20506+0453 BAL 2974

20^h 50^m 34.09^s +04° 52' 06.9" P.A. 42.00 sep 3.7 mag 11.00,11.90

Coord 2000	20506+0453	Discov num	BAL2974	Comp		Coord arcsec 2000	20 50 34.09 +04 52 06.9
Date first	1992	Date last	2015	Obs	4
Pa first	48	Pa last	41.8	P.A. Now (θ)	41.8°
Sep first	3.9	Sep last	3.66	Sep. Now (ρ)	3.66"
Mag pri	11.00	Mag sec	11.90	delta mag (ΔM)	0.9	Spectral class
Pri motion ra	-017	Sec motion ra
Pri motion dec	-022	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Gaia DR2

1734829276170861440

WDS 20506+0453 BAL 2974 : 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
20506+0453	BAL2974		2000	2	43	3.9	11.00	11.90		D	205034.09+045206.9
20506+0453	BAL2974		2015	4	42	3.7	11.00	11.90			205034.09+045206.9

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WDS 20506+0453 BAL 2974 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20506+0453 BAL 2974 : MEASURES

No records found.

WDS 20506+0453 : VIRTUAL EYEPIECE

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WDS 20506+0453 : ALADIN DSS IMAGE @ 20^h 50^m 34.09^s +04° 52' 06.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20506+0453 BAL 2974 : 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		20506+0453	BAL2974		42	3.7
Show		20492+0502	HDS2967		190	0.4	23
Show		20516+0431	KPP1501		50	11.3	27
Show		20488+0512	J 2321	AB	151	6.6	33
Show		20488+0512	OSO 135	AC	158	16.6	33
Show		20511+0526	GCB 59		238	10.1	34
Show		20514+0524	TOB 313		130	20.8	35
Show		20526+0517	GCB 75		101	3.3	40
Show		20500+0533	STTA210	BC	222	12.4	41
Show		20500+0533	STTA210	AB	127	78.2	42
Show		20484+0426	AG 267		260	6.1	42
Show		20530+0427	TDT2603		281	1.7	45
Show		20527+0527	J 572		138	3.4	47
Show		20525+0416	TDT2595		359	0.7	47
Show		20496+0538	GWP3002		247	57.2	49
Show		20529+0529	GCB 60		152	6.5	49
Show		20473+0426	UC 4288		79	48.6	56
Show		20484+0407	BAL2546		40	9.6	56
Show		20519+0544	A 613		324	0.7	57
Show		20513+0353	GWP3006		117	24.4	61
Show		20533+0551	UC 4318		168	33.0	73
Show		20458+0445	BAL2971		21	17.1	73
Show		20478+0555	TDT2543		263	0.6	76
Show		20457+0430	A 2285	AB	222	7.7	76
Show		20457+0430	A 2285	AC	116	33.4	76
Show		20541+0357	HJ 3005		300	30.5	77
Show		20557+0432	STF2735		282	2.0	79
Show		20478+0600	BU 65		200	1.5	80
Show		20559+0435	UC 4332		60	52.9	83
Show		20529+0337	BAL2547		220	8.5	84
Show		20537+0336	BAL2548		258	7.5	90
Show		20466+0344	BAL2545		281	11.8	91
Show		20511+0623	STF2730		333	3.3	92
Show		20564+0422	CVR 877		125	26.3	92
Show		20561+0535	TDT2642		77	0.6	94
Show		20540+0614	TDT2616		100	0.4	97
Show		20460+0344	BAL2544		14	16.7	97
Show		20455+0553	HDS2954		298	1.0	98
Show		20452+0352	UC 4280		255	36.1	100
Show		20539+0620	TDS1107		110	1.6	102
Show		20459+0607	TDT2523		80	1.7	103
Show		20533+0627	TDT2607		281	0.6	104
Show		20525+0310	GWP3009		237	76.6	106
Show		20464+0618	TDT2533		230	0.7	107
Show		20528+0311	HLD 43		9	2.2	107
Show		20543+0321	BAL2039		28	14.7	107
Show		20582+0447	AG 268		287	12.5	115
Show		20580+0420	UC 4346		205	22.4	116
Show		20551+0314	UC 4324		290	9.9	120
Show		20552+0314	BAL2040		68	8.4	120
Show		20535+0300	HEI 819		135	0.2	121

WDS 20506+0453 : COMPONENTS

	A
B	pa=41.7° sep=3.65"

20506+0453 A

Componente originario normalizzato	AB		Coord arcsec 2000	205034.09+045206.9		Mag	11		PmRA	-17.00
PmDE	-22.0

20506+0453 B

Componente originario normalizzato	AB		Coord arcsec 2000	205034.25+045209.6		Mag	11.9		Calc delta mag	0.9
Calc coord	yes