20172+2321 POU 4340

20^h 17^m 16.35^s +23° 20' 24.1" P.A. 302.00 sep 7.9 mag 12.49,14.30

Coord 2000	20172+2321	Discov num	POU4340	Comp		Coord arcsec 2000	20 17 16.35 +23 20 24.1
Date first	1898	Date last	2015	Obs	9
Pa first	296	Pa last	302.2	P.A. Now (θ)	302.2°
Sep first	7.5	Sep last	7.911	Sep. Now (ρ)	7.911"
Mag pri	12.49	Mag sec	14.30	delta mag (ΔM)	1.81	Spectral class
Pri motion ra	-002	Sec motion ra
Pri motion dec	-014	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Vulpecula

Tycho2

2155-00930-1

Gaia DR2

1830373980472713600

WDS 20172+2321 POU 4340 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Pou1933	Pa -	Pourteau, M. A.	.
Pou1933		Cat. des etoiles doubles de la zone +24deg de la carte photog. du ciel, 1933
Pou1933		(Obs. de Paris, H. Tessier) [QB821.P7]

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20172+2321	POU4340		1999	2	301	7.9	12.49	14.30		D	201716.35+232024.1
20172+2321	POU4340		2001	3	301	7.9	12.49	14.30		D	201716.35+232024.1
20172+2321	POU4340		2010	4	302	7.6	12.49	14.30			201716.35+232024.1
20172+2321	POU4340		2015	5	302	7.9	12.49	14.30			201716.35+232024.1

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WDS 20172+2321 POU 4340 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20172+2321 POU 4340 : MEASURES

No records found.

WDS 20172+2321 : VIRTUAL EYEPIECE

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WDS 20172+2321 : ALADIN DSS IMAGE @ 20^h 17^m 16.35^s +23° 20' 24.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20172+2321 POU 4340 : 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		20172+2321	POU4340		302	7.9
Show		20171+2323	TDT2140		285	0.7	4
Show		20177+2328	POU4345		106	13.2	11
Show		20182+2321	BKO 637		67	6.1	13
Show		20165+2328	POU4326		301	14.2	13
Show		20182+2319	POU4348	AB	164	28.8	14
Show		20182+2319	SKF 291	AC	24	5.1	14
Show		20166+2331	POU4331		148	3.6	15
Show		20184+2324	POU4353			4.8	17
Show		20164+2309	COU 218		219	0.3	17
Show		20170+2340	POU4336		206	15.6	20
Show		20188+2319	POU4356		46	5.0	22
Show		20188+2322	TDT2159		62	0.9	22
Show		20182+2342	POU4346		293	16.7	25
Show		20154+2325	POU4314		115	16.5	27
Show		20189+2339	POU4359		354	12.9	29
Show		20194+2323	POU4365		104	18.7	30
Show		20155+2338	POU4316		186	18.0	31
Show		20191+2338	BKO 639		323	9.9	31
Show		20196+2317	POU4370		7	11.5	33
Show		20149+2312	POU4308		51	4.1	34
Show		20191+2341	POU4360		255	8.9	34
Show		20196+2325	POU4371		318	11.1	34
Show		20167+2354	POU4332		308	10.4	35
Show		20147+2327	POU4306		205	12.7	36
Show		20195+2337	POU4367		210	11.3	36
Show		20169+2356	POU4334		223	19.6	36
Show		20148+2335	POU4307		233	11.7	37
Show		20189+2351	POU4358		150	18.2	38
Show		20199+2332	POU4374		111	5.0	39
Show		20147+2355	BKO 815		339	2.5	39
Show		20146+2334	POU4305		318	6.9	40
Show		20170+2401	POU4337		124	9.7	40
Show		20143+2328	POU4296		81	15.5	42
Show		20201+2334	BKO 641		98	8.0	42
Show		20203+2331	BKO 644		280	5.6	43
Show		20198+2257	KPP4191		356	1.9	43
Show		20203+2321	POU4380		277	12.9	43
Show		20205+2326	POU4382		284	12.7	46
Show		20205+2329	POU4385		52	5.8	47
Show		20142+2340	POU4294		155	13.1	47
Show		20205+2334	POU4381		160	18.5	47
Show		20143+2343	POU4297		296	13.7	47
Show		20140+2335	POU4292		349	12.2	48
Show		20157+2238	KPP2658		3	24.8	49
Show		20138+2325	BKO 808		80	6.4	49
Show		20169+2410	POU4335		93	11.7	49
Show		20138+2334	BKO 807	AB	170	9.9	50
Show		20138+2334	BKO 807	AC	14	10.2	50
Show		20159+2406	TDT2128		324	2.0	50
Show		20205+2342	POU4384		12	11.4	50

WDS 20172+2321 : COMPONENTS

	A
B	pa=304.4° sep=7.45"

20172+2321 A

Componente originario normalizzato	AB		Coord arcsec 2000	201716.35+232024.1		Mag	12.49		PmRA	-2.00
PmDE	-14.0		Tycho2	2155-00930-1

Tycho2

Tycho2	2155-00930-1	Pflag		RAmdeg	304.31813291	DEmdeg	23.34004036
PmRA	-1.1	PmDE	-17.5	E RAmdeg	95	E DEmdeg	95
E pmRA	2.0	E pmDE	2.0	EpRAm	1957.49	EpDEm	1957.93
Num	3	Q RAmdeg	0.9	Q DEmdeg	1.4	Q pmRA	0.9
Q pmDE	1.4	BTmag	13.401	E BTmag	0.325	VTmag	12.495
E VTmag	0.219	Prox	999	TYC		HIP
CCDM		RAdeg	304.31813583	DEdeg	23.34008222	EpRA 1990	1.39
EpDE 1990	1.46	E RAdeg	117.0	E DEdeg	117.3	Posflg
Corr	0.0

20172+2321 B

Componente originario normalizzato	AB		Coord arcsec 2000	201715.90+232028.3		Mag	14.3		Calc delta mag	1.81
Calc coord	yes