20308-5253 B 2486 (HD 194985)

20^h 30^m 49.97^s -52° 52' 33.9" P.A. 188.00 sep 8.3 mag 9.13,11.30 Sp F3IV/V

Coord 2000	20308-5253	Discov num	B 2486	Comp		Coord arcsec 2000	20 30 49.97 -52 52 33.9
Date first	1965	Date last	2016	Obs	7
Pa first	189	Pa last	187.8	P.A. Now (θ)	187.8°
Sep first	8.4	Sep last	8.269	Sep. Now (ρ)	8.269"
Mag pri	9.13	Mag sec	11.30	delta mag (ΔM)	2.17	Spectral class	F3IV/V (yellow-white)
Pri motion ra	+023	Sec motion ra	+023
Pri motion dec	-015	Sec motion dec	-045
Notes

rPM=0.594

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 194985		Constellation	Indus		SAO	246619		Tycho2	8790-01271-1
Gaia DR2	6474064587655163776		HD	194985

WDS 20308-5253 B 2486 (HD 194985) : 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
20308-5253	B 2486		1999	2	188	8.3	9.13	11.30	F3IV/V	D	203049.97-525233.9
20308-5253	B 2486		2010	4	187	7.7	9.13	11.30	F3IV/V		203049.97-525233.9
20308-5253	B 2486		2015	5	188	8.3	9.13	11.30	F3IV/V		203049.97-525233.9
20308-5253	B 2486		2016	7	188	8.3	9.13	11.30	F3IV/V		203049.97-525233.9

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

WDS 20308-5253 B 2486 (HD 194985) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20308-5253 B 2486 (HD 194985) : MEASURES

No records found.

WDS 20308-5253 (HD 194985) : 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 20308-5253 (HD 194985) : ALADIN DSS IMAGE @ 20^h 30^m 49.97^s -52° 52' 33.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20308-5253 B 2486 (HD 194985) : 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		20308-5253	B 2486		188	8.3
Show		20327-5235	RST1072		322	2.8	25
Show		20278-5240	RST1071		255	3.8	31
Show		20333-5352	HU 1532		269	0.6	64
Show		20276-5357	RST5550		350	1.0	71
Show		20382-5223	TDT2440		228	1.8	73
Show		20384-5221	RST1074	AB	226	2.5	75
Show		20394-5216	UC 4245		199	24.1	86
Show		20269-5133	SKF1165		222	20.3	88
Show		20300-5427	UC 4202		57	42.0	95
Show		20270-5111	KPP 584		85	5.4	108
Show		20192-5320	HDS2904		157	26.8	109
Show		20274-5108	RST1070		287	1.2	109
Show		20291-5105	I 664		281	1.5	109
Show		20289-5441	B 484		106	1.6	110
Show		20212-5147	HDS2907		35	0.3	110
Show		20226-5416	HJ 5187		324	20.2	111
Show		20351-5109	HDS2941		268	5.1	112
Show		20267-5107	UC 4186		345	9.2	113
Show		20420-5400	WIS 341		113	999.9	121
Show		20236-5111	I 1417		312	0.8	122
Show		20165-5233	HU 1614		64	1.3	132
Show		20403-5114	HU 1617		279	0.2	132
Show		20164-5236	UC 4132		173	13.8	132
Show		20379-5449	B 495		190	1.7	133
Show		20436-5148	I 128		328	3.6	134
Show		20458-5317	UC 4283		105	7.3	138
Show		20284-5510	TDT2313		28	1.3	139
Show		20167-5355	KPP 466		42	3.3	142
Show		20216-5449	COO 239		346	4.5	142
Show		20192-5433	NSN 452	BC	267	24.7	144
Show		20192-5433	HU 1531		5	1.7	144
Show		20192-5433	NSN 452	AC	271	24.5	144
Show		20232-5047	RST1068		203	0.3	145
Show		20283-5519	SKF 377		333	2.6	149
Show		20135-5222	B 2884		334	8.1	161
Show		20315-5012	B 488		78	1.7	162
Show		20135-5336	RST1063		178	6.0	162
Show		20354-5014	LDS 714	AC	238	100.3	165
Show		20354-5014	WOR9002	AB	273	1.1	165
Show		20492-5242	UC 4300	AB	240	62.2	168
Show		20485-5200	B 1388		327	5.4	171
Show		20455-5105	HU 1618		240	1.0	173
Show		20146-5431	YMG 91		47	0.6	175
Show		20232-5536	SPM 38		317	15.8	177
Show		20500-5220	I 1428		304	6.9	178
Show		20295-5554	KPP4201	AB	196	3.4	182
Show		20363-5549	KPP3077		66	5.4	183
Show		20491-5415	UC 4299		316	20.1	183
Show		20506-5218	HU 1623		229	1.6	184
Show		20484-5431	HDS2964		79	0.9	185

WDS 20308-5253 : COMPONENTS

	A
B	pa=184.7° sep=8.22"

20308-5253 A

Componente originario normalizzato	AB	Name	HD 194985	Coord arcsec 2000	203049.97-525233.9	Mag	9.13
Spectral class	F3IV/V (yellow-white)	PmRA	23.00	PmDE	-15.0	SAO	246619
Tycho2	8790-01271-1	HD	194985	DM	CP-53 9890

Tycho2

Tycho2	8790-01271-1	Pflag		RAmdeg	307.70823156	DEmdeg	-52.87610244
PmRA	20.0	PmDE	-25.7	E RAmdeg	11	E DEmdeg	13
E pmRA	1.4	E pmDE	1.8	EpRAm	1989.83	EpDEm	1990.39
Num	10	Q RAmdeg	0.5	Q DEmdeg	0.8	Q pmRA	0.6
Q pmDE	0.9	BTmag	9.567	E BTmag	0.024	VTmag	9.126
E VTmag	0.020	Prox	999	TYC	T	HIP
CCDM		RAdeg	307.70815500	DEdeg	-52.87604250	EpRA 1990	1.69
EpDE 1990	1.60	E RAdeg	11.3	E DEdeg	13.0	Posflg
Corr	-0.1

SAO

SAO	246619	DelFlag		RA1950		PmRA1950	0.0032
DE1950		PmDE1950	-0.037	Vmag	9	SpType	F2
Double code		Source	42	CatNum	8062	DM	CP-53 9890
DMcomp		BDsup		HD	194985	M HD	0
GC		RA1950rad	5.35420465	DE1950rad	-0.92579882	PmRA2000	0.0029
PmDE2000	-0.041

CCDM

Ccdm	20308-5253	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.02	DDEs	24.9
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.0	Sp	F2	PmNote	*
PmRA	29	PmDE	-37	Dm number	-53 9890	Cat1	CPD
Name2	246619	Cat2	SAO	HD	194985	M HD
ADS BDS		M ADS BDS		N IDS		IDS	20233S5313A
HIC

20308-5253 B

Componente originario normalizzato	AB		Coord arcsec 2000	203049.90-525242.1		Mag	11.3		PmRA	23.00
PmDE	-45.0		Calc delta mag	2.17		Calc coord	yes

CCDM

Ccdm	20308-5253	RComp		Comp	B	Note1
Note2		Discov num	B 2486	DRAs		DDEs
R dRAs		Year		Theta		Rho	6.0
Obs		Vmag		Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20233S5313B
HIC