20422+4041 MLB 23

20^h 42^m 10.11^s +40° 40' 51.8" P.A. 41.00 sep 7.6 mag 9.00,10.90 Sp G0

Coord 2000	20422+4041	Discov num	MLB 23	Comp		Coord arcsec 2000	20 42 10.11 +40 40 51.8
Date first	1892	Date last	2015	Obs	16
Pa first	43	Pa last	40.7	P.A. Now (θ)	40.7°
Sep first	7.0	Sep last	7.617	Sep. Now (ρ)	7.617"
Mag pri	9.00	Mag sec	10.90	delta mag (ΔM)	1.9	Spectral class	G0 (yellow)
Pri motion ra	+083	Sec motion ra
Pri motion dec	+011	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3170-00667-1

Gaia DR2

2066050213373111296

WDS 20422+4041 MLB 23 : 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
20422+4041	MLB 23		2000	10	41	7.7	9.00	10.90	G0	D	204210.11+404051.8
20422+4041	MLB 23		2002	11	41	7.7	9.00	10.90	G0	D	204210.11+404051.8
20422+4041	MLB 23		2010	12	40	7.0	9.00	10.90	G0		204210.11+404051.8
20422+4041	MLB 23		2015	12	41	7.6	9.00	10.90	G0		204210.11+404051.8

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

WDS 20422+4041 MLB 23 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20422+4041 MLB 23 : MEASURES

No records found.

WDS 20422+4041 : 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 20422+4041 : ALADIN DSS IMAGE @ 20^h 42^m 10.11^s +40° 40' 51.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20422+4041 MLB 23 : 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		20422+4041	MLB 23		41	7.6
Show		20429+4036	MLB 24		175	5.9	9
Show		20413+4051	COU2419		69	0.8	15
Show		20432+4026	COU2421		110	0.3	20
Show		20440+4030	SLN 85		203	9.1	24
Show		20436+4024	DAM1256		106	9.6	24
Show		20420+4015	A 1433		24	0.8	27
Show		20446+4040	HJ 1573		274	9.8	28
Show		20446+4041	HJ 1574		278	7.4	28
Show		20426+4013	TDT2488		138	0.5	29
Show		20444+4027	TDT2510		157	0.9	29
Show		20396+4035	STT 410	AB	3	0.9	31
Show		20396+4035	STT 410	AB,C	70	68.6	31
Show		20396+4035	STT 410	AB,D	327	106.6	31
Show		20444+4103	COU2423	AB	180	0.3	35
Show		20444+4103	GRV 375	AC	197	31.4	35
Show		20405+4010	TOB 196	BC	32	23.4	36
Show		20405+4010	SEI1214	AB	78	20.3	37
Show		20454+4023	OSO 133	AB	114	12.0	41
Show		20454+4023	OSO 133	AC	236	11.7	41
Show		20454+4023	OSO 133	AD	67	21.8	41
Show		20454+4023	OSO 133	AE	8	22.4	41
Show		20428+4123	RAO 619		141	0.6	43
Show		20434+4001	BRT2272		285	5.1	43
Show		20392+4017	ES 1980		60	8.3	44
Show		20421+4125	COU2420		90	0.5	44
Show		20387+4024	ES 1979		303	7.6	45
Show		20419+3956	SEI1221		254	2.0	45
Show		20390+4109	TDT2451		105	0.7	46
Show		20453+4010	COU2293		201	1.1	47
Show		20456+4014	TDT2519		347	1.3	48
Show		20454+4011	TDT2518		203	0.7	48
Show		20419+3953	SEI1222		77	25.4	48
Show		20382+4022	TDT2439		22	0.4	50
Show		20395+4002	BRT2269		199	5.0	50
Show		20428+4132	ES 1571		39	7.4	52
Show		20416+3950	COU2290		43	0.5	52
Show		20402+3953	MLB 885		72	1.7	53
Show		20434+4131	HJ 1571		59	7.3	53
Show		20466+4020	ES 1982		301	3.9	54
Show		20427+3947	TDT2491		275	1.4	55
Show		20379+4014	SEI1199		99	9.3	56
Show		20447+4131	MLB 25		207	5.7	58
Show		20379+4005	ES 1978		136	2.9	60
Show		20434+3943	TDT2497		317	0.5	60
Show		20476+4038	CNT 9		292	9.0	63
Show		20377+4029	HJ 610		176	25.6	65
Show		20367+4021	NML 2		350	0.6	66
Show		20361+4056	CAN 23	AB	333	4.8	71
Show		20361+4056	CAN 23	AC	245	5.4	71
Show		20361+4056	CAN 23	AD	175	6.6	71

WDS 20422+4041 : COMPONENTS

	A
B	pa=33.1° sep=6.89"

20422+4041 A

Componente originario normalizzato	AB		Coord arcsec 2000	204210.11+404051.8		Mag	9		Spectral class	G0 (yellow)
PmRA	83.00		PmDE	11.0		Tycho2	3170-00667-1

Tycho2

Tycho2	3170-00667-1	Pflag		RAmdeg	310.54215934	DEmdeg	40.68105723
PmRA	83.6	PmDE	9.6	E RAmdeg	9	E DEmdeg	9
E pmRA	1.2	E pmDE	1.2	EpRAm	1990.93	EpDEm	1991.02
Num	6	Q RAmdeg	0.4	Q DEmdeg	0.8	Q pmRA	0.4
Q pmDE	0.7	BTmag	9.729	E BTmag	0.020	VTmag	8.999
E VTmag	0.015	Prox	999	TYC	T	HIP
CCDM		RAdeg	310.54190389	DEdeg	40.68103528	EpRA 1990	1.65
EpDE 1990	1.74	E RAdeg	9.1	E DEdeg	8.8	Posflg
Corr	0.1

CCDM

Ccdm	20422+4041	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-1.93	DDEs	-7.9
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	8.8	Sp		PmNote	*
PmRA	85	PmDE	11	Dm number	+40 4284	Cat1	BD
Name2	+40 2096	Cat2	AGK2/3	HD		M HD
ADS BDS	A14185	M ADS BDS		N IDS		IDS	20385N4019A
HIC

20422+4041 B

Componente originario normalizzato	AB		Coord arcsec 2000	204210.44+404057.6		Mag	10.9		Calc delta mag	1.9
Calc coord	yes

CCDM

Ccdm	20422+4041	RComp		Comp	B	Note1
Note2		Discov num	MLB 23	DRAs		DDEs
R dRAs		Year	1917	Theta	044	Rho	7.7
Obs	4	Vmag	10.7	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14185	M ADS BDS		N IDS		IDS	20385N4019B
HIC