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Current system

20397+4734
A 747 AB

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Binocular doubles
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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20397+4734 A 747 AB

20^h 39^m 42.24^s +47° 34' 26.9" P.A. 104.00 sep 0.3 mag 8.70,9.00 Sp A0

Coord 2000	20397+4734	Discov num	A 747	Comp	AB	Coord arcsec 2000	20 39 42.24 +47 34 26.9
Date first	1904	Date last	2009	Obs	21
Pa first	135	Pa last	103.8	P.A. Now (θ)	103.8°
Sep first	0.3	Sep last	0.303	Sep. Now (ρ)	0.303"
Mag pri	8.70	Mag sec	9.00	delta mag (ΔM)	0.3	Spectral class	A0 (white)
Pri motion ra	+005	Sec motion ra
Pri motion dec	+009	Sec motion dec
Notes

Nature of this double is uncertain.

20397+4734 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		49906	20 39 42 +47 34 27	A 747 AB	2009	21	104	0.3	8.70	9.00	0.30		<===
Show	HD 197117	49906	20 39 42 +47 34 27	ES 90 AB,C	2019	10	141	7.1	8.48	12.00	3.52

Triple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	49906		Tycho2	3578-03166-1		Gaia DR2	2167457999017893504
HD	197117

WDS 20397+4734 A 747 AB : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
A__1895	Ma -	Aitken, R.G.	1895PASP....7..305A
A__1895		PASP 7, 305, 1895 (most data also in A__1914d)	1914PLicO..12....1A
A__1896a	Ma -	Aitken, R.G.	1896AJ.....17...27A
A__1896a		AJ 17, 27, 1896 (most data also in A__1914d)	1914PLicO..12....1A
A__1896b	Ma -	Aitken, R.G.	1896AN....142...77A
A__1896b		AN 142, 77, 1896 (all data also in A__1896a)	1896AJ.....17...27A
A__1896c	Ma -	Aitken, R.G.	1896PASP....8..286A
A__1896c		PASP 8, 286, 1896
A__1896d	Ma -	Aitken, R.G.	1896PASP....8..314A
A__1896d		PASP 8, 314, 1896 (all data also in A__1896a)	1896AJ.....17...27A
A__1897a	Ma -	Aitken, R.G.	1897AN....142..161A
A__1897a		AN 142, 161, 1897 (all data also in A__1896a)	1896AJ.....17...27A
A__1897b	Ma -	Aitken, R.G.	1897AJ.....17...76A
A__1897b		AJ 17, 76, 1897 (all data also in A__1914d)	1914PLicO..12....1A
A__1897c	Ma -	Aitken, R.G.	1897AJ.....18...56A
A__1897c		AJ 18, 56, 1897 (all data also in A__1914d)	1914PLicO..12....1A
A__1897d	Ma j	Aitken, R.G.	1897AN....145..129A
A__1897d		AN 145, 129, 1897 (most data also in A__1914d)	1914PLicO..12....1A
A__1898a	Ma -	Aitken, R.G.	1898AJ.....18..128A
A__1898a		AJ 18, 128, 1898 (all data also in other refs)
A__1898b	Ma j	Aitken, R.G.	1898AJ.....18..161A
A__1898b		AJ 18, 161, 1898 (most data also in other refs)
A__1898b		(erratum AJ 18, 180, 1898)	1898AJ.....18..180A
A__1899	Ma -	Aitken, R.G.	1899PASP...11..128A
A__1899		PASP 11, 128, 1899
A__1899b	Ma j	Aitken, R.G.	1899AN....150..113A
A__1899b		AN 150, 113, 1899
A__1900a	Ma -	Aitken, R.G.	1900AN....152..161A
A__1900a		AN 152, 161, 1900
A__1900b	Ma -	Aitken, R.G.	1900AN....153..369A
A__1900b		AN 153, 369, 1900
A__1900c	Ma -	Aitken, R.G.	1900PASP...12..127A
A__1900c		PASP 12, 127, 1900 (all data also in A__1900b)	1900AN....153..369A
A__1900d	Ma j	Aitken, R.G.	1900AN....152..209A
A__1900d		AN 152, 209, 1900
A__1900e	orb -	Aitken, R.G.	1900PASP...12..103A
A__1900e		PASP 12, 103, 1900
A__1900f	orb -	Aitken, R.G.	1900PASP...12..240A
A__1900f		PASP 12, 240, 1900
A__1900g	Ma j	Aitken, R.G.	1900PASP...12..203A
A__1900g		PASP 12, 203, 1900
A__1901a	Ma j	Aitken, R.G.	1901LicOB...1...14A
A__1901a		Lick Obs. Bull. 1, 14, 1901
A__1901b	Ma j	Aitken, R.G.	1901LicOB...1...66A
A__1901b		Lick Obs. Bull. 1, 66, 1901
A__1901c	orb -	Aitken, R.G.	1901PA......9...57A
A__1901c		Popular Astron. 9, 57, 1901
A__1901d	Ma -	Aitken, R.G.	1901AN....156..321A
A__1901d		AN 156, 321, 1901 (all data also in A__1901a)	1901LicOB...1...14A
A__1901e	Ma -	Aitken, R.G.	1901PASP...13..161A
A__1901e		PASP 13, 161, 1901 (all data also in other refs)
A__1902a	Ma j	Aitken, R.G.	1902LicOB...1..129A
A__1902a		Lick Obs. Bull. 1, 129, 1902
A__1902b	orb -	Aitken, R.G.	1902LicOB...1..190A
A__1902b		Lick Obs. Bull. 1, 190, 1902
A__1902c	orb -	Aitken, R.G.	1902PA.....10..486A
A__1902c		Popular Astron. 10, 486, 1902
A__1902d	orb -	Aitken, R.G.	1902PASP...14..153A
A__1902d		PASP 14, 153, 1902
A__1902e	Ma -	Aitken, R.G.	1902AN....158..245A
A__1902e		AN 158, 245, 1902 (all data also in A__1902a)	1902LicOB...1..129A
A__1903	Ma j	Aitken, R.G.	1903LicOB...2...16A
A__1903		Lick Obs. Bull. 2, 16, 1903
A__1903b	Ma -	Aitken, R.G.	1903LicOB...2...55A
A__1903b	+orb	Lick Obs. Bull. 2, 55, 1903 (all data also in other refs)
A__1903c	orb -	Aitken, R.G.	1903PA.....11...28A
A__1903c		Popular Astron. 11, 28, 1903
A__1904a	Ma j	Aitken, R.G.	1904LicOB...2..139A
A__1904a		Lick Obs. Bull. 2, 139, 1904
A__1904b	Ma -	Aitken, R.G.	1904LicOB...3....6A
A__1904b		Lick Obs. Bull. 3, 6, 1904
A__1904c	Ma -	Aitken, R.G.	1904LicOB...3...61A
A__1904c		Lick Obs. Bull. 3, 61, 1904
A__1905a	Ma -	Aitken, R.G.	1905LicOB...3...88A
A__1905a	+orb	Lick Obs. Bull. 3, 88, 1905 (all data also in other refs)
A__1905b	Ma -	Aitken, R.G.	1905LicOB...3...90A
A__1905b		Lick Obs. Bull. 3, 90, 1905 (all data also in other refs)
A__1905c	orb -	Aitken, R.G.	1905LicOB...3..147A
A__1905c		Lick Obs. Bull. 3, 147, 1905 (all data also in other refs)
A__1905d	orb -	Aitken, R.G.	1905LicOB...3..169A
A__1905d		Lick Obs. Bull. 3, 169, 1905 (orbit catalog)
A__1905e	orb -	Aitken, R.G.	1905PA.....13..190A
A__1905e		Popular Astron. 13, 190, 1905
A__1906a	Ma -	Aitken, R.G.	1906LicOB...4....4A
A__1906a		Lick Obs. Bull. 4, 4, 1906
A__1906B	Ma -	Aitken, R.G.	1906MmRAS..56....1L
A__1906B	+orb	cited by Lewis (MemRAS 56, 1, 1906)
A__1906c	orb -	Aitken, R.G.	1906LicOB...4...75A
A__1906c		Lick Obs. Bull. 4, 75, 1906
A__1906D	Ma -	Aitken, R.G.	1906QB821.B972.....
A__1906D		cited in BDS (Burnham Double Star Cat.), 1906
A__1907a	Ma -	Aitken, R.G.	1907LicOB...4..101A
A__1907a		Lick Obs. Bull. 4, 101, 1907
A__1907b	Ma -	Aitken, R.G.	1907LicOB...4..125A
A__1907b		Lick Obs. Bull. 4, 124, 1907
A__1907c	orb -	Aitken, R.G.	1907LicOB...4..107A
A__1907c		Lick Obs. Bull. 4, 107, 1907 (all data also in other refs)
A__1907d	Ma -	Aitken, R.G.	1907LicOB...4..170A
A__1907d		Lick Obs. Bull. 4, 170, 1907 (all data also in other refs)
A__1907e	orb -	Aitken, R.G.	1907AN....174..217A
A__1907e		AN 174, 217, 1907
A__1907f	Ma -	Aitken, R.G.	1907AN....176..323A
A__1907f		AN 176, 323, 1907 (all data also in other refs)
A__1908a	Ma -	Aitken, R.G.	1908LicOB...4..166A
A__1908a		Lick Obs. Bull. 4, 166, 1908
A__1908b	Ma -	Aitken, R.G.	1908LicOB...5...28A
A__1908b		Lick Obs. Bull. 5, 28, 1908
A__1908c	Ma -	Aitken, R.G.	1908LicOB...5...55A
A__1908c		Lick Obs. Bull. 5, 55, 1908
A__1908d	Ma -	Aitken, R.G.	1908LicOB...5...43A
A__1908d	+orb	Lick Obs. Bull. 5, 43, 1908 (all data also in other refs)
A__1908e	Ma -	Aitken, R.G.	1908PASP...20..185A
A__1908e		PASP 20, 185, 1908 (all data also in other refs)
A__1908f	orb -	Aitken, R.G.	1908PASP...20..267A
A__1908f		PASP 20, 267, 1908
A__1908g	Ma -	Aitken, R.G.	1908PASP...20..290A
A__1908g		PASP 20, 290, 1908 (all data also in other refs)
A__1908h	Ma -	Aitken, R.G.	1908PASP...20..291A
A__1908h		PASP 20, 291, 1908
A__1909a	Ma -	Aitken, R.G.	1909LicOB...5..115A
A__1909a		Lick Obs. Bull. 5, 115, 1909
A__1909b	Ma -	Aitken, R.G.	1909LicOB...5..166A
A__1909b		Lick Obs. Bull. 5, 166, 1909
A__1909c	orb -	Aitken, R.G.	1909PASP...21...83A
A__1909c		PASP 21, 83, 1909
A__1910a	Ma -	Aitken, R.G.	1910LicOB...6...62A
A__1910a		Lick Obs. Bull. 6, 62, 1910
A__1910b	Ma -	Aitken, R.G.	1910LicOB...6...70A
A__1910b		Lick Obs. Bull. 6, 70, 1910
A__1910c	-	Aitken, R.G.	1910LicOB...6....1A
A__1910c		Lick Obs. Bull. 6, 1, 1910 (no data)
A__1910d	Ma -	Aitken, R.G.	1910PASP...22...95A
A__1910d		PASP 22, 95, 1910 (all data also in other refs)
A__1910e	-	Aitken, R.G.	1910PASP...22..137A
A__1910e		PASP 22, 137, 1910 (no data)
A__1910f	Ma -	Aitken, R.G.	1910PASP...22..140A
A__1910f		PASP 22, 140, 1910 (all data also in other refs)
A__1911	Ma -	Aitken, R.G.	1911LicOB...6..163A
A__1911		Lick Obs. Bull. 6, 163, 1911
A__1911b	Ma -	Aitken, R.G.	1911PASP...23..238A
A__1911b		PASP 23, 238, 1911 (all data also in other refs)
A__1912	Ma -	Aitken, R.G.	1912LicOB...7...93A
A__1912		Lick Obs. Bull. 7, 93, 1912
A__1912b	-	Aitken, R.G.	1912LicOB...2....3A
A__1912b		Lick Obs. Bull. 7, 3, 1912 (no data)
A__1912c	-	Aitken, R.G.	1912PASP...24..126A
A__1912c		PASP 24, 126, 1912 (no data)
A__1912d	orb -	Aitken, R.G.	1912PASP...24..165A
A__1912d		PASP 24, 165, 1912
A__1912e	orb -	Aitken, R.G.	1912PASP...24..216A
A__1912e		PASP 24, 216, 1912
A__1912f	Ma -	Aitken, R.G.	1912PASP...24..228A
A__1912f		PASP 24, 228, 1912 (all data also in other refs)
A__1912g	Ma -	Aitken, R.G.	1912PA.....20..643A
A__1912g		Popular Astron. 20, 643, 1912 (all data also in other refs)
A__1913	Ma -	Aitken, R.G.	1913LicOB...7..186A
A__1913		Lick Obs. Bull. 7, 186, 1913
A__1913b	Ma -	Aitken, R.G.	1913PASP...25...41A
A__1913b	+orb	PASP 25, 41, 1913 (all data also in other refs)
A__1914a	Ma -	Aitken, R.G.	1914LicOB...8...52A
A__1914a		Lick Obs. Bull. 8, 52, 1914
A__1914b	Ma -	Aitken, R.G.	1914LicOB...8...93A
A__1914b		Lick Obs. Bull. 8, 93, 1914
A__1914c	Ma -	Aitken, R.G.	1914LicOB...8...96A
A__1914c		Lick Obs. Bull. 8, 96, 1914
A__1914d	Ma j	Aitken, R.G.	1914PLicO..12....1A
A__1914d	+orb	Pub. Lick Obs. 12, 1, 1914
A__1914e	orb -	Aitken, R.G.	1914PLicO..12..100A
A__1914e		Pub. Lick Obs. 12, 100, 1914
A__1914f	orb -	Aitken, R.G.	1914LicOB...8...99A
A__1914f		Lick Obs. Bull. 8, 99, 1914
A__1914g	Ma -	Aitken, R.G.	1914PASP...26...53A
A__1914g		PASP 26, 53, 1914 (all data also in other refs)
A__1914h	Ma -	Aitken, R.G.	1914PASP...26..205A
A__1914h		PASP 26, 205, 1914 (all data also in other refs)
A__1914i	Ma -	Aitken, R.G.	1914PASP...26..208A
A__1914i	+orb	PASP 26, 208, 1914 (all data also in other refs)
A__1915	Ma -	Aitken, R.G.	1915PASP...27..230A
A__1915		PASP 27, 230, 1915 (some data also in other refs)
A__1916a	orb -	Aitken, R.G.	1916PASP...28..121A
A__1916a		PASP 28, 121, 1916
A__1916b	Ma -	Aitken, R.G.	1916PASP...28..276A
A__1916b		PASP 28, 276, 1916 (all data also in other refs)
A__1917a	Ma -	Aitken, R.G.	1917PASP...29..207A
A__1917a		PASP 29, 207, 1917 (all data also in other refs)
A__1917b	Ma -	Aitken, R.G.	1917PASP...29..217A
A__1917b		PASP 29, 217, 1917 (all data also in other refs)
A__1918a	Ma -	Aitken, R.G.	1918LicOB...9..132A
A__1918a		Lick Obs. Bull. 9, 132, 1918
A__1918b	orb -	Aitken, R.G.	1918LicOB...9..184A
A__1918b		Lick Obs. Bull. 9, 184, 1918
A__1918c	orb -	Aitken, R.G.	1918LicOB...9..191A
A__1918c		Lick Obs. Bull. 9, 191, 1918
A__1918d	orb -	Aitken, R.G.	1918PAAS....3R..68A
A__1918d		PAAS 3, 68, 1918
A__1918e	Ma -	Aitken, R.G.	1918PASP...30...69A
A__1918e		PASP 30, 69, 1918 (all data also in other refs)
A__1918f	Ma -	Aitken, R.G.	1918PASP...30...71A
A__1918f		PASP 30, 71, 1918 (all data also in other refs)
A__1918g	orb -	Aitken, R.G.	1918PASP...30..194A
A__1918g		PASP 30, 194, 1918
A__1918h	Ma -	Aitken, R.G.	1918PASP...30..262A
A__1918h		PASP 30, 262, 1918 (all data also in other refs)
A__1918i	orb -	Aitken, R.G.	1918PASP...30..311A
A__1918i		PASP 30, 311, 1918
A__1919a	Ma -	Aitken, R.G.	1919PASP...31...44A
A__1919a		PASP 31, 44, 1919 (all data also in other refs)
A__1919b	Ma -	Aitken, R.G.	1919PASP...31..116A
A__1919b		PASP 31, 116, 1919 (all data also in other refs)
A__1919c	Ma -	Aitken, R.G.	1919PASP...31..197A
A__1919c		PASP 31, 197, 1919 (all data also in other refs)
A__1919d	orb -	Aitken, R.G.	1919PASP...31..285A
A__1919d		PASP 31, 285, 1919
A__1920a	Ma -	Aitken, R.G.	1920RGOO.....f...1.
A__1920a		Greenwich Observations, F1, 1920
A__1920b	Ma -	Aitken, R.G.	1920PASP...32...56A
A__1920b		PASP 32, 56, 1920 (most data also in other refs)
A__1920c	orb -	Aitken, R.G.	1920PASP...32..215A
A__1920c		PASP 32, 215, 1920
A__1921a	Ma -	Aitken, R.G.	1921PASP...33...60A
A__1921a		PASP 33, 60, 1921 (all data also in other refs)
A__1921b	Ma -	Aitken, R.G.	1921PASP...33..270A
A__1921b		PASP 33, 270, 1921 (all data also in other refs)
A__1922a	-	Aitken, R.G.	1922PASP...34...52A
A__1922a		PASP 34, 52, 1922 (no data)
A__1922b	orb -	Aitken, R.G.	1922PAAS....4....6A
A__1922b		Pub. AAS 4, 6, 1922
A__1923a	Ma j	Aitken, R.G.	1923LicOB..11...58A
A__1923a	+orb	Lick Obs. Bull. 11, 58, 1923
A__1923b	orb -	Aitken, R.G.	1923PASP...35..258A
A__1923b		PASP 35, 258, 1923
A__1923c	orb -	Aitken, R.G.	1923LicOB..11...66A
A__1923c		Lick Obs. Bull. 11, 66, 1923
A__1923d	orb -	Aitken, R.G.	1923LicOB..11...70A
A__1923d		Lick Obs. Bull. 11, 70, 1923
A__1923e	orb -	Aitken, R.G.	1923LicOB..11...79A
A__1923e		Lick Obs. Bull. 11, 79, 1923
A__1923f	orb -	Aitken, R.G.	1923LicOB..11...83A
A__1923f		Lick Obs. Bull. 11, 83, 1923
A__1923g	orb -	Aitken, R.G.	1923LicOB..11...85A
A__1923g		Lick Obs. Bull. 11, 85, 1923
A__1923h	orb -	Aitken, R.G.	1923LicOB..11...97A
A__1923h		Lick Obs. Bull. 11, 97, 1923
A__1923i	orb -	Aitken, R.G.	1923PASP...35...70A
A__1923i		PASP 35, 70, 1923
A__1923j	Ma -	Aitken, R.G.	1923PASP...35..323A
A__1923j		PASP 35, 323, 1923 (all data also in other refs)
A__1924	Ma -	Aitken, R.G.	1924PASP...36..296A
A__1924		PASP 36, 296, 1924 (all data also in other refs)
A__1925a	orb -	Aitken, R.G.	1925PASP...37..222A
A__1925a	+D	PASP 37, 222, 1925
A__1925b	orb -	Aitken, R.G.	1925LicOB..12...45A
A__1925b		Lick Obs. Bull. 12, 45, 1925
A__1925c	orb -	Aitken, R.G.	1925LicOB..12...47A
A__1925c		Lick Obs. Bull. 12, 47, 1925
A__1925D	Ma -	Aitken, R.G.	1925MNRAS..85..276E
A__1925D		cited by Milburn (MNRAS 85, 276, 1925)
A__1926a	Ma -	Aitken, R.G.	1926PASP...38..131A
A__1926a		PASP 38, 131, 1926 (all data also in other refs)
A__1926b	Ma -	Aitken, R.G.	1926PASP...38..334A
A__1926b		PASP 38, 334, 1926 (all data also in other refs)
A__1927a	Ma -	Aitken, R.G.	1927LicOB..12..170A
A__1927a		Lick Obs. Bull. 12, 170, 1927
A__1927b	Ma j	Aitken, R.G.	1927LicOB..12..173A
A__1927b		Lick Obs. Bull. 12, 173, 1927
A__1927c	orb -	Aitken, R.G.	1927PASP...39...45A
A__1927c		PASP 39, 45, 1927
A__1928	Ma -	Aitken, R.G.	1928PASP...40..355A
A__1928		PASP 40, 355, 1928 (all data also in other refs)
A__1929a	Ma -	Aitken, R.G.	1929LicOB..14...62A
A__1929a		Lick Obs. Bull. 14, 62, 1929
A__1929b	Ma -	Aitken, R.G.	1929LicOB..14...88A
A__1929b		Lick Obs. Bull. 14, 88, 1929
A__1930a	Ma -	Aitken, R.G.	1930PASP...42...60A
A__1930a		PASP 42, 60, 1930 (all data also in other refs)
A__1930b	Ma -	Aitken, R.G.	1930PASP...42..123A
A__1930b		PASP 42, 123, 1930 (most data also in other refs)
A__1932a	Ma -	Aitken, R.G.	1932QB821.A43......
A__1932a		Aitken Double Star Catalogue, 1932
A__1932b	Ma -	Aitken, R.G.	1932QB821.A43......
A__1932b		Aitken Double Star Catalogue, 1932 (formerly combined in means)
A__1932c	orb -	Aitken, R.G.	1932PASP...44..127A
A__1932c		PASP 44, 127, 1932
A__1932d	orb -	Aitken, R.G.	1932PASP...44..129A
A__1932d		PASP 44, 129, 1932
A__1932e	Ma -	Aitken, R.G.	1932PASP...44..132A
A__1932e		PASP 44, 132, 1932 (all data also in other refs)
A__1933a	Ma -	Aitken, R.G.	1933PASP...45...90A
A__1933a		PASP 45, 90, 1933
A__1933b	Ma -	Aitken, R.G.	1933PASP...45..261A
A__1933b		PASP 45, 261, 1933
A__1933c	Ma -	Aitken, R.G.	1933LicOB..16...93A
A__1933c		Lick Obs. Bull. 16, 93, 1933
A__1933d	Ma -	Aitken, R.G.	1933LicOB..16...96A
A__1933d		Lick Obs. Bull. 16, 96, 1933
A__1933e	Ma -	Aitken, R.G.	1933PASP...45..190A
A__1933e		PASP 45, 190, 1933 (all data also in other refs)
A__1934a	Ma -	Aitken, R.G.	1934PASP...46..110A
A__1934a		PASP 46, 110, 1934 (all data also in other refs)
A__1934b	-	Aitken, R.G.	1934PASP...46..284A
A__1934b		PASP 46, 284, 1934 (no data)
A__1935e	Ma j	Aitken, R.G.	1935LicOB..17...91A
A__1935e		Lick Obs. Bull. 17, 91, 1935
A__1935f	-	Aitken, R.G.	1935QB821.A3.......
A__1935f		The Binary Stars, 1935
A__1936	orb -	Aitken, R.G.	1936PASP...48..175A
A__1936		PASP 48, 175, 1936
A__1937a	Ma -	Aitken, R.G.	1937LicOB..18...53A
A__1937a		Lick Obs. Bull. 18, 53, 1937
A__1937b	Ma -	Aitken, R.G.	1937LicOB..18..109A
A__1937b		Lick Obs. Bull. 18, 109, 1937
A__9999	Ma -	Aitken, R.G.	...................
A__9999		Unpublished, manuscript or reference not found.
Es_1901	Mb -	Espin, T.E.	1901AN....155..321E
Es_1901		AN 155, 321, 1901 (ES 1 - 39)
Es_1902a	Ma -	Espin, T.E.	1902AN....158..241E
Es_1902a	+Mb	AN 158, 241, 1902 (ES 40 - 112)
Es_1902b	Mb -	Espin, T.E.	1902MNRAS..62..528E
Es_1902b		MNRAS 62, 528, 1902
Es_1902c	Mb j	Espin, T.E.	1902MNRAS..62..402E
Es_1902c		MNRAS 62, 402, 1902
Es_1903	Mb -	Espin, T.E.	1903MNRAS..63..172E
Es_1903		MNRAS 63, 172, 1903 (ES 113 - 150)
Es_1904a	-	Espin, T.E.	1904MNRAS..64..238E
Es_1904a		MNRAS 64, 238, 1904 (data superceded by MNRAS 65, 710, 1905)	1905MNRAS..65..710E
Es_1904b	Mb -	Espin, T.E.	1904MNRAS..64..675E
Es_1904b		MNRAS 64, 675, 1904
Es_1905	Mb -	Espin, T.E.	1905MNRAS..65..710E
Es_1905		MNRAS 65, 710, 1905 (ES 151 - 221)
Es_1906a	Mb -	Espin, T.E.	1906MNRAS..66..141E
Es_1906a		MNRAS 66, 141, 1906 (ES 222 - 269)
Es_1906b	Mb -	Espin, T.E.	1906MNRAS..66..430E
Es_1906b		MNRAS 66, 430, 1906 (ES 270 - 311)
Es_1906C	Mb -	Espin, T.E.	1906QB821.B972.....
Es_1906C		cited in BDS (Burnham Double Star Cat.), 1906
Es_1906D	Mb -	Espin, T.E.	1906MmRAS..56....1L
Es_1906D		cited by Lewis (MemRAS 56, 1, 1906)
Es_1907a	Mb j	Espin, T.E.	1907MNRAS..67..190E
Es_1907a		MNRAS 67, 190, 1907 (ES 312 - 403)
Es_1907b	Mb -	Espin, T.E.	1907MNRAS..67..495E
Es_1907b		MNRAS 67, 495, 1907 (ES 404 - 442)
Es_1908a	Mb j	Espin, T.E.	1908MNRAS..68..202E
Es_1908a		MNRAS 68, 202, 1908 (ES 443 - 551)
Es_1908b	Mb -	Espin, T.E.	1908MNRAS..68..523E
Es_1908b		MNRAS 68, 523, 1908 (ES 552 - 609)
Es_1908c	-	Espin, T.E.	1908JRASC...2..248E
Es_1908c		JRASC 2, 248, 1908 (data also in MNRAS 69, 218, 1909)	1909MNRAS..69..218E
Es_1909a	Mb j	Espin, T.E.	1909MNRAS..69..218E
Es_1909a		MNRAS 69, 218, 1909 (ES 610 - 704)
Es_1909b	Mb j	Espin, T.E.	1909MNRAS..69..604E
Es_1909b		MNRAS 69, 604, 1909 (ES 705 - 743)
Es_1910a	Mb -	Espin, T.E.	1910MNRAS..70..237E
Es_1910a		MNRAS 70, 237, 1910 (ES 744 - 864)
Es_1910b	Mb -	Espin, T.E.	1910MNRAS..70..541E
Es_1910b		MNRAS 70, 541, 1910 (ES 865 - 927)
Es_1911	Mb -	Espin, T.E.	1911MNRAS..71..217E
Es_1911		MNRAS 71, 217, 1911 (ES 928 - 1051)
Es_1912	Mb -	Espin, T.E.	1912MNRAS..72..191E
Es_1912		MNRAS 72, 191, 1912 (ES 1052 - 1125)
Es_1913	Mb j	Espin, T.E.	1913MNRAS..73..162E
Es_1913		MNRAS 73, 162, 1913 (ES 1126 - 1191)
Es_1914	Mb j	Espin, T.E.	1914MNRAS..74..244E
Es_1914		MNRAS 74, 244, 1914 (ES 1192 - 1293)
Es_1915a	Mb -	Espin, T.E.	1915MNRAS..75..203E
Es_1915a		MNRAS 75, 203, 1915 (ES 1294 - 1356)
Es_1915b	Mb -	Espin, T.E.	1915MNRAS..75..555E
Es_1915b		MNRAS 75, 555, 1915 (ES 1357 - 1405)
Es_1915c	Mb -	Espin, T.E.	1915MNRAS..76..210E
Es_1915c		MNRAS 76, 210, 1915 (ES 1406 - 1479)
Es_1917	Mb -	Espin, T.E.	1917MNRAS..77..236E
Es_1917		MNRAS 77, 236, 1917 (ES 1480 - 1600)
Es_1918	Mb j	Espin, T.E.	1918MNRAS..78..189E
Es_1918		MNRAS 78, 189, 1918 (ES 1601 - 1705, MLB 1 - 35)
Es_1919	Mb -	Espin, T.E.	1919MNRAS..79..211E
Es_1919		MNRAS 79, 211, 1919 (ES 1706 - 1768, MLB 36 - 106)
Es_1920	Mb -	Espin, T.E.	1920MNRAS..80..329E
Es_1920		MNRAS 80, 329, 1920 (ES 1769 - 1805, MLB 107 - 149)
Es_1921	Mb j	Espin, T.E.	1921MNRAS..81..232E
Es_1921		MNRAS 81, 232, 1921 (ES 1806 - 1864, MLB 150 - 182)
Es_1922	Mb -	Espin, T.E.	1922MNRAS..82..187E
Es_1922		MNRAS 82, 187, 1922 (ES 1865 - 1933, MLB 183 - 241)
Es_1923	Mb -	Espin, T.E.	1923MNRAS..83..154E
Es_1923		MNRAS 83, 154, 1923 (ES 1934 - 2006, MLB 242 - 275)
Es_1924	Mb -	Espin, T.E.	1924MNRAS..84..162E
Es_1924		MNRAS 84, 162, 1924 (ES 2007 - 2078, MLB 276 - 322)
Es_1925a	Mb -	Espin, T.E.	1925MNRAS..85..276E
Es_1925a		MNRAS 85, 276, 1925 (ES 2079 - 2137, MLB 323 - 376)
Es_1925b	Mb -	Espin, T.E.	1925MNRAS..86...79E
Es_1925b		MNRAS 86, 79, 1925
Es_1926	Mb -	Espin, T.E.	1926MNRAS..86..131E
Es_1926		MNRAS 86, 131, 1926 (ES 2138 - 2209, MLB 377 - 440)
Es_1927	Mb -	Espin, T.E.	1927MNRAS..87..215E
Es_1927		MNRAS 87, 215, 1927 (ES 2210 - 2273, MLB 441 - 510)
Es_1928	Mb -	Espin, T.E.	1928MNRAS..88..185E
Es_1928		MNRAS 88, 185, 1928 (ES 2274 - 2328, MLB 511 - 551)
Es_1929	Mb -	Espin, T.E.	1929MNRAS..89..268E
Es_1929		MNRAS 89, 268, 1929 (ES 2329 - 2362, MLB 552 - 591)
Es_1930	Mb -	Espin, T.E.	1930MNRAS..90..317E
Es_1930		MNRAS 90, 317, 1930 (ES 2363 - 2400, MLB 592 - 630)
Es_1931	Mb -	Espin, T.E.	1931MNRAS..91..294E
Es_1931		MNRAS 91, 294, 1931 (ES 2401 - 2444, MLB 631 - 673)
Es_1932a	Mb -	Espin, T.E.	1932MNRAS..92..214E
Es_1932a		MNRAS 92, 214, 1932 (ES 2445 - 2543, MLB 674 - 732)
Es_1932B	Mb -	Espin, T.E.	1932QB821.A43......
Es_1932B		cited in ADS (Aitken Double Star Cat.), 1932
Es_1933	Mb -	Espin, T.E.	1933MNRAS..93..192E
Es_1933		MNRAS 93, 192, 1933 (ES 2544 - 2575, MLB 733 - 806)
Es_1937A	Mb -	Espin, T.E.	1937AnLei..18....1S
Es_1937A		cited by Strand (Ann. Sterrew. Leiden 18, 1937)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20397+4734	A 747	AB	1994	19	104	0.2	8.70	9.00	A0		203942.24+473426.9
20397+4734	A 747	AB	2008	20	102	0.3	8.70	9.00	A0		203942.24+473426.9
20397+4734	A 747	AB	2009	21	104	0.3	8.70	9.00	A0		203942.24+473426.9

If you need more information about this double, apply for a data request form to the WDS.

WDS 20397+4734 A 747 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20397+4734 A 747 AB : MEASURES

No records found.

WDS 20397+4734 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 20397+4734 : ALADIN DSS IMAGE @ 20^h 39^m 42.24^s +47° 34' 26.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20397+4734 A 747 AB : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		20397+4734	A 747	AB	104	0.3
Show		20397+4734	ES 90	AB,C	141	7.1
Show		20389+4741	A 746		150	2.0	11
Show		20397+4721	A 748		27	1.4	14
Show		20379+4757	HDS2944	Ca,Cb	29	0.4	29
Show		20379+4757	STF2707	AB	29	21.8	30
Show		20379+4757	STF2707	AC	195	55.3	30
Show		20379+4757	ES 2697	AD	192	17.5	30
Show		20379+4757	GUI 33	BC	199	76.6	30
Show		20389+4803	CNT 7		82	3.5	30
Show		20379+4710	TDT2436		82	0.6	31
Show		20414+4758	ES 809	AB	285	1.6	31
Show		20414+4758	SKF2394	AC	68	3.0	31
Show		20383+4804	ES 89	AB	209	21.5	34
Show		20397+4806	ES 806	AB	267	7.0	38
Show		20397+4806	ES 806	AC	24	11.9	38
Show		20361+4745	HJ 1549		55	5.5	39
Show		20437+4733	A 749		306	0.5	41
Show		20434+4712	TDT2496		49	1.7	45
Show		20396+4823	RAO 616		122	1.8	49
Show		20443+4716	TDT2509		180	1.4	51
Show		20409+4828	ES 808		157	3.3	55
Show		20387+4830	HJ 1558		205	4.4	56
Show		20450+4718	BRT2274		41	4.9	57
Show		20437+4651	TDS1096		147	0.9	60
Show		20352+4651	MZA 30	AB	140	22.5	63
Show		20352+4651	MZA 30	AC	115	14.2	63
Show		20352+4651	MZA 30	AD	132	23.8	63
Show		20352+4651	MZA 30	AE	123	17.4	63
Show		20352+4651	MZA 30	AF	106	12.3	63
Show		20353+4650	MZA 37	AB	319	6.1	64
Show		20353+4650	MZA 37	AC	319	11.1	64
Show		20341+4804	YSC 116		270	0.2	64
Show		20336+4719	ES 665		129	5.7	65
Show		20388+4629	BRT2268		320	3.4	66
Show		20334+4752	J 4		1	2.6	66
Show		20349+4651	STTA208	AB	241	83.5	66
Show		20349+4651	BKO 156	AC	98	45.9	66
Show		20431+4637	BRT2273		308	4.7	68
Show		20335+4703	A 738	AB	249	2.4	71
Show		20335+4703	HJ 1541	AC	266	6.3	71
Show		20335+4703	SS 9	AD	198	18.0	71
Show		20335+4703	SS 9	AE	54	20.7	71
Show		20335+4703	SS 9	AF	117	26.0	71
Show		20335+4703	SS 9	AG	176	27.6	71
Show		20335+4703	SS 9	AH	15	29.2	71
Show		20335+4703	HJ 1541	BC	276	4.0	71
Show		20335+4702	BKO 155		310	8.2	71
Show		20454+4816	UC 254		181	17.9	72
Show		20348+4830	ES 666		317	3.0	75
Show		20427+4627	TDS1092		315	0.9	75

WDS 20397+4734 : COMPONENTS

	A	B
B	pa=110.0° sep=0.21"
C	pa=151.6° sep=6.29"	pa=152.9° sep=6.13"

20397+4734 A

Coord arcsec 2000	203942.24+473426.9	Mag	8.7	Spectral class	A0 (white)	PmRA	5.00
PmDE	9.0	SAO	49906	Tycho2	3578-03166-1	HD	197117
DM	BD+47 3159

Tycho2

Tycho2	3578-03166-1	Pflag		RAmdeg	309.92601008	DEmdeg	47.57414575
PmRA	0.6	PmDE	2.3	E RAmdeg	6	E DEmdeg	6
E pmRA	1.6	E pmDE	1.6	EpRAm	1991.34	EpDEm	1991.37
Num	6	Q RAmdeg	0.5	Q DEmdeg	1.0	Q pmRA	0.6
Q pmDE	1.0	BTmag	8.612	E BTmag	0.016	VTmag	8.484
E VTmag	0.013	Prox	387	TYC	T	HIP
CCDM		RAdeg	309.92600778	DEdeg	47.57414083	EpRA 1990	1.62
EpDE 1990	1.63	E RAdeg	5.9	E DEdeg	5.9	Posflg
Corr	0.0

SAO

SAO	49906	DelFlag		RA1950		PmRA1950	0.002
DE1950		PmDE1950	0.016	Vmag	8.2	SpType	A0
Double code		Source	3	CatNum	1618	DM	BD+47 3159
DMcomp		BDsup		HD	197117	M HD	0
GC		RA1950rad	5.4021251	DE1950rad	0.82722172	PmRA2000	0.0024
PmDE2000	0.013

CCDM

Ccdm	20397+4734	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.19	DDEs	27.6
R dRAs	10	Year		Theta		Rho
Obs	3	Vmag	8.7	Sp	A0	PmNote	*
PmRA	-9	PmDE	14	Dm number	+47 3159	Cat1	BD
Name2	+47 1618	Cat2	AGK2/3	HD	197117	M HD
ADS BDS	A14141	M ADS BDS		N IDS		IDS	20364N4713A
HIC

20397+4734 B

Coord arcsec 2000

203942.26+473426.8

Mag

Calc delta mag

0.3

Calc coord

yes

CCDM

Ccdm	20397+4734	RComp		Comp	B	Note1
Note2		Discov num	A 747	DRAs		DDEs
R dRAs		Year	1958	Theta	119	Rho	0.3
Obs	8	Vmag	9.0	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14141	M ADS BDS		N IDS		IDS	20364N4713B
HIC

20397+4734 C

Coord arcsec 2000

203942.54+473421.4

Mag

Calc delta mag

3.3

Calc coord

yes

CCDM

Ccdm	20397+4734	RComp		Comp	C	Note1
Note2		Discov num	ES 90	DRAs		DDEs
R dRAs		Year	1927	Theta	140	Rho	6.8
Obs	5	Vmag	12.0	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14141	M ADS BDS		N IDS		IDS	20364N4713C
HIC