21309+7342 MLB 425

21^h 30^m 47.44^s +73° 40' 52.8" P.A. 338.00 sep 2.0 mag 11.11,11.40

Coord 2000	21309+7342	Discov num	MLB 425	Comp		Coord arcsec 2000	21 30 47.44 +73 40 52.8
Date first	1925	Date last	2020	Obs	7
Pa first	334	Pa last	337.7	P.A. Now (θ)	337.7°
Sep first	2.1	Sep last	2.04	Sep. Now (ρ)	2.04"
Mag pri	11.11	Mag sec	11.40	delta mag (ΔM)	0.29	Spectral class
Pri motion ra	+003	Sec motion ra
Pri motion dec	-007	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cepheus

Tycho2

4473-00982-1

Gaia DR2

2273892614357233152

WDS 21309+7342 MLB 425 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Mlb1918	Mb -	Milburn, W. (Espin, T.E.)	1918MNRAS..78..189E
Mlb1918		MNRAS 78, 189, 1918 (MLB 1 - 35; measures by Espin)
Mlb1919	Mb -	Milburn, W. (Espin, T.E.)	1919MNRAS..79..211E
Mlb1919		MNRAS 79, 211, 1919 (MLB 36 - 106; measures by Espin)
Mlb1920	Mb -	Milburn, W.	1920MNRAS..80..329M
Mlb1920		MNRAS 80, 329, 1920 (MLB 107 - 149)
Mlb1921	Mb -	Milburn, W.	1921MNRAS..81..232E
Mlb1921		MNRAS 81, 232, 1921 (MLB 150 - 182)
Mlb1922	Mb j	Milburn, W. (Espin, T.E.)	1922MNRAS..82..187E
Mlb1922		MNRAS 82, 187, 1922 (MLB 183 - 241; measures by Espin)
Mlb1923	Mb -	Milburn, W.	1923MNRAS..83..154E
Mlb1923		MNRAS 83, 154, 1923 (MLB 242 - 275)
Mlb1924	Mb -	Milburn, W.	1924MNRAS..84..162E
Mlb1924		MNRAS 84, 162, 1924 (MLB 276 - 322)
Mlb1925	Mb j	Milburn, W.	1925MNRAS..85..276E
Mlb1925		MNRAS 85, 276, 1925 (MLB 323 - 376)
Mlb1926	Mb -	Milburn, W.	1926MNRAS..86..131E
Mlb1926		MNRAS 86, 131, 1926 (MLB 377 - 440)
Mlb1927	Mb j	Milburn, W.	1927MNRAS..87..215E
Mlb1927	+Po	MNRAS 87, 215, 1927 (MLB 441 - 510)
Mlb1928	Mb -	Milburn, W.	1928MNRAS..88..185E
Mlb1928		MNRAS 88, 185, 1928 (MLB 511 - 551)
Mlb1929	Mb -	Milburn, W.	1929MNRAS..89..268E
Mlb1929		MNRAS 89, 268, 1929 (MLB 552 - 591)
Mlb1930	Mb -	Milburn, W.	1930MNRAS..90..317E
Mlb1930		MNRAS 90, 317, 1930 (MLB 592 - 630)
Mlb1931	Mb j	Milburn, W.	1931MNRAS..91..294E
Mlb1931		MNRAS 91, 294, 1931 (MLB 631 - 673)
Mlb1932	Ma -	Milburn, W.	1932MNRAS..92..214E
Mlb1932	+Mb	MNRAS 92, 214, 1932 (MLB 674 - 732)
Mlb1932B	Ma -	Milburn, W.	1932QB821.A43......
Mlb1932B		cited by ADS (Aitken Double Star Cat., 1932)
Mlb1933	Ma j	Milburn, W.	1933MNRAS..93..192E
Mlb1933	+Mb	MNRAS 93, 192, 1933 (MLB 733 - 806)
Mlb1934	Mb j	Milburn, W.	1934MNRAS..94..255M
Mlb1934		MNRAS 94, 255, 1934 (MLB 807 - 912)
Mlb1935	Mb j	Milburn, W.	1935MNRAS..95..298M
Mlb1935		MNRAS 95, 298, 1935 (MLB 913 - 969)
Mlb1936	Mb -	Milburn, W.	1936MNRAS..96..266M
Mlb1936		MNRAS 96, 266, 1936 (MLB 970 - 997)
Mlb1937	Ma -	Milburn, W.	1937MNRAS..97..222M
Mlb1937	+Mb	MNRAS 97, 222, 1937 (MLB 998 - 1025)
Mlb1938	Ma -	Milburn, W.	1938MNRAS..98..223M
Mlb1938	+Mb	MNRAS 98, 223, 1938 (MLB 1026 - 1032)
Mlb1939	Mb -	Milburn, W.	1939MNRAS..99..278M
Mlb1939		MNRAS 99, 278, 1939 (MLB 1033 - 1051)
Mlb9999	Mb -	Milburn, W.	...................
Mlb9999		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
21309+7342	MLB 425		1998	4	337	2.1	11.11	11.40			213047.44+734052.8
21309+7342	MLB 425		2015	5	338	2.1	11.11	11.40			213047.44+734052.8
21309+7342	MLB 425		2016	6	338	2.1	11.11	11.40			213047.44+734052.8
21309+7342	MLB 425		2020	7	338	2.0	11.11	11.40			213047.44+734052.8

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

WDS 21309+7342 MLB 425 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21309+7342 MLB 425 : MEASURES

No records found.

WDS 21309+7342 : VIRTUAL EYEPIECE

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

WDS 21309+7342 : ALADIN DSS IMAGE @ 21^h 30^m 47.44^s +73° 40' 52.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21309+7342 MLB 425 : 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		21309+7342	MLB 425		338	2.0
Show		21291+7330	SHN 251		-1	0.5	14
Show		21342+7344	OSW 62		27	119.4	15
Show		21270+7339	ZUC 15		167	1.9	17
Show		21344+7300	OSW 61		183	87.2	44
Show		21320+7256	LDS1955		67	3.1	46
Show		21409+7406	UC 4524		143	46.4	49
Show		21391+7421	KPP4240		238	6.8	53
Show		21276+7247	LDS1954		4	6.0	56
Show		21220+7257	TDT2926		74	0.6	58
Show		21398+7425	MLR 250		315	0.7	59
Show		21363+7247	HJ 3051		183	13.5	60
Show		21461+7411	SKF1102		184	2.3	71
Show		21257+7233	HJ 3035	AB	127	23.2	72
Show		21257+7233	HJ 3035	AC	202	24.2	72
Show		21138+7409	CBL 91		168	32.7	76
Show		21493+7410	UC 4573		264	51.6	83
Show		21113+7334	CRB 209		143	22.0	83
Show		21482+7303	MLB 426		116	2.4	84
Show		21112+7404	STF2784		345	14.3	85
Show		21503+7410	UC 4578	BC	48	71.7	86
Show		21321+7507	OSW 63		233	87.1	87
Show		21503+7410	UC 4578	AB	187	73.6	87
Show		21503+7410	UC 4578	AC	120	51.1	87
Show		21267+7211	TDT2971		116	1.9	92
Show		21343+7210	TDT3036		161	1.2	93
Show		21431+7225	NSN 747		59	1.0	93
Show		21374+7513	STT 449		127	1.2	97
Show		21233+7207	LSC 98		222	0.1	100
Show		21460+7515	UC 4555		332	16.7	113
Show		21326+7134	HJ 3044		75	7.6	128
Show		21248+7551	NSN 744		354	0.9	133
Show		21277+7119	LDS1953		116	11.5	143
Show		21502+7146	A 1225		193	1.1	144
Show		21362+7115	MLR 249		263	1.3	148
Show		21114+7140	OSO 143		277	16.6	149
Show		21201+7112	HJ 3027		128	34.2	159
Show		21331+7059	MLB 367		108	3.6	162
Show		21121+7619	STT 436		227	12.0	174
Show		21248+7636	LDS1952		76	190.2	177
Show		21319+7034	H 5 28	AB	342	79.2	186
Show		21319+7034	H 5 28	AC	169	132.9	186
Show		21275+7028	SHR 1		141	11.5	188
Show	Alfirk	21287+7034	LAB 6	Aa,Ab	226	0.2	188
Show	Alfirk	21287+7034	STF2806	AB	250	13.6	188
Show		21168+7642	LDS1947		319	165.7	189
Show		21115+7050	HDS3019	AB	136	0.3	193
Show		21274+7028	CSR 1		286	7.7	194
Show		21322+7025	KPP2361		247	20.3	197
Show		21159+7649	LOC 472		108	3.2	197
Show		21140+7646	LDS1946		35	15.1	197

WDS 21309+7342 : COMPONENTS

	A
B	pa=353.4° sep=1.90"

21309+7342 A

Componente originario normalizzato	AB		Coord arcsec 2000	213047.44+734052.8		Mag	11.11		PmRA	3.00
PmDE	-7.0		Tycho2	4473-00982-1

Tycho2

Tycho2	4473-00982-1	Pflag		RAmdeg	322.69765797	DEmdeg	73.68135021
PmRA	3.0	PmDE	-7.0	E RAmdeg	42	E DEmdeg	44
E pmRA	1.9	E pmDE	2.1	EpRAm	1986.23	EpDEm	1986.74
Num	3	Q RAmdeg	0.6	Q DEmdeg	0.1	Q pmRA	0.6
Q pmDE	0.1	BTmag	11.693	E BTmag	0.071	VTmag	11.112
E VTmag	0.068	Prox	999	TYC	T	HIP
CCDM		RAdeg	322.69763333	DEdeg	73.68136639	EpRA 1990	1.69
EpDE 1990	1.76	E RAdeg	42.9	E DEdeg	44.7	Posflg
Corr	0.0

21309+7342 B

Componente originario normalizzato	AB		Coord arcsec 2000	213047.39+734054.7		Mag	11.4		Calc delta mag	0.29
Calc coord	yes