21453+2501 BKO 491 BC

21^h 45^m 18.86^s +25° 00' 08.3" P.A. 263.00 sep 3.1 mag 14.50,14.58 Sp MS MS

Coord 2000	21453+2501	Discov num	BKO 491	Comp	BC	Coord arcsec 2000	21 45 18.86 +25 00 08.3
Date first	2016	Date last	2016	Obs	1
Pa first	263	Pa last	263.1	P.A. Now (θ)	263.1°
Sep first	3.1	Sep last	3.055	Sep. Now (ρ)	3.055"
Mag pri	14.50	Mag sec	14.58	delta mag (ΔM)	0.08	Spectral class	MS MS (red/red)
Pri motion ra	+015	Sec motion ra	+015
Pri motion dec	-017	Sec motion dec	-018
Notes	V (Proper motion indicates physical)

rPM=0.043 (< 0.3, Physical double)

This double is physical.

21453+2501 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 45 18 +25 00 12	POU 5486 AB	2015	5	116	8.2	13.60	13.80	0.20
Show			21 45 18 +25 00 12	BKO 491 AC	2015	3	132	5.9	13.60	14.00	0.40
Show			21 45 19 +25 00 08	BKO 491 BC	2016	1	263	3.1	14.50	14.58	0.08		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

WDS 21453+2501 BKO 491 BC : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bko2002	C -	Ladanyi, T. & Berko, E.	...................
Bko2002		Webb Soc., Double Star Circ. 10, 2002
Bko2003	C u	Ladanyi, T., Berko, E. & Vaskuti, G	...................
Bko2003		Webb Soc., Double Star Circ. 11, 2003
Bko2004	C u	Berko, E., Ladanyi, T. & Vaskuti, G	...................
Bko2004		Webb Soc., Double Star Circ. 12, 2004
Bko2005	C u	Berko, E., Ladanyi, T. & Vaskuti, G	...................
Bko2005		Webb Soc., Double Star Circ. 13, 2005
Bko2008	C u	Berko, E. & Vaskuti, G.	...................
Bko2008		Webb Soc., Double Star Circ. 16, 2008
Bko2008b	C u	Berko, E.	2008JDSO....4..144B
Bko2008b		JDSO 4, 144, 2008
Bko2009	C u	Berko, E.	2009JDSO....5...49B
Bko2009		JDSO 5, 49, 2009
Bko2009b	C u	Berko, E.	2009JDSO....5..168B
Bko2009b		JDSO 5, 168, 2009
Bko2009c	C u	Berko, E.	...................
Bko2009c		Webb Soc., Double Star Circ. 17, 2009
Bko2009d	C u	Berko, E.	2009JDSO....5..189B
Bko2009d		JDSO 5, 189, 2009
Bko2010a	C u	Berko, E.	2010JDSO....6...21B
Bko2010a		JDSO 6, 21, 2010
Bko2010b	C u	Berko, E.	...................
Bko2010b		Webb Soc., Double Star Circ. 18, 2010
Bko2011a	C u	Berko, E.	2011JDSO....7....2B
Bko2011a		JDSO 7, 2, 2011
Bko2011b	C u	Berko, E.	...................
Bko2011b		Webb Soc., Double Star Circ. 19, 29, 2011 (BKO 898 - BKO 980)
Bko2011c	C u	Berko, E.	...................
Bko2011c		Webb Soc., Double Star Circ. 19, 42, 2011 (BKO 981 - BKO1042)
Bko2012	C u	Berko, E.	...................
Bko2012		Webb Soc., Double Star Circ. 20, 2012
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
21453+2501	BKO 491	BC	2016	1	263	3.1	14.50	14.58	MS MS	V	214518.86+250008.3

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

WDS 21453+2501 BKO 491 BC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21453+2501 BKO 491 BC : MEASURES

No records found.

WDS 21453+2501 : 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 21453+2501 : ALADIN DSS IMAGE @ 21^h 45^m 18.86^s +25° 00' 08.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21453+2501 BKO 491 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		21453+2501	BKO 491	BC	263	3.1	1
Show		21453+2501	POU5486	AB	116	8.2	1
Show		21453+2501	BKO 491	AC	132	5.9	1
Show		21454+2501	POU5487		99	15.7	3
Show		21451+2457	POU5483		198	3.5	5
Show		21450+2457	POU5481		199	17.9	5
Show		21456+2503	POU5490		54	14.4	6
Show		21450+2505	POU5479		34	11.2	7
Show		21452+2509	POU5485		175	5.5	10
Show		21450+2450	POU5480		27	10.0	12
Show		21443+2500	POU5472		202	23.3	13
Show		21451+2512	POU5482		94	17.4	13
Show		21461+2448	TDT3149		218	0.7	16
Show		21463+2448	POU5499		2	5.2	19
Show		21464+2514	POU5500		172	9.6	21
Show		21461+2517	POU5496		249	34.3	21
Show		21447+2440	POU5476	AB	14	19.1	22
Show		21468+2507	POU5502		350	17.2	23
Show		21456+2438	POU5489		191	17.2	23
Show		21469+2511	POU5503		339	4.3	25
Show		21461+2522	POU5494		31	6.4	25
Show		21462+2439	POU5495		335	5.5	25
Show		21474+2505	POU5504		90	15.7	28
Show		21450+2431	POU5478		327	15.9	30
Show		21460+2533	L 36		295	4.7	34
Show		21478+2452	POU5507		320	14.8	34
Show		21473+2524	POU5506		189	12.7	37
Show		21476+2439	GRV 506	BC	162	72.4	37
Show		21430+2439	POU5463		238	7.8	37
Show		21480+2508	POU5508		338	3.9	38
Show		21476+2439	GRV 507	AC	268	41.1	39
Show		21476+2439	GRV 507	AB	317	92.7	39
Show		21446+2539	BU 989	AB	134	0.2	40
Show		21446+2539	STF2824	AB,C	288	14.5	40
Show		21438+2424	POU5467		359	4.4	42
Show		21482+2441	POU5509		215	21.3	44
Show		21456+2417	POU5491	AB	6	10.2	44
Show		21456+2417	POU5492	AC	49	20.0	44
Show		21484+2444	POU5511		114	9.3	45
Show		21434+2424	POU5464		110	4.0	45
Show		21441+2418	POU5471		126	8.2	46
Show		21449+2414	POU5477		58	15.8	47
Show		21490+2456	POU5512	AB	5	11.6	50
Show		21490+2456	POU5513	AC	65	11.3	50
Show		21488+2439	TDT3169		350	0.9	52
Show		21445+2409	POU5473		299	16.9	53
Show		21494+2509	POU5517		232	6.0	56
Show		21495+2458	POU5519		249	8.3	56
Show		21431+2413	CVR 252		39	9.7	57
Show		21439+2407	POU5468		295	8.5	57
Show		21472+2409	HDS3103		117	0.6	58

WDS 21453+2501 : COMPONENTS

	A	B
B	pa=117.0° sep=7.93"
C	pa=134.4° sep=5.58"	pa=264.3° sep=3.10"

21453+2501 A

Coord arcsec 2000

214518.34+250011.9

Mag

13.6

PmRA

-13.00

PmDE

-3.0

21453+2501 B

Coord arcsec 2000	214518.86+250008.3		Coord calc	214518.86+250008.3		Mag	14.5		Spectral class	MS (red)
PmRA	15.00		PmDE	-17.0		Calc delta mag	0.9

21453+2501 C

Coord arcsec 2000

214518.63+250008.0

Mag

Calc delta mag

0.4

Calc coord

yes