21490+4254 TDT 3172

21^h 48^m 57.78^s +42° 54' 14.9" P.A. 164.00 sep 0.4 mag 10.51,10.54

Coord 2000	21490+4254	Discov num	TDT3172	Comp		Coord arcsec 2000	21 48 57.78 +42 54 14.9
Date first	1991	Date last	1991	Obs	1
Pa first	164	Pa last	163.8	P.A. Now (θ)	163.8°
Sep first	0.4	Sep last	0.39	Sep. Now (ρ)	0.39"
Mag pri	10.51	Mag sec	10.54	delta mag (ΔM)	0.03	Spectral class
Pri motion ra	-036	Sec motion ra	-036
Pri motion dec	-098	Sec motion dec	-098
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3192-00124-1

Gaia DR2

1972724800275689984

WDS 21490+4254 TDT 3172 : NOTES

No records found.

REFERENCES

No records found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21490+4254	TDT3172		1991	1	164	0.4	10.51	10.54			214857.78+425414.9

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WDS 21490+4254 TDT 3172 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21490+4254 TDT 3172 : MEASURES

No records found.

WDS 21490+4254 : VIRTUAL EYEPIECE

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WDS 21490+4254 : ALADIN DSS IMAGE @ 21^h 48^m 57.78^s +42° 54' 14.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21490+4254 TDT 3172 : 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		21490+4254	TDT3172		164	0.4
Show		21491+4242	ARG 95		338	23.1	13
Show		21474+4256	A 405		277	1.9	18
Show		21490+4316	BRT1152		231	6.7	22
Show		21489+4321	TDT3171		286	0.5	28
Show		21490+4323	PKO 16		96	5.9	29
Show		21462+4254	COU1979		261	0.4	31
Show		21492+4326	PKO 17		149	13.6	32
Show		21462+4239	ES 1460	AB	8	1.8	32
Show		21462+4239	ES 1460	AC	238	20.3	32
Show		21521+4313	TDT3204		30	0.9	39
Show		21454+4258	ES 1459		282	2.3	41
Show		21478+4212	TDT3158		230	2.7	45
Show		21448+4254	TDT3132		293	2.0	46
Show		21519+4221	HO 172	AB	82	10.7	47
Show		21519+4221	HO 172	AC	40	89.7	47
Show		21519+4221	HO 172	AD	61	480.9	47
Show		21519+4221	FYM 113	AE	20	64.4	47
Show		21519+4221	JOD 22	BF	48	2.1	47
Show		21511+4209	COU1822	AB	19	0.2	52
Show		21443+4256	TDT3129		76	0.9	52
Show		21525+4332	TDT3212		39	1.7	55
Show		21443+4234	OSO 156	AB	331	7.6	55
Show		21443+4234	OSO 156	AC	57	16.1	55
Show		21443+4234	OSO 156	AD	18	22.7	55
Show		21539+4256	ES 1461		352	6.1	55
Show		21489+4349	TDT3170		94	1.4	55
Show		21532+4324	GRV 517		212	45.9	57
Show		21541+4307	POP 184		241	11.6	58
Show		21502+4356	TDS1148		97	1.1	63
Show		21531+4339	TDT3215		110	0.8	64
Show		21487+4357	GRV 509		177	56.4	64
Show		21456+4202	TDT3143		34	0.5	65
Show		21548+4310	TDT3234		343	2.0	67
Show		21473+4148	A 404	AB	100	3.8	69
Show		21473+4148	A 404	AC	294	14.0	69
Show		21427+4303	TDT3117		163	0.8	69
Show		21454+4356	HO 168	AB	42	0.8	74
Show		21454+4356	HO 168	AC	267	18.7	74
Show		21454+4356	HO 168	AD	21	28.3	74
Show		21454+4356	HO 168	AE	22	28.3	74
Show		21552+4229	TDT3241		308	0.7	74
Show		21556+4241	KPP4258		257	28.6	74
Show		21426+4226	STF2820	AB	230	16.0	76
Show		21426+4226	BU 1505	AC	200	33.6	76
Show		21426+4226	BU 1505	BC	177	21.4	77
Show		21461+4143	TDT3148		18	0.4	78
Show		21505+4135	TDS1149		285	0.7	81
Show		21533+4144	J 3152		238	4.6	85
Show		21509+4419	HJ 1700		197	9.7	87
Show		21532+4141	DAM 241		311	8.0	87

WDS 21490+4254 : COMPONENTS

	A
B	pa=168.0° sep=0.38"

21490+4254 A

Componente originario normalizzato	AB		Coord arcsec 2000	214857.78+425414.9		Mag	10.51		PmRA	-36.00
PmDE	-98.0		Tycho2	3192-00124-1

Tycho2

Tycho2	3192-00124-1	Pflag		RAmdeg	327.24078022	DEmdeg	42.90408366
PmRA	-35.5	PmDE	-97.6	E RAmdeg	17	E DEmdeg	15
E pmRA	1.2	E pmDE	1.2	EpRAm	1988.56	EpDEm	1989.52
Num	5	Q RAmdeg	1.1	Q DEmdeg	0.5	Q pmRA	1.2
Q pmDE	0.5	BTmag	10.940	E BTmag	0.039	VTmag	9.849
E VTmag	0.023	Prox	916	TYC	T	HIP
CCDM		RAdeg	327.24089333	DEdeg	42.90430833	EpRA 1990	1.60
EpDE 1990	1.69	E RAdeg	18.4	E DEdeg	15.9	Posflg
Corr	0.2

21490+4254 B

Componente originario normalizzato	AB		Coord arcsec 2000	214857.79+425414.5		Mag	10.54		PmRA	-36.00
PmDE	-98.0		Calc delta mag	0.03		Calc coord	yes