21138-3247 B 2491 (HD 201949)

21^h 13^m 49.83^s -32° 47' 25.1" P.A. 201.00 sep 6.5 mag 10.06,11.10 Sp G

Coord 2000	21138-3247	Discov num	B 2491	Comp		Coord arcsec 2000	21 13 49.83 -32 47 25.1
Date first	1911	Date last	2016	Obs	11
Pa first	204	Pa last	201.4	P.A. Now (θ)	201.4°
Sep first	6.5	Sep last	6.482	Sep. Now (ρ)	6.482"
Mag pri	10.06	Mag sec	11.10	delta mag (ΔM)	1.04	Spectral class	G (yellow)
Pri motion ra	+108	Sec motion ra	+092
Pri motion dec	-041	Sec motion dec	-087
Notes

rPM=0.385

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 201949		Constellation	Microscopium		SAO	212808		Tycho2	7476-00136-1
Gaia DR2	6783910640855607168		HD	201949

WDS 21138-3247 B 2491 (HD 201949) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
B__1921a	orb -	van den Bos, W.H.	1921MNRAS..81..474V
B__1921a		MNRAS 81, 474, 1921
B__1921b	orb -	van den Bos, W.H.	.
B__1921b		Proc. Amsterdam Acad. 30, 72, 1921
B__1923a	Po j	van den Bos, W.H.	1923BAN.....1..193V
B__1923a		BAN 1, 193, 1923
B__1923b	orb -	van den Bos, W.H.	1923BAN.....2...25V
B__1923b		BAN 2, 25, 1923
B__1923c	orb -	van den Bos, W.H.	1923BAN.....2...29V
B__1923c		BAN 2, 29, 1923
B__1925a	Ma j	van den Bos, W.H.	1925AnLei..143...1V
B__1925a		Ann. Leiden Obs. 14, Pt.3, 1925
B__1925b	Ma j	van den Bos, W.H.	1925BAN.....2..197V
B__1925b	+Po	BAN 2, 197, 1925
B__1926a	orb -	van den Bos, W.H.	1926BAN.....3..127V
B__1926a		BAN 3, 127, 1926
B__1926b	orb -	van den Bos, W.H.	1926BAN.....3..128V
B__1926b		BAN 3, 128, 1926
B__1927a	orb -	van den Bos, W.H.	1927BAN.....3..261V
B__1927a		BAN 3, 261, 1927
B__1927b	-	van den Bos, W.H.	1927BAN.....4...45V
B__1927b		BAN 4, 45, 1927
B__1927b		(4th list of new southern double stars; precise measures in later references)
B__1927c	Ma -	van den Bos, W.H.	1927BAN.....4..109V
B__1927c		BAN 4, 109, 1927
B__1927c		(5th list of new southern double stars; precise measures in later references)
B__1927D	Ma -	van den Bos, W.H.	1927sdsc.book......
B__1927D		cited in SDS (Southern Double Star Cat.), 1927
B__1928a	Ma -	van den Bos, W.H.	1928BAN.....4..235V
B__1928a		BAN 4, 235, 1928
B__1928a		(6th list of new southern double stars; precise measures in later references)
B__1928b	Ma j	van den Bos, W.H.	1928AnLei..144...1V
B__1928b		Ann. Leiden Obs. 14, Pt.4, 1928
B__1928c	Ma -	van den Bos, W.H.	1928MNRAS..88..488F
B__1928c		MNRAS 88, 488, 1928
B__1928d	Ma j	van den Bos, W.H.	1928CiUO...78...13V
B__1928d		Union Obs. Johannesburg Circ. 78, 13, 1928
B__1928e	orb -	van den Bos, W.H.	.
B__1928e		Mem. Copenhagen Acad. 12, 2, 1928
B__1929a	Ma j	van den Bos, W.H.	1929CiUO...80...59V
B__1929a		Union Obs. Johannesburg Circ. 80, 59, 1929
B__1929b	orb -	van den Bos, W.H.	1929CiUO...79...49V
B__1929b		Union Obs. Johannesburg Circ. 79, 49, 1929
B__1929c	Ma -	van den Bos, W.H.	1929BAN.....5..125V
B__1929c		BAN 5, 125, 1929
B__1930a	Ma j	van den Bos, W.H.	1930CiUO...83..135V
B__1930a		Union Obs. Johannesburg Circ. 83, 135, 1930
B__1930b	Ma -	van den Bos, W.H.	1930BAN.....5..179V
B__1930b		BAN 5, 179, 1930
B__1930c	Ma -	van den Bos, W.H.	1930BAN.....5..183V
B__1930c		BAN 5, 183, 1930
B__1931a	Ma -	van den Bos, W.H.	1931MNRAS..92...19F
B__1931a		MNRAS 92, 19, 1931
B__1931b	Ma -	van den Bos, W.H.	1931CiUO...85..183V
B__1931b		Union Obs. Johannesburg Circ. 85, 183, 1931
B__1932a	Ma j	van den Bos, W.H.	1932CiUO...87..273V
B__1932a		Union Obs. Johannesburg Circ. 87, 273, 1932
B__1932b	Ma j	van den Bos, W.H.	1932CiUO...88..324V
B__1932b		Union Obs. Johannesburg Circ. 88, 324, 1932
B__1932C	Ma -	van den Bos, W.H.	1932QB821.A43......
B__1932C		cited in ADS (Aitken Double Star Cat.), 1932
B__1933a	Ma -	van den Bos, W.H.	1933BAN.....7....1V
B__1933a		BAN 7, 1, 1933
B__1933b	J -	van den Bos, W.H.	1933CiUO...90..379V
B__1933b		Union Obs. Johannesburg Circ. 90, 379, 1933
B__1933c	orb -	van den Bos, W.H.	1933CiUO...90..388V
B__1933c		Union Obs. Johannesburg Circ. 90, 388, 1933
B__1933d	Ma j	van den Bos, W.H.	1933CiUO...90..401V
B__1933d		Union Obs. Johannesburg Circ. 90, 401, 1933
B__1934a	Ma -	van den Bos, W.H.	1934CiUO...92...61V
B__1934a		Union Obs. Johannesburg Circ. 92, 61, 1934
B__1934b	orb -	van den Bos, W.H.	1934CiUO...92..102V
B__1934b		Union Obs. Johannesburg Circ. 92, 102, 1934
B__1935a	Ma j	van den Bos, W.H.	1935CiUO...94..134V
B__1935a	+J	Union Obs. Johannesburg Circ. 93, 134, 1935
B__1935b	orb -	van den Bos, W.H.	1935CiUO...94..148V
B__1935b		Union Obs. Johannesburg Circ. 94, 148, 1935
B__1935c	Ma j	van den Bos, W.H.	1935CiUO...94..149V
B__1935c		Union Obs. Johannesburg Circ. 94, 149, 1935
B__1935D	orb -	van den Bos, W.H.	1935QB821.A3.......
B__1935D		letter cited by Aitken, The Binary Stars, 1935
B__1936a	orb -	van den Bos, W.H.	1936CiUO...96..231V
B__1936a		Union Obs. Johannesburg Circ. 96, 231, 1936
B__1936b	Ma j	van den Bos, W.H.	1936CiUO...96..234V
B__1936b		Union Obs. Johannesburg Circ. 96, 234, 1936
B__1937a	orb -	van den Bos, W.H.	1937CiUO...98..341V
B__1937a		Union Obs. Johannesburg Circ. 98, 341, 1937
B__1937b	Ma -	van den Bos, W.H.	1937CiUO...98..362V
B__1937b		Union Obs. Johannesburg Circ. 98, 362, 1937
B__1938a	orb -	van den Bos, W.H.	1938CiUO...99..445V
B__1938a		Union Obs. Johannesburg Circ. 99, 445, 1938
B__1938d	orb -	van den Bos, W.H.	1938CiUO..100..480V
B__1938d		Union Obs. Johannesburg Circ. 100, 480, 1938
B__1938e	Ma j	van den Bos, W.H.	1938CiUO..100..481V
B__1938e		Union Obs. Johannesburg Circ. 100, 481, 1938
B__1940	orb -	van den Bos, W.H.	1940CiUO..102...49V
B__1940		Union Obs. Johannesburg Circ. 102, 49, 1940
B__1943A	Ma -	van den Bos, W.H.	1943AJ.....50..139A
B__1943A		cited by Alden (1943 AJ 50, 139)
B__1941	orb -	van den Bos, W.H.	1941CiUO..104...73V
B__1941		Union Obs. Johannesburg Circ. 104, 73, 1941
B__1945	orb -	van den Bos, W.H.	1945AJ.....51..198V
B__1945		AJ 51, 198, 1945
B__1947	Ma -	van den Bos, W.H.	1947CiUO..105..134V
B__1947		Union Obs. Johannesburg Circ. 105, 134, 1947
B__1947b	Po j	van den Bos, W.H. (in Voute et al.)	1947AnBos...6....3V
B__1947b		Ann. Bosscha Obs. Lembang 6, Pt.3, C1, 1947
B__1948	Ma -	van den Bos, W.H.	1948CiUO..107..259V
B__1948		Union Obs. Johannesburg Circ. 107, 259, 1948
B__1949a	orb -	van den Bos, W.H.	1949CiUO..108..310V
B__1949a		Union Obs. Johannesburg Circ. 108, 310, 1949
B__1949b	orb -	van den Bos, W.H.	1949CiUO..108..311V
B__1949b		Union Obs. Johannesburg Circ. 108, 311, 1949
B__1949c	Ma j	van den Bos, W.H.	1949CiUO..108..312V
B__1949c		Union Obs. Johannesburg Circ. 108, 312, 1949
B__1950a	orb -	van den Bos, W.H.	1950CiUO..109..366V
B__1950a		Union Obs. Johannesburg Circ. 109, 366, 1950
B__1950b	orb -	van den Bos, W.H.	1950CiUO..109..370V
B__1950b		Union Obs. Johannesburg Circ. 109, 370, 1950
B__1950c	Ma -	van den Bos, W.H.	1950CiUO..109..371V
B__1950c		Union Obs. Johannesburg Circ. 109, 371, 1950
B__1951a	Ma j	van den Bos, W.H.	1951CiUO..111...13V
B__1951a	+J	Union Obs. Johannesburg Circ. 111, 13, 1951
B__1951b	orb -	van den Bos, W.H.	1951CiUO..111...11V
B__1951b		Union Obs. Johannesburg Circ. 111, 11, 1951
B__1951c	orb -	van den Bos, W.H.	1951CiUO..112..143V
B__1951c		Union Obs. Johannesburg Circ. 112, 143, 1951
B__1951d	-	van den Bos, W.H.	1951JO.....34...85V
B__1951d		J. Obs. 34, 85, 1951
B__1953a	Ma -	van den Bos, W.H.	1953CiUO..113..185V
B__1953a		Union Obs. Johannesburg Circ. 113, 185, 1953
B__1953b	orb -	van den Bos, W.H.	1953CiUO..113..209V
B__1953b		Union Obs. Johannesburg Circ. 113, 209-219, 1953	1953MNSSA..12...19V
B__1953b		(also MNASSA 12, 19, 1953; MNASSA 12, 57, 1953)	1953MNSSA..12...57V
B__1954	orb -	van den Bos, W.H.	1954CiUO..114..235V
B__1954		Union Obs. Johannesburg Circ. 114, 235, 1954
B__1956a	Ma -	van den Bos, W.H.	1956CiUO..115..266V
B__1956a	+J	Union Obs. Johannesburg Circ. 115, 266, 1956
B__1956b	orb -	van den Bos, W.H.	1956CiUO..115..279V
B__1956b		Union Obs. Johannesburg Circ. 115, 279-284, 1956
B__1956c	orb -	van den Bos, W.H.	1956MNSSA..15...39V
B__1956c		MNASSA 15, 39, 1956
B__1957a	orb -	van den Bos, W.H.	1957CiUO..116..289V
B__1957a		Union Obs. Johannesburg Circ. 116, 289-291, 1957
B__1957b	Ma -	van den Bos, W.H.	1957CiUO..116..291V
B__1957b		Union Obs. Johannesburg Circ. 116, 291, 1957
B__1958	Ma -	van den Bos, W.H.	1958AJ.....63...63V
B__1958		AJ 63, 63, 1958
B__1959a	Mb j	van den Bos, W.H.	1959ApJS....4...45V
B__1959a		ApJS 4, 45, 1959
B__1959b	orb -	van den Bos, W.H.	1959JO.....42...79V
B__1959b		J. Obs. 42, 79, 1959
B__1959c	orb -	van den Bos, W.H.	1959JO.....42...93V
B__1959c		J. Obs. 42, 93, 1959
B__1959d	Ma -	van den Bos, W.H.	1959CiUO..118..308V
B__1959d		Union Obs. Johannesburg Circ. 118, 308, 1959
B__1959e	orb -	van den Bos, W.H.	1959CiUO..118..311V
B__1959e		Union Obs. Johannesburg Circ. 118, 311-312, 1959
B__1960a	Ma -	van den Bos, W.H.	1960CiUO..119..321V
B__1960a		Union Obs. Johannesburg Circ. 119, 321, 1960
B__1960b	Ma j	van den Bos, W.H.	1960PYerO...9....1B
B__1960b	+Mb	Pub. Yerkes Obs. 9, pt. 1, 1960
B__1960c	orb -	van den Bos, W.H.	1960JO.....43..145V
B__1960c		J. Obs. 43, 145, 1960
B__1960d	orb -	van den Bos, W.H.	1960JO.....43..152V
B__1960d		J. Obs. 43, 152, 1960
B__1960e	orb -	van den Bos, W.H.	1960CiUO..119..359V
B__1960e		Union Obs. Johannesburg Circ. 119, 339-340, 1960
B__1960f	orb -	van den Bos, W.H.	1960CiUO..119..341V
B__1960f		Union Obs. Johannesburg Circ. 119, 341-343, 1960
B__1961a	Ma -	van den Bos, W.H.	1961CiUO..120..353V
B__1961a		Union Obs. Johannesburg Circ. 120, 353, 1961
B__1961b	orb -	van den Bos, W.H.	1961CiUO..120..374V
B__1961b		Union Obs. Johannesburg Circ. 120, 374-375, 1961
B__1961c	orb -	van den Bos, W.H.	1961CiUO..120..377V
B__1961c		Union Obs. Johannesburg Circ. 120, 377-379, 1961
B__1961d	orb -	van den Bos, W.H.	1961CiUO..120..380V
B__1961d		Union Obs. Johannesburg Circ. 120, 380-381, 1961
B__1961e	orb -	van den Bos, W.H.	1961PASP...74..201V
B__1961e		PASP 74, 201, 1961
B__1962a	Ma -	van den Bos, W.H.	1962AJ.....67..141V
B__1962a		AJ 67, 141, 1962
B__1962b	orb -	van den Bos, W.H.	1962AJ.....67..552V
B__1962b		AJ 67, 552, 1962
B__1962c	orb -	van den Bos, W.H.	1962JO.....45...55V
B__1962c		J. Obs. 45, 55, 1962
B__1962d	Ma j	van den Bos, W.H.	1962AJ.....67..555V
B__1962d		AJ 67, 555, 1962
B__1963a	Ma -	van den Bos, W.H.	1963AJ.....68...57V
B__1963a		AJ 68, 57, 1963
B__1963b	Ma j	van den Bos, W.H.	1963AJ.....68..582V
B__1963b		AJ 68, 582, 1963
B__1964a	orb -	van den Bos, W.H.	1964ROCi..123...62V
B__1964a		Republic Obs. Circ. 123, 62, 1964
B__1964b	orb -	van den Bos, W.H.	1964JO.....47...34V
B__1964b		J. Obs. 47, 34, 1964
B__1965a	Ma -	van den Bos, W.H.	1965ROCi..124...70V
B__1965a		Republic Obs. Circ. 124, 70, 1965
B__1965b	orb -	van den Bos, W.H.	1965ROCi..124...86V
B__1965b		Republic Obs. Circ. 124, 86, 1965
B__1966a	Ma -	van den Bos, W.H.	1966ROCi..125...93V
B__1966a		Republic Obs. Circ. 125, 93, 1966
B__1966b	orb -	van den Bos, W.H.	1966ROCi..125..112V
B__1966b		Republic Obs. Circ. 125, 112, 1966
B__1966c	orb -	van den Bos, W.H.	1966ROCi..125..118V
B__1966c		Republic Obs. Circ. 125, 118, 1966
B__1966d	orb -	van den Bos, W.H.	1966ROCi..125..119V
B__1966d		Republic Obs. Circ. 125, 119-120, 1966
B__1967	Ma -	van den Bos, W.H.	1967ROCi..126..127V
B__1967		Republic Obs. Circ. 126, 127, 1967
B__1967b	orb -	van den Bos, W.H.	1967JO.....13..119V
B__1967b		J. Obs. 13, 119, 1967
B__1968	Ma -	van den Bos, W.H.	1968ROCi..127..157V
B__1968		Republic Obs. Circ. 127, 157, 1968
B__9999	Ma -	van den Bos, W.H.	...................
B__9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21138-3247	B 2491		1998	6	202	6.6	10.06	11.10	G	D	211349.83-324725.1
21138-3247	B 2491		1999	7	201	6.5	10.06	11.10	G	D	211349.83-324725.1
21138-3247	B 2491		2010	8	202	5.7	10.06	11.10	G		211349.83-324725.1
21138-3247	B 2491		2015	9	201	6.5	10.06	11.10	G		211349.83-324725.1
21138-3247	B 2491		2016	11	201	6.5	10.06	11.10	G		211349.83-324725.1

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

WDS 21138-3247 B 2491 (HD 201949) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21138-3247 B 2491 (HD 201949) : MEASURES

No records found.

WDS 21138-3247 (HD 201949) : 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 21138-3247 (HD 201949) : ALADIN DSS IMAGE @ 21^h 13^m 49.83^s -32° 47' 25.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21138-3247 B 2491 (HD 201949) : 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		21138-3247	B 2491		201	6.5
Show		21131-3258	B 1005		124	3.2	14
Show		21095-3311	HDS3014	Ba,Bb	268	0.3	60
Show		21191-3221	SKF2098		27	100.8	71
Show		21168-3352	RST3283		102	0.2	75
Show		21196-3226	I 1605		298	1.7	77
Show		21137-3409	KPP3115		183	7.1	82
Show		21137-3121	BRT3097	AB	124	3.4	87
Show		21157-3414	RST3280		28	1.8	90
Show		21212-3212	NSN 492		320	9.3	100
Show		21132-3429	HDS3021		173	0.3	103
Show		21218-3311	SKF1650		44	2.5	103
Show		21125-3430	UC 4403		263	32.6	104
Show		21103-3424	KPP 629		190	5.8	107
Show		21198-3406	KPP1676		139	12.9	108
Show		21165-3431	BRT1818		185	3.3	109
Show		21150-3059	RSS 557		339	55.4	110
Show		21052-3221	HJ 5242		265	28.9	113
Show		21076-3125	SKF 810		48	25.7	115
Show		21214-3140	UC 4455		283	11.4	118
Show		21145-3045	RSS 556		24	11.8	123
Show		21038-3231	B 1004		16	2.7	128
Show		21238-3219	LDS5922		284	201.1	129
Show		21111-3041	HJ 5248		319	5.3	132
Show		21121-3035	BU 251		232	1.8	134
Show		21027-3254	TDT2711		251	0.5	141
Show		21053-3420	TDT2731		108	2.2	142
Show		21209-3054	HJ 5263		93	27.9	145
Show		21247-3202	JSP 824	AB	198	1.7	146
Show		21256-3227	JSP 825		279	2.0	151
Show		21017-3231	KPP3116		98	2.7	155
Show		21013-3215	RST5475		95	26.8	162
Show		21192-3018	RST2176	AB	246	0.8	165
Show		21192-3018	WIS 348	AC	239	171.8	165
Show		21031-3423	UC 4366		224	16.9	166
Show		21022-3128	LDS 731		179	59.3	167
Show		21007-3315	TDT2691		258	0.5	168
Show		21223-3500	HJ 5264		47	16.3	170
Show		21247-3106	HJ 5266		256	10.7	172
Show		21273-3222	HWE 90		280	1.3	173
Show		21273-3218	B 1007		343	0.1	174
Show		21076-3011	RST2172	AB	310	0.8	176
Show		21076-3011	SKF1252	AB,C	288	17.6	176
Show		20598-3221	UC 4354			39.8	180
Show		21015-3114	NSN 491		314	2.9	183
Show		21283-3254	KPP3117		259	2.3	183
Show		21145-3551	UC 4418		283	8.9	184
Show		21218-3014	UC 4457		240	34.7	185
Show		20591-3301	RST2169		99	1.3	187
Show		21140-2940	MET 91		161	1.9	188
Show		21265-3111	TOK 372		138	0.1	188

WDS 21138-3247 : COMPONENTS

	A
B	pa=198.2° sep=6.35"

21138-3247 A

Componente originario normalizzato	AB	Name	HD 201949	Coord arcsec 2000	211349.83-324725.1	Mag	10.06
Spectral class	G (yellow)	PmRA	108.00	PmDE	-41.0	SAO	212808
Tycho2	7476-00136-1	HD	201949	DM	CD-3315456

Tycho2

Tycho2	7476-00136-1	Pflag		RAmdeg	318.45767620	DEmdeg	-32.79031350
PmRA	102.6	PmDE	-57.8	E RAmdeg	25	E DEmdeg	30
E pmRA	2.3	E pmDE	2.2	EpRAm	1990.32	EpDEm	1989.69
Num	3	Q RAmdeg	0.8	Q DEmdeg	0.5	Q pmRA	0.8
Q pmDE	0.5	BTmag	10.669	E BTmag	0.047	VTmag	10.063
E VTmag	0.039	Prox	351	TYC	T	HIP
CCDM		RAdeg	318.45740000	DEdeg	-32.79018528	EpRA 1990	1.86
EpDE 1990	2.02	E RAdeg	24.5	E DEdeg	30.0	Posflg
Corr	-0.1

SAO

SAO	212808	DelFlag		RA1950		PmRA1950	0.0084
DE1950		PmDE1950	-0.108	Vmag	9.7	SpType	G
Double code		Source	40	CatNum	11584	DM	CD-3315456
DMcomp		BDsup		HD	201949	M HD	0
GC		RA1950rad	5.54482289	DE1950rad	-0.57590511	PmRA2000	0.0084
PmDE2000	-0.111

21138-3247 B

Componente originario normalizzato	AB		Coord arcsec 2000	211349.67-324731.1		Mag	11.1		PmRA	92.00
PmDE	-87.0		Tycho2	7476-00122-1		Calc delta mag	1.04		Calc coord	yes

Tycho2

Tycho2	7476-00122-1	Pflag		RAmdeg	318.45157796	DEmdeg	-32.79844785
PmRA	92.9	PmDE	20.4	E RAmdeg	25	E DEmdeg	29
E pmRA	1.7	E pmDE	1.8	EpRAm	1982.37	EpDEm	1979.96
Num	4	Q RAmdeg	0.0	Q DEmdeg	1.0	Q pmRA	0.1
Q pmDE	0.9	BTmag	11.081	E BTmag	0.062	VTmag	10.288
E VTmag	0.047	Prox	351	TYC	T	HIP
CCDM		RAdeg	318.45132889	DEdeg	-32.79849028	EpRA 1990	1.88
EpDE 1990	2.04	E RAdeg	30.9	E DEdeg	37.9	Posflg
Corr	-0.1