20030-2314 B 464 (HD 189870)

20^h 03^m 00.97^s -23° 14' 20.3" P.A. 231.00 sep 0.5 mag 10.78,10.93 Sp A9/F0V

Coord 2000	20030-2314	Discov num	B 464	Comp		Coord arcsec 2000	20 03 00.97 -23 14 20.3
Date first	1926	Date last	1991	Obs	4
Pa first	211	Pa last	231.4	P.A. Now (θ)	231.4°
Sep first	0.5	Sep last	0.51	Sep. Now (ρ)	0.51"
Mag pri	10.78	Mag sec	10.93	delta mag (ΔM)	0.15	Spectral class	A9/F0V (white)
Pri motion ra	+019	Sec motion ra	+019
Pri motion dec	-001	Sec motion dec	-001
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 189870		Constellation	Sagittarius		SAO	188850		Tycho2	6892-01655-1
Gaia DR2	6851997206914375296		HD	189870		ADS	13282

WDS 20030-2314 B 464 (HD 189870) : 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
20030-2314	B 464		1991	4	231	0.5	10.78	10.93	A9/F0V		200300.97-231420.3

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

WDS 20030-2314 B 464 (HD 189870) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20030-2314 B 464 (HD 189870) : MEASURES

No records found.

WDS 20030-2314 (HD 189870) : 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 20030-2314 (HD 189870) : ALADIN DSS IMAGE @ 20^h 03^m 00.97^s -23° 14' 20.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20030-2314 B 464 (HD 189870) : 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		20030-2314	B 464		231	0.5
Show		20045-2342	BWL 54	AB	261	2.3	35
Show		20045-2342	BWL 54	AC		6.4	35
Show		20046-2247	TDT1953		253	0.4	36
Show		20032-2229	BRT1558		113	4.1	46
Show		20061-2258	ARA2269		221	11.2	46
Show		20003-2357	SEE 400		25	1.0	57
Show		20073-2324	ARA2270		182	7.8	59
Show		20008-2411	TOK 917	Aa,Ab	244	0.7	65
Show		20077-2324	TDT2004		237	0.4	65
Show		20031-2207	TDT1937		131	1.1	68
Show		20040-2421	RSS 538		107	11.5	69
Show		19587-2237	TDS1029		239	1.3	71
Show		20059-2416	TDT1971		50	0.6	74
Show		20007-2204	KPP1108		355	8.8	78
Show		20088-2242	WHC 18		312	20.8	87
Show		20062-2159	UC 4084		284	44.4	88
Show		19592-2155	LDS 697		315	41.7	96
Show		20059-2455	TDT1972		211	2.9	108
Show		20097-2216	BRT1561		338	2.9	109
Show		20084-2435	B 467		215	0.5	110
Show		20023-2124	LDS4828		105	42.0	111
Show		19549-2325	ARA2268		2	2.6	114
Show		20090-2434	TDT2024		87	0.6	115
Show		19562-2206	BRT1556		35	3.5	117
Show		19550-2352	WHC 17		104	11.9	117
Show		19574-2448	OCC 169		-1	0.8	122
Show		19542-2339	ARA2267		197	12.0	124
Show		20000-2512	KPP3122		355	1.7	125
Show		19578-2132	CRI 25	AB	3	10.3	126
Show		19578-2132	SKF 442	AC	333	3.8	126
Show		20105-2428	UC 4112		236	52.7	127
Show		19543-2356	HJ 2904	AB	34	45.8	128
Show		19543-2356	ALP 33	AC	108	41.6	128
Show		19543-2356	GAA 23	Aa,Ab	14	0.0	128
Show		20071-2509	TDT1993		73	0.5	128
Show		19537-2327	UC 4047		224	54.9	129
Show		19578-2507	TDT1881		29	1.6	133
Show		20103-2147	PRB 8		201	999.9	134
Show		19563-2138	LDS 694		212	10.2	134
Show		20124-2237	RST3250		350	1.1	136
Show		20089-2122	BRT1560		138	4.5	139
Show		19589-2521	LDS4825		329	58.1	140
Show		19528-2309	OCC 189		-1	0.1	141
Show		19541-2430	B 455		265	2.4	144
Show		19575-2108	BRT1557		190	2.8	148
Show		19524-2246	OCC 188		-1	0.5	150
Show		20139-2328	KPP 908		192	7.5	151
Show		20101-2512	OCC 121		-1	0.1	153
Show		20030-2040	DON 975		122	0.9	155
Show		19579-2056	ARA1575		344	10.5	156

WDS 20030-2314 : COMPONENTS

	A
B	pa=229.0° sep=0.49"

20030-2314 A

Componente originario normalizzato	AB	Name	HD 189870	Coord arcsec 2000	200300.97-231420.3	Mag	10.78
Spectral class	A9/F0V (white)	PmRA	19.00	PmDE	-1.0	SAO	188850
Tycho2	6892-01655-1	HD	189870	ADS	13282	DM	CD-2315953

Tycho2

Tycho2	6892-01655-1	Pflag		RAmdeg	300.75398429	DEmdeg	-23.23901352
PmRA	19.4	PmDE	-0.7	E RAmdeg	17	E DEmdeg	21
E pmRA	1.8	E pmDE	1.7	EpRAm	1988.99	EpDEm	1985.54
Num	6	Q RAmdeg	1.0	Q DEmdeg	0.8	Q pmRA	1.0
Q pmDE	0.7	BTmag	10.689	E BTmag	0.035	VTmag	10.184
E VTmag	0.032	Prox	999	TYC	T	HIP
CCDM		RAdeg	300.75393861	DEdeg	-23.23900944	EpRA 1990	1.91
EpDE 1990	1.81	E RAdeg	17.6	E DEdeg	24.6	Posflg	P
Corr	-0.3

SAO

SAO	188850	DelFlag		RA1950		PmRA1950	0.0001
DE1950		PmDE1950	0.033	Vmag	9.3	SpType	F8
Double code		Source	25	CatNum	13950	DM	CD-2315953
DMcomp		BDsup		HD	189870	M HD	0
GC		RA1950rad	5.23615052	DE1950rad	-0.40805256	PmRA2000	0.0001
PmDE2000	0.032

CCDM

Ccdm	20030-2314	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.81	DDEs	-18.4
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.8	Sp	F8	PmNote	*
PmRA	1	PmDE	33	Dm number	-2315953	Cat1	CD
Name2	188850	Cat2	SAO	HD	189870	M HD
ADS BDS	A13282	M ADS BDS		N IDS		IDS	19571S2331A
HIC

20030-2314 B

Componente originario normalizzato	AB		Coord arcsec 2000	200300.94-231420.6		Mag	10.93		PmRA	19.00
PmDE	-1.0		Calc delta mag	0.15		Calc coord	yes

CCDM

Ccdm	20030-2314	RComp		Comp	B	Note1
Note2		Discov num	B 464	DRAs		DDEs
R dRAs		Year	1926	Theta	211	Rho	0.6
Obs	3	Vmag	11.0	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A13282	M ADS BDS		N IDS		IDS	19571S2331B
HIC