21556+2823 MLB 577 BC

21^h 55^m 34.30^s +28° 23' 54.1" P.A. 18.00 sep 6.4 mag 11.10,12.60

Coord 2000	21556+2823	Discov num	MLB 577	Comp	BC	Coord arcsec 2000	21 55 34.30 +28 23 54.1
Date first	1928	Date last	2015	Obs	8
Pa first	25	Pa last	18.1	P.A. Now (θ)	18.1°
Sep first	5.7	Sep last	6.371	Sep. Now (ρ)	6.371"
Mag pri	11.10	Mag sec	12.60	delta mag (ΔM)	1.5	Spectral class
Pri motion ra	-006	Sec motion ra
Pri motion dec	-007	Sec motion dec
Notes

Nature of this double is uncertain.

21556+2823 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 55 37 +28 23 30	MLB 577 AB	2014	9	300	48.8	10.57	12.41	1.84
Show			21 55 34 +28 23 54	MLB 577 BC	2015	8	18	6.4	11.10	12.60	1.50		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

Gaia DR2

1896146873419840256

WDS 21556+2823 MLB 577 BC : 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
21556+2823	MLB 577	BC	1997	2	22	6.0	11.00	12.50		D	215534.30+282354.1
21556+2823	MLB 577	BC	2010	3	20	7.0	11.00	12.50		D	215534.30+282354.1
21556+2823	MLB 577	BC	2015	5	18	6.4	11.10	12.60			215534.30+282354.1

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

WDS 21556+2823 MLB 577 BC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21556+2823 MLB 577 BC : MEASURES

No records found.

WDS 21556+2823 : 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 21556+2823 : ALADIN DSS IMAGE @ 21^h 55^m 34.30^s +28° 23' 54.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21556+2823 MLB 577 BC : 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		21556+2823	MLB 577	BC	18	6.4	1
Show		21556+2823	MLB 577	AB	300	48.8	1
Show		21539+2821	WSI 8		142	0.1	23
Show		21561+2846	COU 837	AB	150	1.2	24
Show		21561+2846	GII 104	AC	105	1.9	24
Show		21553+2850	COU 836		161	1.3	26
Show		21559+2753	HJ 1704		317	5.6	31
Show		21540+2852	GRV 519		318	22.1	35
Show		21565+2900	HJ 1706		260	10.0	39
Show		21575+2856	LEP 104		189	85.0	42
Show		21524+2823	NSN 67		285	5.1	43
Show		21538+2856	MLB 495		134	4.8	43
Show		21580+2755	KPP3375		114	14.2	44
Show		21573+2738	NSN 749		84	1.7	52
Show		21593+2800	MLB 578		151	3.1	55
Show		21521+2748	HO 171		342	0.8	58
Show		21517+2852	SHN 256		-1	0.6	59
Show		21517+2856	HLD 49		341	2.1	60
Show		21555+2724	A 303	AB	52	2.3	61
Show		21555+2724	STJ 1	AC	337	3.4	61
Show		21567+2721	GRV 521		306	45.5	64
Show		21575+2923	UC 4612		23	64.1	65
Show		21585+2725	A 304	AB	131	0.6	71
Show		21585+2725	A 304	AB,C	240	13.9	71
Show		21505+2756	AZC 116		353	20.9	74
Show		22001+2909	BRT 60		163	4.0	75
Show		22012+2818	RAO 691		298	0.3	75
Show		21510+2911	A 889	AB	15	0.2	76
Show		21510+2911	A 889	Aa,Ab	323	0.0	76
Show		21503+2754	MLB 576		267	13.1	76
Show		21572+2938	TDT3258		262	1.8	78
Show		21555+2942	HO 609	AB	356	3.3	80
Show		21555+2942	HO 609	AC	132	22.1	80
Show		21555+2942	HO 609	AD	147	30.4	80
Show		21555+2942	HO 609	AE	347	31.7	80
Show		21530+2939	BRT 59		355	4.4	83
Show		21561+2701	J 854		305	2.8	83
Show		22013+2751	ES 527		214	3.5	83
Show		22003+2922	MLB 497		185	7.7	85
Show		21536+2701	ES 523		95	6.2	86
Show		22025+2834	HEI 825		201	2.9	92
Show		21587+2949	BUP 231		76	55.4	95
Show		21553+2648	A 302		239	5.8	97
Show		21564+3001	MLB 721	AB	15	1.6	99
Show		21564+3001	MLB 721	AC	200	6.9	99
Show		21480+2819	MLB 541		340	9.9	100
Show		21547+2643	CVR 924		252	21.1	102
Show		21474+2834	A 300	AB	252	2.3	108
Show		21474+2834	A 300	AC	29	7.5	108
Show		21474+2834	A 300	AD	170	8.4	108
Show		22032+2729	COU 434		92	1.0	110

WDS 21556+2823 : COMPONENTS

	A	B
B	pa=300.3° sep=48.59"
C	pa=307.2° sep=50.51"	pa=16.0° sep=6.30"

21556+2823 A

Coord arcsec 2000	215537.48+282329.6		Mag	10.57		Spectral class	F0 (yellow-white)		PmRA	3.00
PmDE	-13.0		Tycho2	2215-00112-1

Tycho2

Tycho2	2215-00112-1	Pflag		RAmdeg	328.90619971	DEmdeg	28.39156817
PmRA	3.7	PmDE	-13.7	E RAmdeg	29	E DEmdeg	30
E pmRA	1.9	E pmDE	1.8	EpRAm	1983.46	EpDEm	1982.84
Num	6	Q RAmdeg	0.3	Q DEmdeg	0.8	Q pmRA	0.3
Q pmDE	0.9	BTmag	10.930	E BTmag	0.064	VTmag	10.573
E VTmag	0.062	Prox	999	TYC	T	HIP
CCDM		RAdeg	328.90618750	DEdeg	28.39159944	EpRA 1990	1.51
EpDE 1990	1.61	E RAdeg	40.1	E DEdeg	41.5	Posflg
Corr	-0.1

21556+2823 B

Coord arcsec 2000	215534.30+282354.1		Coord calc	215534.30+282354.1		Mag	11.1		PmRA	-6.00
PmDE	-7.0		Calc delta mag	0.53

21556+2823 C

Coord arcsec 2000

215534.43+282400.2

Mag

12.6

Calc delta mag

2.03

Calc coord

yes