1941 | ||
Brt1942 | Pa - | Barton, S.G. | 1942AJ.....50...11B |
Brt1942 | AJ 50, 11, 1942 | ||
Brt1947 | Ma - | Barton, S.G. | 1947AJ.....52..178B |
Brt1947 | +Pa | AJ 52, 178, 1947 | |
Brt1949 | Ma - | Barton, S.G. | 1949PFAO....7a...1B |
Brt1949 | Pub. Univ. Penn. 7, Pt.1, Sec.1, 1949 | ||
Brt1951 | Pa - | Barton, S.G. | 1951AJ.....55..218B |
Brt1951 | AJ 55, 218, 1951 | ||
Brt1957 | Ma - | Barton, S.G. | 1957QB4.P5v7ps3.... |
Brt1957 | Pub. Univ. Penn. 7, Pt.3, 15, 1957 | ||
Brt9999 | Ma - | Barton, S.G. | ................... |
Brt9999 | +Pa | Unpublished, manuscript or reference not found. | |
Brt2002A | Ma - | Barton, S.G. | 2002yCat.1275....0D |
Brt2002A | +Pa | cited in CCDM |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
18394-0239 | BRT1948 | 2003 | 5 | 247 | 4.1 | 9.80 | 12.30 | F0 | D | 183921.80-023836.3 | |
18394-0239 | BRT1948 | 2015 | 6 | 248 | 4.1 | 9.80 | 12.30 | F0 | 183921.80-023836.3 | ||
18394-0239 | BRT1948 | 2016 | 7 | 248 | 4.1 | 9.80 | 12.30 | F0 | 183921.80-023836.3 |
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=248.2° sep=4.09" |
Componente originario normalizzato | AB | Name | HD 172274 | Coord arcsec 2000 | 183921.80-023836.3 | Mag | 9.8 | ||||
Spectral class | F0 (yellow-white) | PmRA | -9.00 | PmDE | -14.0 | SAO | 142473 | ||||
Tycho2 | 5117-00577-1 | HD | 172274 | DM | BD-02 4687 |
Tycho2 | 5117-00577-1 | Pflag | RAmdeg | 279.84085208 | DEmdeg | -2.64342997 | |||||
PmRA | 3.7 | PmDE | -7.8 | E RAmdeg | 13 | E DEmdeg | 16 | ||||
E pmRA | 1.1 | E pmDE | 1.2 | EpRAm | 1988.40 | EpDEm | 1986.63 | ||||
Num | 9 | Q RAmdeg | 2.2 | Q DEmdeg | 0.9 | Q pmRA | 2.4 | ||||
Q pmDE | 1.0 | BTmag | 10.083 | E BTmag | 0.028 | VTmag | 9.602 | ||||
E VTmag | 0.026 | Prox | 999 | TYC | T | HIP | |||||
CCDM | RAdeg | 279.84085000 | DEdeg | -2.64341139 | EpRA 1990 | 1.88 | |||||
EpDE 1990 | 1.82 | E RAdeg | 14.2 | E DEdeg | 17.5 | Posflg | |||||
Corr | -0.3 |
SAO | 142473 | DelFlag | RA1950 | PmRA1950 | -0.0008 | ||||||
DE1950 | PmDE1950 | 0.002 | Vmag | 9.1 | SpType | F0 | |||||
Double code | Source | 27 | CatNum | 6257 | DM | BD-02 4687 | |||||
DMcomp | BDsup | HD | 172274 | M HD | 0 | ||||||
GC | RA1950rad | 4.87273623 | DE1950rad | -0.04693574 | PmRA2000 | -0.0006 | |||||
PmDE2000 | 0.002 |
Ccdm | 18394-0239 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | -2.25 | DDEs | 24.7 | ||||||
R dRAs | 10 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 9.8 | Sp | F0 | PmNote | * | ||||
PmRA | -12 | PmDE | 2 | Dm number | -02 4687 | Cat1 | BD | ||||
Name2 | 142473 | Cat2 | SAO | HD | 172274 | M HD | |||||
ADS BDS | M ADS BDS | N IDS | IDS | 18341S0244A | |||||||
HIC |
Componente originario normalizzato | AB | Coord arcsec 2000 | 183921.55-023837.8 | Mag | 12.3 | Calc delta mag | 2.5 | ||||
Calc coord | yes |
Ccdm | 18394-0239 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | BRT1948 | DRAs | DDEs | |||||||
R dRAs | Year | 1931 | Theta | 250 | Rho | 3.6 | |||||
Obs | 3 | Vmag | 12.3 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | M ADS BDS | N IDS | IDS | 18341S0244B | |||||||
HIC |