20309+1126 STJ 5 Aa,Ab

20^h 30^m 53.76^s +11° 26' 09.7" P.A. 140.00 sep 0.9 mag 10.00,10.50 Sp F5

Coord 2000	20309+1126	Discov num	STJ 5	Comp	Aa,Ab	Coord arcsec 2000	20 30 53.76 +11 26 09.7
Date first	2015	Date last	2018	Obs	3
Pa first	140	Pa last	140.2	P.A. Now (θ)	140.2°
Sep first	0.9	Sep last	0.881	Sep. Now (ρ)	0.881"
Mag pri	10.00	Mag sec	10.50	delta mag (ΔM)	0.5	Spectral class	F5 (yellow-white)
Pri motion ra	+022	Sec motion ra	+021
Pri motion dec	+018	Sec motion dec	+012
Notes

rPM=0.214 (< 0.3, Physical double)

This double is physical.

20309+1126 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 30 54 +11 26 10	STJ 5 Aa,Ab	2018	3	140	0.9	10.00	10.50	0.50		<===
Show			20 30 54 +11 26 10	LAU 4 AB	2016	14	271	28.1	10.00	11.26	1.26

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

WDS 20309+1126 STJ 5 Aa,Ab : NOTES

discov_num	notes	refcode
LAU 4	BRT1344. Barton derived his measurement from a Toulouse plate observed	Brt1935a
	as part of the Astrographic Catalogue project. However, his secondary
	was apparently either a plate flaw measured as a star, a reduction
	error, or a typographical error in the preparation of the catalogue.
	Thanks to John Nanson (2014, private comm.) for alerting us to this
	missing measurement.

REFERENCES

refcode	metd	author	reference
Brt1935a	Pa -	Barton, S.G.	1935AJ.....44..105B
Brt1935a	+Ma	AJ 44, 105, 1935

DISCOVERER

idgroup	discov	author
1	LAU	Lau, H.E.
38	STJ	Serot, J.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20309+1126	STJ 5	Aa,Ab	2018	2	140	0.9	10.00	10.50	F5		203053.76+112609.7

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

WDS 20309+1126 STJ 5 Aa,Ab : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20309+1126 STJ 5 Aa,Ab : MEASURES

No records found.

WDS 20309+1126 : VIRTUAL EYEPIECE

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

WDS 20309+1126 : ALADIN DSS IMAGE @ 20^h 30^m 53.76^s +11° 26' 09.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20309+1126 STJ 5 Aa,Ab : 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		20309+1126	LAU 4	AB	271	28.1
Show		20309+1126	STJ 5	Aa,Ab	140	0.9
Show		20312+1116	CHR 99	Aa,Ab	142	0.4	12
Show		20312+1116	STF2690	A,BC	255	17.8	12
Show		20312+1116	HJ 269	AD	108	23.0	12
Show		20312+1116	DA 1	BC	184	0.3	12
Show		20317+1124	BPM2182		228	99.8	12
Show		20301+1103	BPM2176		280	53.7	27
Show		20316+1150	J 3		130	2.1	27
Show		20308+1059	BPM2179		29	77.2	28
Show		20298+1154	J 1243		121	3.2	30
Show		20288+1114	UC 4195		275	70.0	33
Show		20310+1200	DAM 673		251	13.3	34
Show		20303+1054	BU 63	AB	347	0.9	34
Show		20303+1054	BU 297	AC	340	16.9	34
Show		20329+1142	J 1	AB	63	2.1	35
Show		20329+1142	UC 4212	AC	256	27.7	35
Show		20313+1201	BRT1345		197	4.9	36
Show		20327+1151	BPM2184		293	59.7	37
Show		20293+1155	BPM2173	AB	21	4.6	38
Show		20293+1155	BPM2173	AC	35	34.0	38
Show		20285+1110	BPM2171		30	40.3	39
Show		20322+1054	LDS4848		143	251.1	42
Show		20324+1202	GRV 351		12	70.6	43
Show		20310+1213	GRV 348		81	14.8	48
Show		20339+1106	TDT2376		76	0.8	49
Show		20345+1138	J 142		242	6.5	54
Show		20348+1121	J 1344		103	2.5	58
Show		20344+1153	LDS4851		328	4.4	58
Show		20321+1220	HJ 1528		237	10.2	58
Show		20270+1116	HJ 268		248	20.5	59
Show		20295+1033	J 3089		317	4.6	60
Show		20349+1120	TDT2394		2	0.5	60
Show		20340+1206	MAD 8		245	20.9	61
Show		20350+1134	BRT3358		288	1.9	61
Show		20294+1029	DAM 214		298	5.3	62
Show		20293+1029	J 3088		79	7.3	63
Show		20266+1148	BPM2161		343	104.2	67
Show		20354+1121	YR 16		278	0.7	67
Show		20326+1024	J 3092		336	5.3	68
Show		20307+1233	BPM2177		220	71.0	68
Show		20263+1109	UC 4181		356	86.7	70
Show		20264+1103	BPM2159	AB	65	36.6	70
Show		20264+1103	BPM2160	AC	152	67.7	70
Show		20339+1032	BPM2189		259	69.9	70
Show		20337+1222	BPM2187		283	103.7	70
Show		20289+1022	J 3263		54	7.1	70
Show		20297+1018	STF2686		278	25.8	71
Show		20292+1019	J 3264		358	5.9	72
Show		20279+1224	TDT2297		237	0.9	73
Show		20345+1036	BPM2192		343	103.0	74

WDS 20309+1126 : COMPONENTS

	A	Ab
Ab	pa=140.8° sep=0.87"
B	pa=271.4° sep=27.55"	pa=272.8° sep=28.13"

20309+1126 A

Coord arcsec 2000	203053.76+112609.7		Mag	10		Spectral class	F5 (yellow-white)		PmRA	22.00
PmDE	18.0

CCDM

Ccdm	20309+1126	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-0.28	DDEs	10.4
R dRAs	10	Year		Theta		Rho
Obs	4	Vmag	9.5	Sp	F5	PmNote	*
PmRA	22	PmDE	22	Dm number	+10 4305	Cat1	BD
Name2	+11 2504	Cat2	AGK2/3	HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20261N1106A
HIC

20309+1126 Ab

Coord arcsec 2000	203053.80+112609.0		Mag	10.5		PmRA	21.00		PmDE	12.0
Calc delta mag	0.5		Calc coord	yes

20309+1126 B

Coord arcsec 2000	203051.89+112610.4		Mag	11.26		PmRA	2.00		PmDE	-1.0
Calc delta mag	1.26		Calc coord	yes

CCDM

Ccdm	20309+1126	RComp		Comp	B	Note1
Note2		Discov num	LAU	DRAs		DDEs
R dRAs		Year	1909	Theta	278	Rho	25.8
Obs	1	Vmag	11.3	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20261N1106B
HIC