21108+3738 ALI 681

21^h 10^m 42.87^s +37° 37' 37.9" P.A. 21.00 sep 12.0 mag 11.06,12.90

Coord 2000	21108+3738	Discov num	ALI 681	Comp		Coord arcsec 2000	21 10 42.87 +37 37 37.9
Date first	1929	Date last	2015	Obs	9
Pa first	19	Pa last	20.5	P.A. Now (θ)	20.5°
Sep first	11.9	Sep last	11.981	Sep. Now (ρ)	11.981"
Mag pri	11.06	Mag sec	12.90	delta mag (ΔM)	1.84	Spectral class
Pri motion ra	-002	Sec motion ra	+011
Pri motion dec	-004	Sec motion dec	+000
Notes

rPM=1.236

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3169-00940-1

Gaia DR2

1868877954257646208

WDS 21108+3738 ALI 681 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Ali1949	Pa -	Ali, A.	1949AJ.....54..199A
Ali1949		AJ 54, 199, 1949
Ali1950	Pa -	Ali, A.	1950AJ.....55..209A
Ali1950		AJ 55, 208, 1950
Ali1952	Pa -	Ali, A.	1952AJ.....57..146A
Ali1952		AJ 57, 146, 1952
Ali1955	Pa -	Ali, A.	.
Ali1955		Pub. Nizamiah Obs. 13, Pt. 2, 1955
Ali9999	Pa -	Ali, A.	...................
Ali9999	+Po	Unpublished, manuscript or reference not found.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
21108+3738	ALI 681		1998	3	20	11.8	11.06	12.90		D	211042.87+373737.9
21108+3738	ALI 681		2002	4	20	11.9	11.06	12.90		D	211042.87+373737.9
21108+3738	ALI 681		2010	5	19	11.8	11.06	12.90			211042.87+373737.9
21108+3738	ALI 681		2015	6	21	12.0	11.06	12.90			211042.87+373737.9

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WDS 21108+3738 ALI 681 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21108+3738 ALI 681 : MEASURES

No records found.

WDS 21108+3738 : VIRTUAL EYEPIECE

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WDS 21108+3738 : ALADIN DSS IMAGE @ 21^h 10^m 42.87^s +37° 37' 37.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21108+3738 ALI 681 : 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		21108+3738	ALI 681		21	12.0	1
Show		21106+3737	HU 1310		22	2.8	2
Show		21105+3738	SEI1430		132	18.6	3
Show		21107+3741	SEI1432		42	8.0	3
Show		21105+3733	TDT2804		117	0.8	5
Show		21102+3726	HU 1309	AB	171	3.0	14
Show		21102+3726	HU 1309	AC	239	21.9	14
Show		21095+3746	GRV 427		201	18.2	17
Show		21110+3757	CRB 139		94	15.2	20
Show		21092+3728	SEI1418		52	22.0	21
Show		21103+3803	GUR 3		344	1.8	26
Show		21094+3716	SEI1419		141	17.7	28
Show		21130+3732	HEI 283	AB	73	35.7	28
Show		21125+3720	HJ 1623	A,BC	152	15.3	28
Show		21125+3720	FOX 41	BC	124	0.9	29
Show		21130+3732	HEI 283	BC	80	3.3	29
Show		21087+3719	SEI1415		256	31.7	30
Show		21133+3743	SMA 142		176	12.4	31
Show		21133+3734	ES 208		142	3.8	32
Show		21133+3744	SMA 141		149	7.3	32
Show		21104+3705	SEI1427		164	25.3	33
Show		21129+3717	SEI1449		295	13.9	34
Show		21083+3757	TDT2778		228	0.8	35
Show		21123+3808	TDT2822		185	0.6	36
Show		21108+3814	TDT2806		259	0.4	37
Show		21127+3806	GUR 11		39	0.4	37
Show		21127+3807	GUR 12		323	2.6	38
Show		21124+3810	COU1971	AB	283	0.6	38
Show		21124+3810	GUR 9	AC	112	16.9	38
Show		21124+3810	GUR 9	AD	64	9.8	38
Show		21124+3810	GUR 9	AE	75	18.4	38
Show		21089+3706	TDT2784		124	2.4	39
Show		21088+3707	SEI1416		59	6.0	39
Show		21133+3803	TOB 214		212	23.4	40
Show		21099+3659	SEI1422		330	20.5	40
Show		21108+3818	ALI 682		129	8.9	41
Show		21117+3818	SMA 136		122	3.8	42
Show		21140+3755	SEI1457		27	10.6	43
Show		21111+3821	ES 207		244	2.4	44
Show		21138+3800	KPP 786		20	6.8	44
Show		21076+3757	ES 2060	AB	249	5.7	44
Show		21076+3757	ES 2060	AC	265	18.1	44
Show		21123+3658	TDT2823		149	2.2	44
Show		21138+3711	COU1816	AB	248	1.8	46
Show		21138+3711	WSI 37	AC	336	10.0	46
Show		21129+3815	GUR 14		204	7.8	46
Show		21070+3724	TDT2763		215	2.0	47
Show		21095+3822	GUR 2		67	4.0	47
Show		21112+3652	SEI1436		106	13.3	47
Show		21083+3816	SEI1411		4	5.1	48
Show		21147+3734	SEI1465		33	25.6	48

WDS 21108+3738 : COMPONENTS

	A
B	pa=16.5° sep=11.70"

21108+3738 A

Componente originario normalizzato	AB		Coord arcsec 2000	211042.87+373737.9		Mag	11.06		PmRA	-2.00
PmDE	-4.0		Tycho2	3169-00940-1

Tycho2

Tycho2	3169-00940-1	Pflag		RAmdeg	317.67861385	DEmdeg	37.62721921
PmRA	2.4	PmDE	-2.7	E RAmdeg	37	E DEmdeg	33
E pmRA	1.7	E pmDE	1.6	EpRAm	1985.38	EpDEm	1986.51
Num	5	Q RAmdeg	0.9	Q DEmdeg	0.5	Q pmRA	0.9
Q pmDE	0.6	BTmag	11.405	E BTmag	0.056	VTmag	11.057
E VTmag	0.063	Prox	372	TYC	T	HIP
CCDM		RAdeg	317.67860694	DEdeg	37.62722500	EpRA 1990	1.68
EpDE 1990	1.73	E RAdeg	39.4	E DEdeg	34.4	Posflg
Corr	0.1

21108+3738 B

Componente originario normalizzato	AB		Coord arcsec 2000	211043.15+373749.1		Mag	12.9		PmRA	11.00
PmDE	0.0		Calc delta mag	1.84		Calc coord	yes