19507-4454 DON 970

19^h 50^m 39.32^s -44° 53' 39.4" P.A. 199.00 sep 2.3 mag 10.36,13.40 Sp A9V

Coord 2000	19507-4454	Discov num	DON 970	Comp		Coord arcsec 2000	19 50 39.32 -44 53 39.4
Date first	1929	Date last	2016	Obs	3
Pa first	201	Pa last	199.3	P.A. Now (θ)	199.3°
Sep first	1.8	Sep last	2.297	Sep. Now (ρ)	2.297"
Mag pri	10.36	Mag sec	13.40	delta mag (ΔM)	3.04	Spectral class	A9V (white)
Pri motion ra	+011	Sec motion ra
Pri motion dec	-023	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Sagittarius

Tycho2

7946-00924-1

Gaia DR2

6684272789769389952

187187

WDS 19507-4454 DON 970 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Don1937	Ma j	Donner, H.F.	1937MmRAS..65...51R
Don1937		MemRAS 65, 51, 1937
Don1955	Ma -	Donner, H.F.	1955POMic..11....1R
Don1955		Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964	Ma j	Donner, H.F.	1964POMic...9...73R
Don1964		Pub. Univ. Michigan Obs. 9, 73, 1964

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19507-4454	DON 970		1929	1	201	1.8	10.36	13.40	A9V		195039.32-445339.4
19507-4454	DON 970		2015	2	199	2.3	10.36	13.40	A9V		195039.32-445339.4
19507-4454	DON 970		2016	3	199	2.3	10.36	13.40	A9V		195039.32-445339.4

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

WDS 19507-4454 DON 970 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19507-4454 DON 970 : MEASURES

No records found.

WDS 19507-4454 : VIRTUAL EYEPIECE

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WDS 19507-4454 : ALADIN DSS IMAGE @ 19^h 50^m 39.32^s -44° 53' 39.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 19507-4454 DON 970 : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		19507-4454	DON 970		199	2.3	1
Show		19484-4459	HDS2817		270	10.2	25
Show		19502-4523	HJ 5148		318	13.9	30
Show		19537-4531	BRT1102		218	5.0	50
Show		19495-4545	UC 4030		295	40.3	53
Show		19502-4552	RST1048		12	0.8	59
Show		19567-4537	TDT1867		229	0.6	78
Show		19479-4338	I 657		321	1.3	82
Show		19438-4418	HJ 5138		41	19.0	82
Show		19430-4503	SKF1092		301	6.0	83
Show		19447-4359	NSN 482		65	2.0	84
Show		19554-4344	DON 972		84	0.2	87
Show		19516-4323	SKF1158		261	17.8	92
Show		19422-4525	KPP 843		17	7.2	95
Show		19429-4406	BRG 28		350	0.8	96
Show		19478-4629	HJ 5143		315	5.4	100
Show		19546-4322	UC 4051		174	23.1	101
Show		19417-4545	BRT1099		350	3.3	108
Show		19520-4642	TDT1811		103	2.0	110
Show		19403-4440	TSN 67		151	20.1	112
Show		19420-4350	DON 964		60	1.1	113
Show		19438-4326	HJ 5139		126	13.5	115
Show		20014-4422	HJ 5161		314	11.3	119
Show		20009-4402	UC 4063		255	30.3	122
Show		19590-4622	HJ 5157		280	17.5	125
Show		19592-4324	SKF1161		308	16.4	129
Show		20010-4614	HJ 5160		164	26.7	135
Show		19484-4241	RSS 533		319	12.5	136
Show		20022-4556	HDS2854		327	0.1	137
Show		20023-4554	I 660		277	1.8	138
Show		19452-4240	HDS2805		340	0.4	146
Show		19369-4451	UC 3987		49	10.5	146
Show		20008-4634	RST1054		2	0.3	147
Show		20045-4457	HDS2862		3	0.4	148
Show		20039-4543	DAM 629		238	10.5	148
Show		19405-4641	HU 1530		207	0.6	152
Show		20041-4547	CPO 87		5	28.0	152
Show		20052-4440	KPP 864		188	7.3	156
Show		19358-4509	B 977		49	0.6	159
Show		19468-4217	UC 4023		179	46.9	163
Show		20018-4647	UC 4067		339	13.5	163
Show		19388-4302	HU 1330		309	1.4	170
Show		19529-4744	TDT1823		80	0.7	172
Show		20058-4353	TDT1970		276	0.5	174
Show		19475-4200	TDT1755		103	2.7	178
Show		19374-4646	HJ 5129		93	11.2	178
Show		20071-4533	UC 4089		300	14.1	179
Show		19338-4437	UC 3978		134	43.4	180
Show		20033-4255	I 1490		152	0.9	181
Show		19358-4327	DON 963		178	0.4	182
Show		19507-4152	I 122		336	5.3	183

WDS 19507-4454 : COMPONENTS

	A
B	pa=193.9° sep=2.23"

19507-4454 A

Componente originario normalizzato	AB		Coord arcsec 2000	195039.32-445339.4		Mag	10.36		Spectral class	A9V (white)
PmRA	11.00		PmDE	-23.0		Tycho2	7946-00924-1		HD	187187

Tycho2

Tycho2	7946-00924-1	Pflag		RAmdeg	297.66384262	DEmdeg	-44.89429592
PmRA	19.8	PmDE	-15.4	E RAmdeg	21	E DEmdeg	29
E pmRA	1.4	E pmDE	1.6	EpRAm	1983.64	EpDEm	1982.55
Num	5	Q RAmdeg	1.8	Q DEmdeg	1.1	Q pmRA	1.7
Q pmDE	1.1	BTmag	10.643	E BTmag	0.046	VTmag	10.358
E VTmag	0.049	Prox	999	TYC	T	HIP
CCDM		RAdeg	297.66378444	DEdeg	-44.89425528	EpRA 1990	1.85
EpDE 1990	1.70	E RAdeg	24.5	E DEdeg	35.1	Posflg
Corr	0.1

19507-4454 B

Componente originario normalizzato	AB		Coord arcsec 2000	195039.27-445341.6		Mag	13.4		Calc delta mag	3.04
Calc coord	yes