20458+0445 BAL 2971

20^h 45^m 43.17^s +04° 44' 59.5" P.A. 21.00 sep 17.1 mag 11.83,11.36

Coord 2000	20458+0445	Discov num	BAL2971	Comp		Coord arcsec 2000	20 45 43.17 +04 44 59.5
Date first	1910	Date last	2015	Obs	10
Pa first	31	Pa last	21.4	P.A. Now (θ)	21.4°
Sep first	18.7	Sep last	17.094	Sep. Now (ρ)	17.094"
Mag pri	11.83	Mag sec	11.36	delta mag (ΔM)	0.47	Spectral class
Pri motion ra	+019	Sec motion ra	-009
Pri motion dec	-005	Sec motion dec	-006
Notes

rPM=1.426

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Tycho2

0520-01868-1

Gaia DR2

1735234029592016896

WDS 20458+0445 BAL 2971 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bal1924	Ma -	Baillaud, R.	1924JO......7..117B
Bal1924		J. Obs. 7, 117, 1924
Bal1925	Ma -	Baillaud, R.	1925JO......8...53B
Bal1925		J. Obs. 8, 53, 1925
Bal1925b	Ma j	Baillaud, R.	1925JO......8...56B
Bal1925b		J. Obs. 8, 56, 1925
Bal1926	Ma -	Baillaud, R.	1926JO......9..129P
Bal1926		J. Obs. 9, 129, 1926
Bal1937A	Ma -	Baillaud, R.	1937AnLei..18....1S
Bal1937A		cited by Strand (Ann. Sterrew. Leiden 18, 1937)
Bal1944	C -	Baillaud, R.	1944AnBes...3...33B
Bal1944	+Pa	Ann. Obs. Besancon New Ser. 3, 33, 1943
Bal1944	+Po

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20458+0445	BAL2971		2000	3	23	17.1	11.83	11.36		D	204543.17+044459.5
20458+0445	BAL2971		2013	5	22	17.0	11.83	11.36			204543.17+044459.5
20458+0445	BAL2971		2015	7	21	17.1	11.83	11.36			204543.17+044459.5

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

WDS 20458+0445 BAL 2971 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20458+0445 BAL 2971 : MEASURES

No records found.

WDS 20458+0445 : VIRTUAL EYEPIECE

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WDS 20458+0445 : ALADIN DSS IMAGE @ 20^h 45^m 43.17^s +04° 44' 59.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20458+0445 BAL 2971 : 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		20458+0445	BAL2971		21	17.1
Show		20457+0430	A 2285	AB	222	7.7	15
Show		20457+0430	A 2285	AC	116	33.4	15
Show		20473+0426	UC 4288		79	48.6	31
Show		20484+0426	AG 267		260	6.1	45
Show		20452+0352	UC 4280		255	36.1	54
Show		20488+0512	J 2321	AB	151	6.6	54
Show		20488+0512	OSO 135	AC	158	16.6	54
Show		20484+0407	BAL2546		40	9.6	55
Show		20492+0502	HDS2967		190	0.4	55
Show		20460+0344	BAL2544		14	16.7	62
Show		20466+0344	BAL2545		281	11.8	63
Show		20455+0553	HDS2954		298	1.0	68
Show		20506+0453	BAL2974		42	3.7	73
Show		20478+0555	TDT2543		263	0.6	77
Show		20496+0538	GWP3002		247	57.2	80
Show		20500+0533	STTA210	AB	127	78.2	80
Show		20500+0533	STTA210	BC	222	12.4	80
Show		20459+0607	TDT2523		80	1.7	82
Show		20478+0600	BU 65		200	1.5	82
Show		20511+0526	GCB 59		238	10.1	89
Show		20516+0431	KPP1501		50	11.3	90
Show		20396+0458	KUI 99	AB	111	0.3	93
Show		20396+0458	BAG 14	Aa,Ab	49	0.2	93
Show		20464+0618	TDT2533		230	0.7	94
Show		20514+0524	TOB 313		130	20.8	94
Show		20412+0338	BAL2543		33	6.5	96
Show		20403+0349	J 156		21	2.3	98
Show		20513+0353	GWP3006		117	24.4	99
Show		20525+0416	TDT2595		359	0.7	106
Show		20388+0512	GWP2976		324	6.5	108
Show		20526+0517	GCB 75		101	3.3	108
Show		20519+0544	A 613		324	0.7	110
Show		20530+0427	TDT2603		281	1.7	111
Show		20527+0527	J 572		138	3.4	112
Show		20424+0304	KPP3360		234	1.5	113
Show		20403+0326	STT 409	AB	84	16.8	113
Show		20403+0326	STT 409	AC	330	62.8	113
Show		20382+0459	BAL2970		35	12.5	114
Show		20529+0529	GCB 60		152	6.5	114
Show		20471+0253	TDT2536		352	1.6	114
Show		20383+0408	BAL2541		78	15.1	118
Show		20431+0253	AG 262		94	5.7	119
Show		20472+0247	UC 4286		114	31.3	121
Show		20419+0258	HJ 2988		142	23.2	122
Show		20442+0648	SKF2552	AB	60	17.6	126
Show		20442+0648	SKF2552	AC	31	23.1	126
Show		20442+0648	SKF2552	BC	343	11.4	126
Show		20511+0623	STF2730		333	3.3	127
Show		20529+0337	BAL2547		220	8.5	128
Show		20399+0620	RAO 617		334	2.5	129

WDS 20458+0445 : COMPONENTS

	A
B	pa=21.3° sep=17.09"

20458+0445 A

Componente originario normalizzato	AB		Coord arcsec 2000	204543.17+044459.5		Mag	11.83		PmRA	19.00
PmDE	-5.0		Tycho2	0520-01868-1

Tycho2

Tycho2	0520-01868-1	Pflag		RAmdeg	311.42986569	DEmdeg	4.74986330
PmRA	24.2	PmDE	-7.0	E RAmdeg	66	E DEmdeg	85
E pmRA	2.1	E pmDE	2.3	EpRAm	1977.92	EpDEm	1965.88
Num	3	Q RAmdeg	2.0	Q DEmdeg	0.4	Q pmRA	2.0
Q pmDE	0.3	BTmag	12.604	E BTmag	0.229	VTmag	11.834
E VTmag	0.167	Prox	175	TYC		HIP
CCDM		RAdeg	311.42980944	DEdeg	4.74988028	EpRA 1990	1.75
EpDE 1990	1.32	E RAdeg	71.5	E DEdeg	103.3	Posflg
Corr	-0.2

20458+0445 B

Componente originario normalizzato	AB		Coord arcsec 2000	204543.59+044515.4		Mag	11.36		PmRA	-9.00
PmDE	-6.0		Tycho2	0520-01901-1		Calc delta mag	0.47		Calc coord	yes

Tycho2

Tycho2	0520-01901-1	Pflag		RAmdeg	311.43166924	DEmdeg	4.75432978
PmRA	-12.1	PmDE	-6.9	E RAmdeg	59	E DEmdeg	80
E pmRA	2.5	E pmDE	2.6	EpRAm	1983.97	EpDEm	1976.18
Num	2	Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	13.036	E BTmag	0.303	VTmag	11.358
E VTmag	0.099	Prox	175	TYC		HIP
CCDM		RAdeg	311.43169694	DEdeg	4.75434639	EpRA 1990	1.76
EpDE 1990	1.31	E RAdeg	61.6	E DEdeg	88.9	Posflg
Corr	-0.1