20257+0304 BAL 2024

20^h 25^m 40.34^s +03° 03' 40.9" P.A. 70.00 sep 16.1 mag 12.00,12.51

Coord 2000	20257+0304	Discov num	BAL2024	Comp		Coord arcsec 2000	20 25 40.34 +03 03 40.9
Date first	1909	Date last	2015	Obs	9
Pa first	70	Pa last	69.9	P.A. Now (θ)	69.9°
Sep first	15.1	Sep last	16.066	Sep. Now (ρ)	16.066"
Mag pri	12.00	Mag sec	12.51	delta mag (ΔM)	0.51	Spectral class
Pri motion ra	-007	Sec motion ra	+002
Pri motion dec	-008	Sec motion dec	-008
Notes	N (See Notes)

rPM=0.847

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Tycho2

0501-02405-1

Gaia DR2

4244729273995863936

WDS 20257+0304 BAL 2024 : NOTES

discov_num	notes	refcode
BAL2024	Due to a typographical error, this pair was previously listed as
	22058+0313.

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
20257+0304	BAL2024		2000	3	70	16.0	12.00	12.51		N D	202540.34+030340.9
20257+0304	BAL2024		2010	5	70	16.1	12.00	12.51		N	202540.34+030340.9
20257+0304	BAL2024		2015	6	70	16.1	12.00	12.51		N	202540.34+030340.9

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

WDS 20257+0304 BAL 2024 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20257+0304 BAL 2024 : MEASURES

No records found.

WDS 20257+0304 : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 20257+0304 : ALADIN DSS IMAGE @ 20^h 25^m 40.34^s +03° 03' 40.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20257+0304 BAL 2024 : 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		20257+0304	BAL2024		70	16.1
Show		20247+0302	J 1342		333	2.4	14
Show		20274+0317	BAL2025		94	10.2	30
Show		20251+0233	BAL2023		330	7.4	32
Show		20278+0311	HJ 917		37	12.8	34
Show		20251+0225	LDS4841		246	44.6	40
Show		20253+0355	UC 4175		87	20.7	52
Show		20291+0325	HJ 2968		50	15.3	57
Show		20221+0331	UC 4158		218	20.6	61
Show		20283+0351	BAL2533		256	19.0	61
Show		20294+0330	HJ 2970		180	12.0	62
Show		20286+0351	HJ 2967		131	7.1	65
Show		20213+0250	HLD 158		41	1.2	67
Show		20263+0156	BAL1557		211	6.4	69
Show		20212+0249	TOK 730		146	0.2	69
Show		20267+0155	J 155	BC	164	3.3	70
Show		20302+0321	DOO 87		33	11.9	70
Show		20267+0155	J 155	AB	348	53.1	71
Show		20298+0227	BAL2027		171	4.2	71
Show		20214+0336	BAL2532	AB	271	5.3	72
Show		20214+0336	BAL2532	AC	22	7.3	72
Show		20307+0311	BAL2029		141	7.5	77
Show		20225+0155	HJ 2955		246	14.1	80
Show		20228+0156	TDT2221		260	0.7	81
Show		20266+0143	BAL1558		9	18.3	83
Show		20306+0224	BAL2028		196	9.5	85
Show		20200+0308	HJ 913		144	9.6	86
Show		20199+0254	TDT2175		164	1.8	87
Show		20281+0140	BAL1560		3	6.6	92
Show		20253+0133	BAL1556		22	6.6	92
Show		20310+0211	J 561		176	4.3	95
Show		20302+0156	BAL1562		308	9.0	96
Show		20309+0400	BAL2538		202	10.8	97
Show		20321+0251	BAL2030		286	10.8	97
Show		20188+0305	UC 4144		347	30.8	103
Show		20291+0135	GWP2956	AB	250	16.5	103
Show		20291+0135	GWP2957	AC	258	172.4	103
Show		20202+2000	KPP 879	AB	332	7.4	104
Show		20321+0330	J 2573		151	4.0	105
Show		20285+0443	J 3220		181	3.9	106
Show		20203+0412	UC 4150		280	19.5	106
Show		20293+0132	BAL1561		8	15.8	107
Show		20253+0453	KPP4195	AB	16	11.7	110
Show		20227+0119	BAL1555		140	16.6	114
Show		20246+0104	STF2677	AB	30	31.2	121
Show		20246+0104	STF2677	AC	13	16.2	121
Show		20193+0418	GWP2938		333	50.7	121
Show		20275+0107	J 560		188	4.2	122
Show		20258+0058	SKF 927		230	65.9	126
Show		20238+0506	J 556		187	2.9	127
Show		20330+0201	TDT2361		37	0.5	127

WDS 20257+0304 : COMPONENTS

	A
B	pa=69.9° sep=16.05"

20257+0304 A

Componente originario normalizzato	AB		Coord arcsec 2000	202540.34+030340.9		Mag	12		PmRA	-7.00
PmDE	-8.0

20257+0304 B

Componente originario normalizzato	AB		Coord arcsec 2000	202541.35+030346.4		Mag	12.51		PmRA	2.00
PmDE	-8.0		Tycho2	0501-02405-1		Calc delta mag	0.51		Calc coord	yes

Tycho2

Tycho2	0501-02405-1	Pflag		RAmdeg	306.42229864	DEmdeg	3.06289044
PmRA	5.4	PmDE	-9.7	E RAmdeg	76	E DEmdeg	63
E pmRA	2.6	E pmDE	2.6	EpRAm	1975.90	EpDEm	1976.09
Num	3	Q RAmdeg	1.2	Q DEmdeg	2.5	Q pmRA	1.2
Q pmDE	2.5	BTmag	12.802	E BTmag	0.258	VTmag	12.505
E VTmag	0.239	Prox	999	TYC		HIP
CCDM		RAdeg	306.42226917	DEdeg	3.06298333	EpRA 1990	1.59
EpDE 1990	1.30	E RAdeg	99.5	E DEdeg	123.4	Posflg
Corr	-0.3