21049+1227 HJ 1608 AB (HD 200745)
21h 04m 52.61s +12° 26' 41.3" P.A. 257.00 sep 20.1 mag 7.68,11.39 Sp F2V dist. 90.17 pc (294.13 l.y.)
| Coord 2000 | 21049+1227 | Discov num | HJ 1608 | Comp | AB | Coord arcsec 2000 | 21 04 52.61 +12 26 41.3 | ||||
| Date first | 1828 | Date last | 2016 | Obs | 24 | ||||||
| Pa first | 256 | Pa last | 257.2 | P.A. Now (θ) | 257.2° | ||||||
| Sep first | 5.0 | Sep last | 20.083 | Sep. Now (ρ) | 20.083" | ||||||
| Mag pri | 7.68 | Mag sec | 11.39 | delta mag (ΔM) | 3.71 | Spectral class | F2V (yellow-white) | ||||
| Pri motion ra | -029 | Sec motion ra | -033 | ||||||||
| Pri motion dec | -026 | Sec motion dec | -025 | ||||||||
| Notes | V (Proper motion indicates physical) | ||||||||||
21049+1227 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | HD 200745 | 106819 | 21 04 53 +12 26 41 | HJ 1608 AB | 2016 | 24 | 257 | 20.1 | 7.68 | 11.39 | 3.71 | <=== | |
| Show | 106819 | 21 04 53 +12 26 41 | WAL 135 AC | 2015 | 8 | 284 | 35.1 | 7.68 | 13.90 | 6.22 | |||
| Show | 106819 | 21 04 53 +12 26 41 | FYM 53 AD | 2015 | 7 | 57 | 51.2 | 7.68 | 14.20 | 6.52 | |||
| Show | 106819 | 21 04 53 +12 26 41 | FYM 53 AE | 2015 | 4 | 61 | 67.6 | 7.68 | 14.00 | 6.32 | |||
| Show | 106819 | 21 04 53 +12 26 41 | FYM 53 AF | 2015 | 7 | 277 | 56.0 | 7.68 | 14.62 | 6.94 |
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name | HD 200745 | Constellation | Delphinus | SAO | 106819 | HIP | 104057 | ||||
| Tycho2 | 1112-02069-1 | Gaia DR2 | 1757415169150798464 | HD | 200745 | BD | BD+11 4470 | ||||
| Distance | 90.17 | Distance ly | 294.13 |
WDS 21049+1227 HJ 1608 AB (HD 200745) : NOTES
REFERENCES
| refcode | metd | author | reference |
| FyM2013 | C j | Fay, M. | 2013OED....10...38F |
| FyM2013 | El Observador de Estrellas Dobles, Issue #10, 38, 2013 | ||
| FyM2013b | C j | Fay, M. | . |
| FyM2013b | Il Bollettino Delle Stelle Doppie 5, 10, 2013 | ||
| FyM2013c | C j | Fay, M. | . |
| FyM2013c | Il Bollettino Delle Stelle Doppie 6, 40, 2013 | ||
| FyM2013d | C j | Fay, M. | . |
| FyM2013d | Il Bollettino Delle Stelle Doppie 6, 46, 2013 | ||
| FyM2014 | C j | Fay, M. | . |
| FyM2014 | Il Bollettino Delle Stelle Doppie 9, 36, 2014 | ||
| FyM2014 | (Italian translation on page 21 of the same publication) | ||
| FyM2014b | C - | Fay, M. | . |
| FyM2014b | private communication | ||
| FyM2014c | C j | Fay, M. | 2014OED....13...19F |
| FyM2014c | El Observador de Estrellas Dobles, Issue #13, 19, 2014 | ||
| FyM2015a | C j | Fay, M. | 2015OED....14...48F |
| FyM2015a | El Observador de Estrellas Dobles, Issue #14, 48, 2015 | ||
| FyM2015b | C j | Fay, M. | 2015OED....15...48F |
| FyM2015b | El Observador de Estrellas Dobles, Issue #15, 48, 2015 | ||
| FyM2016a | C - | Fay, M. | 2016OED....16...94F |
| FyM2016a | El Observador de Estrellas Dobles, Issue #16, 94, 2016 | ||
| FyM2016b | C j | Fay, M. | 2016OED....16..132F |
| FyM2016b | El Observador de Estrellas Dobles, Issue #16, 132, 2016 | ||
| FyM2016c | C j | Fay, M. | 2016OED....17...14F |
| FyM2016c | El Observador de Estrellas Dobles, Issue #17, 14, 2016 | ||
| FyM2017a | C - | Fay, M. | . |
| FyM2017a | Il Bollettino Delle Stelle Doppie 20, 51, 2017 | ||
| FyM2017a | (Italian translation on page 29 of the same publication) | ||
| FyM2017b | C j | Fay, M. | 2017OED....19...71F |
| FyM2017b | El Observador de Estrellas Dobles, Issue #19, 71, 2017 | ||
| 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. | |
| Wal1934 | Ma j | Wallenquist, A. | 1934AnBos...6....3W |
| Wal1934 | Ann. Bosscha Obs. Lembang 6, Pt.2, 1934 | ||
| Wal1944a | Zw - | Wallenquist, A. | 1954MeUpp...85..... |
| Wal1944a | Medd. Uppsala Obs. #85, 1944 | ||
| Wal1944a | (Visual measures with wedge photometer attached to 14-inch refractor. No dates | ||
| Wal1944a | given for measures; default date = decade of publication added.) | ||
| Wal1944b | Zw - | Wallenquist, A. | 1954MeUpp...87..... |
| Wal1944b | Medd. Uppsala Obs. #87, 1944 | ||
| Wal1944b | (Visual measures with wedge photometer attached to 14-inch refractor. No dates | ||
| Wal1944b | given for measures; default date = decade of publication added.) | ||
| Wal1947 | Zw - | Wallenquist, A. | 1947UppAn...2....2W |
| Wal1947 | Ann. Uppsala Astron. Obs. 2, No.2, 1947 | ||
| Wal1947 | (A catalogue containing results of the two prior series, plus additional measures | ||
| Wal1947 | with the 14-inch refractor and wedge photometer) | ||
| Wal1948 | Zw - | Wallenquist, A. | 1948UppAn...2....3W |
| Wal1948 | Ann. Uppsala Astron Obs. 2, #3, 1948 | ||
| Wal1948 | (Visual measures of southern double stars made with 17-inch refractor of La Plata | ||
| Wal1948 | and wedge photometer. No dates listed; default date = decade of publication added) | ||
| Wal1950 | Zd - | Wallenquist, A. | 1950MeUpp..103..... |
| Wal1950 | Medd. Uppsala Obs. #103, 1950 | ||
| Wal1954 | Zw - | Wallenquist, A. | 1954UppAn...4Q....W |
| Wal1954 | Ann. Uppsala Astron Obs. 4, #2, 1954 | ||
| Wal1954 | ("General Catalogue of Differences in Magnitude of Double Stars". Weighted mean | ||
| Wal1954 | values from numerous sources) | ||
| Wal1958 | Zw - | Wallenquist, A. | 1958MeUpp..118..... |
| Wal1958 | Medd. Uppsala Obs. #118, 1958 |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21049+1227 | HJ 1608 | AB | 2006 | 11 | 257 | 20.1 | 7.68 | 11.39 | F2V | D | 210452.61+122641.3 |
| 21049+1227 | HJ 1608 | AB | 2012 | 16 | 257 | 20.0 | 7.68 | 11.39 | F2V | VD | 210452.61+122641.3 |
| 21049+1227 | HJ 1608 | AB | 2013 | 18 | 257 | 20.0 | 7.68 | 11.39 | F2V | V | 210452.61+122641.3 |
| 21049+1227 | HJ 1608 | AB | 2015 | 19 | 257 | 20.2 | 7.68 | 11.39 | F2V | V | 210452.61+122641.3 |
| 21049+1227 | HJ 1608 | AB | 2016 | 24 | 257 | 20.1 | 7.68 | 11.39 | F2V | V | 210452.61+122641.3 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 21049+1227 HJ 1608 AB (HD 200745) : VISUAL OBSERVATIONS REPORTS
WDS 21049+1227 HJ 1608 AB (HD 200745) : MEASURES
WDS 21049+1227 (HD 200745) : VIRTUAL EYEPIECE
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WDS 21049+1227 (HD 200745) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
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Error -22130
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Error -27220
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Error -27220
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