20138+2945 TOB 179

20^h 13^m 49.93^s +29° 44' 46.5" P.A. 91.00 sep 23.6 mag 10.74,12.98 Sp B2

Coord 2000	20138+2945	Discov num	TOB 179	Comp		Coord arcsec 2000	20 13 49.93 +29 44 46.5
Date first	1984	Date last	2015	Obs	9
Pa first	92	Pa last	90.6	P.A. Now (θ)	90.6°
Sep first	22.7	Sep last	23.638	Sep. Now (ρ)	23.638"
Mag pri	10.74	Mag sec	12.98	delta mag (ΔM)	2.24	Spectral class	B2 (blue-white)
Pri motion ra	-004	Sec motion ra	+011
Pri motion dec	-021	Sec motion dec	-017
Notes

rPM=0.726

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2166-00241-1

Gaia DR2

2029611264174648576

WDS 20138+2945 TOB 179 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Tob2000	Mb u	Tobal, T.	2000O&T....52...67T
Tob2000		Obs. et Travaux 52, 67, 2000
Tob2003	M+ j	Tobal, T.	...................
Tob2003	+Pa	OAG Gen. Cat. 10,000 vis. double star meas. 1970-2003 (J2000.0), 2003
Tob2003	+Z
Tob2005a	Pu j	Tobal, T.	...................
Tob2005a		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 1, 2004)
Tob2005b	Pu j	Tobal, T.	...................
Tob2005b		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 2, 2004)
Tob2005c	Pu j	Tobal, T.	...................
Tob2005c		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 3, 2004)
Tob2005d	Pp j	Tobal, T.	...................
Tob2005d		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 4, 2004)
Tob2005e	Pp j	Tobal, T.	...................
Tob2005e		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 5, 2004)
Tob2005f	Pp j	Tobal, T.	...................
Tob2005f		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 6, 2004)
Tob2005g	Pp j	Tobal, T.	...................
Tob2005g		Webb Soc. Double Star Circ. 13, 2005 (also OAG General Cat. Suppl. 7, 2004)
Tob2005h	Pu j	Tobal, T.	...................
Tob2005h		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 8, 2005)
Tob2005i	Pp j	Tobal, T.	...................
Tob2005i		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 9, 2005)
Tob2005j	Pp j	Tobal, T. & Martin, I.T.	...................
Tob2005j		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 10, 2005)
Tob2006a	Pp j	Tobal, T.	...................
Tob2006a		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 11, 2006)
Tob2006b	Pp j	Tobal, T.	...................
Tob2006b		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 12, 2006)
Tob2006c	Pa j	Tobal, T.	...................
Tob2006c		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 13, 2006)
Tob2006d	Pa j	Tobal, T.	...................
Tob2006d		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 14, 2006)
Tob2007a	Pu j	Tobal, T.	...................
Tob2007a		Webb Soc., Double Star Circ. 15, 2007 (also OAG General Cat. Suppl. 15, 2007)
Tob2007b	Pa j	Tobal, T.	...................
Tob2007b		Webb Soc., Double Star Circ. 16, 2008 (also OAG General Cat. Suppl. 20, 2007)
Tob2008	Pa j	Tobal, T.	...................
Tob2008		OAG General Cat. Suppl. 21, 2008
Tob2009	Pa j	Tobal, T.	...................
Tob2009		Webb Soc., Double Star Circ. 18, 2010 (also OAG General Cat. Suppl. 23, 2009)
Tob2012a	Pa j	Tobal, T.	...................
Tob2012a		GWP Catalog, part I (equatorial zone), OAG CPMWP Survey (2012)
Tob2012b	not -	Tobal, T.	...................
Tob2012b		private communication, 2012
Tob2012c	Pa j	Tobal, T.	...................
Tob2012c		Webb Soc., Double Star Circ. 20, 2012 (also OAG General Cat. Suppl. 26, 2010)
Tob2016	Pa j	Tobal, T.	...................
Tob2016		GWP Catalog, part II (equatorial zone), OAG CPMWP Survey (2016)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20138+2945	TOB 179		1999	2	91	23.5	10.60	12.40		D	201349.93+294446.5
20138+2945	TOB 179		2002	3	91	23.5	10.60	12.40		D	201349.93+294446.5
20138+2945	TOB 179		2010	4	91	23.3	10.74	12.98	B2		201349.93+294446.5
20138+2945	TOB 179		2015	5	91	23.6	10.74	12.98	B2		201349.93+294446.5

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

WDS 20138+2945 TOB 179 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20138+2945 TOB 179 : MEASURES

No records found.

WDS 20138+2945 : VIRTUAL EYEPIECE

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

WDS 20138+2945 : ALADIN DSS IMAGE @ 20^h 13^m 49.93^s +29° 44' 46.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20138+2945 TOB 179 : 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		20138+2945	TOB 179		91	23.6
Show		20139+2942	TOB 180		299	23.4	3
Show		20134+2941	MLB 661		167	3.9	7
Show		20152+3006	TDT2121		11	2.0	28
Show		20156+2927	TDS1053		302	1.0	30
Show		20124+2923	AG 401		306	4.0	30
Show		20160+2929	MLB 478	AB	13	6.3	32
Show		20160+2929	MLB 478	AC	76	153.6	32
Show		20129+2913	A 1203	BC	176	0.4	35
Show		20129+2913	HJ 1492	A,BC	54	18.7	35
Show		20134+2910	TDT2100		98	0.7	36
Show		20167+2932	OSO 121	AB	165	13.2	39
Show		20167+2932	OSO 121	AC	283	15.2	39
Show		20167+2932	OSO 121	AD	190	18.9	39
Show		20167+2932	OSO 121	AE	259	25.2	39
Show		20110+2928	TDT2056		358	1.5	41
Show		20124+2908	A 1201		158	0.3	42
Show		20140+2859	TDS1052		164	1.6	46
Show		20140+3031	COU1475		87	0.2	47
Show		20135+3031	J 3063		76	4.7	47
Show		20114+2910	A 1200		197	5.4	47
Show		20173+2926	TDT2142		316	1.0	49
Show		20101+2941	TDT2039		177	0.4	49
Show		20105+2920	HDS2874	Ca,Cb	251	0.4	49
Show		20102+2930	TDT2041		189	1.2	50
Show		20124+2856	MLB 531		195	1.7	51
Show		20107+3015	TDT2051		242	2.0	51
Show		20105+2920	BRT 46	AB	79	5.3	51
Show		20105+2920	MLB 477	AC	24	113.7	51
Show		20103+2920	BAC 1		45	16.5	52
Show		20179+2945	TDT2149		316	0.8	54
Show		20177+2922	TDT2145		186	0.7	55
Show		20175+2909	POP1229	Aa,Ab	217	0.4	61
Show		20175+2909	BU 441	AB	64	6.2	61
Show		20180+2913	POP 200		205	6.4	63
Show		20182+2912	A 1205		96	1.2	66
Show		20115+2846	MLB 530		32	7.9	67
Show		20149+2840	HO 122	AB	72	1.4	67
Show		20149+2840	HO 122	AC	152	19.9	67
Show		20113+3042	TDT2061		353	0.4	67
Show		20095+3029	GRV 315		244	22.3	72
Show		20083+2950	A 1198	AB	229	1.5	72
Show		20109+3047	HDS2876		67	0.3	74
Show		20191+2915	COU1477		102	0.6	76
Show		20196+2956	A 1207		351	0.6	76
Show		20105+2841	TDT2048		136	0.6	78
Show		20122+2829	MLB 660		290	6.2	80
Show		20110+2834	COU1323		334	0.8	81
Show		20123+2824	TDT2081		157	0.5	84
Show		20188+2849	J 3073		16	4.5	85
Show		20118+3108	COU1474	AB	59	2.9	88

WDS 20138+2945 : COMPONENTS

	A
B	pa=90.7° sep=20.52"

20138+2945 A

Componente originario normalizzato	AB		Coord arcsec 2000	201349.93+294446.5		Mag	10.74		Spectral class	B2 (blue-white)
PmRA	-4.00		PmDE	-21.0		Tycho2	2166-00241-1

Tycho2

Tycho2	2166-00241-1	Pflag		RAmdeg	303.45804496	DEmdeg	29.74629294
PmRA	-7.7	PmDE	-22.0	E RAmdeg	26	E DEmdeg	27
E pmRA	2.1	E pmDE	2.2	EpRAm	1987.27	EpDEm	1989.35
Num	4	Q RAmdeg	0.3	Q DEmdeg	0.9	Q pmRA	0.3
Q pmDE	0.9	BTmag	11.392	E BTmag	0.051	VTmag	10.760
E VTmag	0.046	Prox	689	TYC	T	HIP
CCDM		RAdeg	303.45806444	DEdeg	29.74634556	EpRA 1990	1.54
EpDE 1990	1.60	E RAdeg	31.7	E DEdeg	28.3	Posflg
Corr	0.2

20138+2945 B

Componente originario normalizzato	AB		Coord arcsec 2000	201351.51+294446.3		Mag	12.98		PmRA	11.00
PmDE	-17.0		Calc delta mag	2.24		Calc coord	yes