20090+3258 SEI 916

20^h 09^m 00.37^s +32° 57' 29.4" P.A. 29.00 sep 5.4 mag 10.50,11.00

Coord 2000	20090+3258	Discov num	SEI 916	Comp		Coord arcsec 2000	20 09 00.37 +32 57 29.4
Date first	1893	Date last	1893	Obs	1
Pa first	29	Pa last	29.4	P.A. Now (θ)	29.4°
Sep first	5.4	Sep last	5.442	Sep. Now (ρ)	5.442"
Mag pri	10.50	Mag sec	11.00	delta mag (ΔM)	0.5	Spectral class
Pri motion ra		Sec motion ra
Pri motion dec		Sec motion dec
Notes	N X (See Notes, Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

WDS 20090+3258 SEI 916 : NOTES

discov_num	notes	refcode
SEI 916	Neither component seen on POSS plate; may be flaws on AC Potsdam plate
	A likely plate flaw.	Grv2021b

REFERENCES

refcode	metd	author	reference
Grv2021b	not -	Greaves, J.	.
Grv2021b		private communication, 2021 (23 Feb 2021 email)

DISCOVERER

idgroup	discov	author
1	SEI	Scheiner, J.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20090+3258	SEI 916		1893	1	29	5.4	10.50	11.00		N	200900.37+325729.4

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WDS 20090+3258 SEI 916 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20090+3258 SEI 916 : MEASURES

No records found.

WDS 20090+3258 : VIRTUAL EYEPIECE

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WDS 20090+3258 : ALADIN DSS IMAGE @ 20^h 09^m 00.37^s +32° 57' 29.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20090+3258 SEI 916 : 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		20090+3258	SEI 916		29	5.4
Show		20095+3301	GRV 316		36	27.8	9
Show		20094+3309	GIC 162		180	35.2	12
Show		20092+3243	TOB 171		117	19.1	14
Show		20094+3244	SEI 925		338	22.9	15
Show		20079+3246	TDT2007		134	2.4	19
Show		20081+3241	SEI 906		283	23.8	20
Show		20097+3240	SEI 933		335	4.5	21
Show		20083+3318	LDT 17		238	0.4	23
Show		20077+3240	TOB 168		292	18.3	24
Show		20108+3320	SEI 952		194	5.9	26
Show		20080+3235	STF2633	AB	101	11.6	26
Show		20080+3235	HJ 1483	AC	264	46.4	26
Show		20080+3235	HJ 1483	AD	249	71.0	26
Show		20080+3235	SEI 900	CD	224	28.8	27
Show		20075+3236	SEI 895		32	24.5	29
Show		20096+3325	HJ 1485		276	4.7	29
Show		20069+3246	GYL 32		6	79.9	29
Show		20099+3324	J 1163		281	2.4	29
Show		20065+3302	GYL 23		180	13.3	32
Show		20105+3323	TOB 50		269	31.9	33
Show		20081+3329	TDT2010		55	0.9	34
Show		20105+3225	SEI 943		299	22.5	38
Show		20096+3218	ES 2431		192	5.9	41
Show		20059+3247	COU1807		299	0.2	41
Show		20118+3321	TDT2075		104	2.6	42
Show		20068+3329	ES 2352	BC	248	4.3	42
Show		20091+3339	STF2638		69	14.0	42
Show		20068+3329	ES 2352	AB	52	32.4	42
Show		20057+3255	TDT1968		244	0.6	42
Show		20056+3303	TOI1193		255	0.1	43
Show		20106+3338	S 738	AB	106	42.4	46
Show		20106+3338	STT 541	BC	184	1.8	46
Show		20062+3328	ES 2373	AB	104	6.1	48
Show		20062+3328	ES 2373	AC	53	12.6	48
Show		20053+3307	COU1806		287	1.2	48
Show		20120+3227	SEI 984		324	3.3	49
Show		20113+3338	COU1630		66	0.1	50
Show		20121+3330	BKO 898		65	4.7	51
Show		20057+3329	ES 2351		276	5.0	53
Show		20120+3333	COU1631		329	0.4	53
Show		20132+3309	SKF1649		252	20.3	54
Show		20127+3330	FAL 67		165	21.3	57
Show		20134+3253	SHN 242		-1	0.2	57
Show		20081+3155	SEI 905		105	12.9	60
Show		20068+3203	SEI 881		313	7.2	61
Show		20104+3356	COU1629		155	1.5	61
Show		20132+3225	SEI1015		67	14.4	63
Show		20049+3334	ES 2350	AB	224	2.4	64
Show		20049+3334	ES 2350	BC	241	4.4	64
Show		20127+3213	SEI1002		336	9.9	65

WDS 20090+3258 : COMPONENTS

	A
B	pa=25.3° sep=5.24"

20090+3258 A

Componente originario normalizzato

Coord arcsec 2000

200900.37+325729.4

Mag

10.5

20090+3258 B

Componente originario normalizzato	AB		Coord arcsec 2000	200900.55+325734.1		Mag	11		Calc delta mag	0.5
Calc coord	yes