21564+3001 MLB 721 AB

21^h 56^m 21.84^s +30° 01' 53.6" P.A. 15.00 sep 1.6 mag 11.35,9.50

Coord 2000	21564+3001	Discov num	MLB 721	Comp	AB	Coord arcsec 2000	21 56 21.84 +30 01 53.6
Date first	1931	Date last	2016	Obs	7
Pa first	17	Pa last	15.2	P.A. Now (θ)	15.2°
Sep first	1.7	Sep last	1.627	Sep. Now (ρ)	1.627"
Mag pri	11.35	Mag sec	9.50	delta mag (ΔM)	1.85	Spectral class
Pri motion ra	-003	Sec motion ra
Pri motion dec	-010	Sec motion dec
Notes

Nature of this double is uncertain.

21564+3001 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 56 22 +30 01 54	MLB 721 AB	2016	7	15	1.6	11.35	9.50	1.85		<===
Show			21 56 22 +30 01 54	MLB 721 AC	2015	5	200	6.9	11.35	12.00	0.65

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

Tycho2

2719-00306-1

Gaia DR2

1897704430423259136

WDS 21564+3001 MLB 721 AB : 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
21564+3001	MLB 721	AB	2005	5	15	1.5	11.35	9.50		I	215621.84+300153.6
21564+3001	MLB 721	AB	2006	6	15	1.6	11.35	9.50		I	215621.84+300153.6
21564+3001	MLB 721	AB	2016	7	15	1.6	11.35	9.50			215621.84+300153.6

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

WDS 21564+3001 MLB 721 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21564+3001 MLB 721 AB : MEASURES

No records found.

WDS 21564+3001 : 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 21564+3001 : ALADIN DSS IMAGE @ 21^h 56^m 21.84^s +30° 01' 53.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21564+3001 MLB 721 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		21564+3001	MLB 721	AB	15	1.6
Show		21564+3001	MLB 721	AC	200	6.9
Show		21555+2942	HO 609	AB	356	3.3	24
Show		21555+2942	HO 609	AC	132	22.1	24
Show		21555+2942	HO 609	AD	147	30.4	24
Show		21555+2942	HO 609	AE	347	31.7	24
Show		21572+2938	TDT3258		262	1.8	26
Show		21587+2949	BUP 231		76	55.4	33
Show		21575+2923	UC 4612		23	64.1	42
Show		21530+2939	BRT 59		355	4.4	48
Show		21566+3053	HDS3119		33	0.6	51
Show		21565+2900	HJ 1706		260	10.0	62
Show		21575+2856	LEP 104		189	85.0	68
Show		22003+2922	MLB 497		185	7.7	68
Show		21516+3030	MLB 669		309	3.2	68
Show		22001+2909	BRT 60		163	4.0	73
Show		21538+2856	MLB 495		134	4.8	74
Show		21553+2850	COU 836		161	1.3	74
Show		21561+2846	COU 837	AB	150	1.2	76
Show		21561+2846	GII 104	AC	105	1.9	76
Show		21540+2852	GRV 519		318	22.1	76
Show		21511+3046	DEA 89		204	14.8	81
Show		21568+3125	BRT 291		297	1.3	83
Show		21534+3115	TDT3217		327	4.2	83
Show		21510+2911	A 889	AB	15	0.2	87
Show		21510+2911	A 889	Aa,Ab	323	0.0	87
Show		21517+2856	HLD 49		341	2.1	90
Show		21517+2852	SHN 256		-1	0.6	94
Show		21596+3126	LDS4934		255	10.9	94
Show		21556+2823	MLB 577	BC	18	6.4	99
Show		21556+2823	MLB 577	AB	300	48.8	99
Show		21559+3141	ES 2360		226	4.2	100
Show		21494+3045	STF2829		15	17.1	101
Show		21494+3048	GRV 511		228	40.4	101
Show		21539+2821	WSI 8		142	0.1	107
Show		22040+3053	SMA 161		340	5.3	112
Show		21524+2823	NSN 67		285	5.1	113
Show		22052+2952	A 893		229	0.2	115
Show		21564+3156	HJ 1707		351	9.5	115
Show		22045+2915	GRV 539	AB	349	15.1	116
Show		22045+2915	GRV 539	AC	125	67.0	116
Show		22048+3047	A 1227		206	2.5	119
Show		22025+2834	HEI 825		201	2.9	119
Show		21473+2932	STJ 58		193	1.8	122
Show		22012+2818	RAO 691		298	0.3	122
Show		22057+2954	HJ 1721		264	12.8	123
Show		21487+3115	HJ 1695		115	13.3	125
Show		22058+2951	J 1225		115	3.2	125
Show		21544+3204	TDT3227		175	1.3	125
Show		21470+2930	GRV 503		331	20.4	126
Show		21544+3206	COU1042		108	1.4	127

WDS 21564+3001 : COMPONENTS

	A	B
B	pa=13.2° sep=1.61"
C	pa=197.8° sep=6.77"	pa=197.0° sep=8.38"

21564+3001 A

Coord arcsec 2000	215621.84+300153.6		Mag	11.35		PmRA	-3.00		PmDE	-10.0
Tycho2	2719-00306-1

Tycho2

Tycho2	2719-00306-1	Pflag		RAmdeg	329.09096487	DEmdeg	30.03155765
PmRA	-3.1	PmDE	-9.8	E RAmdeg	35	E DEmdeg	42
E pmRA	2.3	E pmDE	2.2	EpRAm	1982.37	EpDEm	1986.16
Num	4	Q RAmdeg	2.0	Q DEmdeg	0.6	Q pmRA	2.0
Q pmDE	0.6	BTmag	12.124	E BTmag	0.115	VTmag	11.349
E VTmag	0.079	Prox	999	TYC	T	HIP
CCDM		RAdeg	329.09101000	DEdeg	30.03158111	EpRA 1990	1.40
EpDE 1990	1.70	E RAdeg	58.2	E DEdeg	47.0	Posflg
Corr	-0.2

21564+3001 B

Coord arcsec 2000

215621.87+300155.2

Mag

9.5

Calc delta mag

1.85

Calc coord

yes

21564+3001 C

Coord arcsec 2000	215621.68+300147.2		Mag	12		PmRA	40.00		PmDE	-33.0
Calc delta mag	0.65		Calc coord	yes