21397+2041 GMC 23

21^h 39^m 44.08^s +20° 40' 39.3" P.A. 342.00 sep 10.5 mag 16.40,19.20 Sp K7V+M3V

Coord 2000	21397+2041	Discov num	GMC 23	Comp		Coord arcsec 2000	21 39 44.08 +20 40 39.3
Date first	1951	Date last	2016	Obs	7
Pa first	341	Pa last	342	P.A. Now (θ)	342°
Sep first	10.7	Sep last	10.511	Sep. Now (ρ)	10.511"
Mag pri	16.40	Mag sec	19.20	delta mag (ΔM)	2.8	Spectral class	K7V+M3V (yellow-orange/red)
Pri motion ra	-017	Sec motion ra	-018
Pri motion dec	-028	Sec motion dec	-029
Notes	V (Proper motion indicates physical)

rPM=0.041 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Pegasus

Gaia DR2

1792806485647921152

WDS 21397+2041 GMC 23 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
GMc2011	C u	Micello, G.	2011JDSO....7...37M
GMc2011		JDSO 7, 37, 2011
GMc2011b	C w	Preti, L. & Micello, G.	2011JDSO....7..144P
GMc2011b		JDSO 7, 144, 2011
GMc2012	C u	Micello, G.	2012JDSO....8...28M
GMc2012		JDSO 8, 28, 2012
GMc2012b	P j	Micello, G.	.
GMc2012b	+C	Il Bollettino Delle Stelle Doppie 2, 14, 2012
GMc2012c	P+ w	Micello, G.	2012OED.....9..117M
GMc2012c	+E2	El Observador de Estrellas Dobles, Issue #9, 117, 2012
GMc2012d	C j	Adigrat, A. & Micello, G.	.
GMc2012d	+M	Il Bollettino Delle Stelle Doppie 2, 21, 2012
GMc2012e	C u	Micello, G.	2012JDSO....8..193M
GMc2012e		JDSO 8, 193, 2012
GMc2012f	P+ j	Micello, G.	.
GMc2012f	+C	Il Bollettino Delle Stelle Doppie 1, 14, 2012
GMc2012g	C u	Micello, G.	...................
GMc2012g		Webb Soc., Double Star Circ. 20, 2012
GMc2012h	M j	Micello, G.	.
GMc2012h		Il Bollettino Delle Stelle Doppie 2, 26, 2012
GMc2012i	P -	Micello, G.	.
GMc2012i		Il Bollettino Delle Stelle Doppie 3, 13, 2012
GMc2013	C j	Micello, G.	.
GMc2013		Il Bollettino Delle Stelle Doppie 4, 18, 2013
GMc2013b	P -	Micello, G.	.
GMc2013b		Il Bollettino Delle Stelle Doppie 5, 5, 2013
GMc2013c	C j	Micello, G.	.
GMc2013c		Il Bollettino Delle Stelle Doppie 6, 23, 2013
GMc2013c		(Date corrected from 2012.829 to 2012.892 before conversion to Julian epoch)
GMc2013d	C -	Micello, G.	.
GMc2013d	+P	Il Bollettino Delle Stelle Doppie 7, 9, 2013
GMc2014	C j	Micello, G.	.
GMc2014		Il Bollettino Delle Stelle Doppie 8, 21, 2014
GMc2016	C -	Micello, G.	.
GMc2016	+orb	Il Bollettino Delle Stelle Doppie 17, 5, 2016
GMc2019	C j	Micello, G.	.
GMc2019		Il Bollettino Delle Stelle Doppie 28, 15, 2019

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21397+2041	GMC 23		1994	2	343	10.3	16.40	19.20	K7V+M3V	V	213944.08+204039.3
21397+2041	GMC 23		2010	4	342	10.3	16.40	19.20	K7V+M3V	V	213944.08+204039.3
21397+2041	GMC 23		2015	5	342	10.5	16.40	19.20	K7V+M3V	V	213944.08+204039.3
21397+2041	GMC 23		2016	7	342	10.5	16.40	19.20	K7V+M3V	V	213944.08+204039.3

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

WDS 21397+2041 GMC 23 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21397+2041 GMC 23 : MEASURES

No records found.

WDS 21397+2041 : VIRTUAL EYEPIECE

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WDS 21397+2041 : ALADIN DSS IMAGE @ 21^h 39^m 44.08^s +20° 40' 39.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21397+2041 GMC 23 : NEIGHBORHOODS

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

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		21397+2041	GMC 23		342	10.5
Show		21393+2043	STT 445		120	1.0	7
Show		21391+2036	STT 444		277	8.0	11
Show		21379+2102	YR 30		340	0.1	34
Show		21417+2100	UC 4531		213	69.8	34
Show		21399+2005	UC 4521		35	12.3	36
Show		21403+1955	SLW1246		345	155.2	47
Show		21427+2102	J 614		307	2.0	48
Show		21433+2046	J 852		92	4.2	52
Show		21419+1949	CBL 533		123	64.8	61
Show		21408+2140	LDS4903		100	81.0	62
Show		21424+2140	GRV 495		146	33.8	71
Show		21352+2124	BU 74		338	1.0	78
Show		21434+2147	COU 536		227	1.0	84
Show		21429+2152	HJ 1683	AB	169	12.6	85
Show		21429+2152	HJ 1683	AC	315	27.3	85
Show		21429+2152	ABH 150	AD	28	75.5	85
Show		21347+1953	TDT3040		23	0.9	86
Show		21457+2100	UC 4553		184	63.7	87
Show		21409+1915	HDS3086		66	1.1	87
Show		21399+1914	COU 330		190	0.5	88
Show		21451+1954	RAO 466		249	0.6	89
Show		21431+2157	BRT2499		206	4.8	90
Show		21334+2018	J 613		222	5.1	92
Show		21461+2111	AG 277		62	2.7	94
Show		21330+2043	STF2804	AB	359	3.4	95
Show		21330+2043	STF2804	AC	103	97.1	95
Show		21368+1915	BRT2498		268	5.0	96
Show		21461+2001	HU 376		14	1.4	99
Show		21385+1902	TDT3077	AB	294	0.4	100
Show		21385+1902	SKF 292	AB,C	91	16.2	100
Show		21326+2048	GMC 21		130	10.5	101
Show		21362+1912	TDT3052		197	1.7	102
Show		21349+1923	TDT3041		350	0.8	104
Show		21384+1858	TDT3075		250	1.0	105
Show		21426+1900	HO 165		63	0.8	109
Show		21420+1856	DAM 16	CD	90	3.5	109
Show		21420+1856	LBU 2	Aa,Ab	22	0.6	110
Show		21420+1856	STF2818	AB	24	26.8	110
Show		21420+1856	FOX9055	AC	267	76.5	110
Show		21368+1858	TDT3062		151	0.6	111
Show		21455+2156	AG 276		1	2.0	111
Show		21458+2155	HU 1656		305	2.2	114
Show		21373+2230	CVR 911		174	10.5	115
Show		21481+2100	HU 378		298	0.2	119
Show		21473+2134	GRV 505		327	45.5	119
Show		21466+1929	COU 431		184	0.5	120
Show		21313+2112	GRV 473		26	46.4	122
Show		21429+1843	SLW1251		328	123.9	126
Show		21465+2210	HO 465	BC	80	4.9	130
Show		21465+2210	HDS3101	Aa,Ab	22	0.1	131

WDS 21397+2041 : COMPONENTS

	A
B	pa=343.1° sep=10.45"

21397+2041 A

Componente originario normalizzato	AB		Coord arcsec 2000	213944.08+204039.3		Mag	16.4		Spectral class	K7V (yellow-orange)
PmRA	-17.00		PmDE	-28.0

21397+2041 B

Componente originario normalizzato	AB		Coord arcsec 2000	213943.86+204049.3		Mag	19.2		Spectral class	M3V (red)
PmRA	-18.00		PmDE	-29.0		Calc delta mag	2.8		Calc coord	yes