20157+1457 BKO 550

20^h 15^m 42.90^s +14° 56' 59.3" P.A. 301.00 sep 3.8 mag 13.50,14.00

Coord 2000	20157+1457	Discov num	BKO 550	Comp		Coord arcsec 2000	20 15 42.90 +14 56 59.3
Date first	1998	Date last	2015	Obs	4
Pa first	297	Pa last	301	P.A. Now (θ)	301°
Sep first	3.9	Sep last	3.754	Sep. Now (ρ)	3.754"
Mag pri	13.50	Mag sec	14.00	delta mag (ΔM)	0.5	Spectral class
Pri motion ra	+018	Sec motion ra
Pri motion dec	-027	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Gaia DR2

1808248031251668608

WDS 20157+1457 BKO 550 : NOTES

discov_num	notes	refcode
BKO 550	Anon. 63.	Bko2009d

REFERENCES

refcode	metd	author	reference
Bko2009d	C u	Berko, E.	2009JDSO....5..189B
Bko2009d		JDSO 5, 189, 2009

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20157+1457	BKO 550		2008	1	299	3.9	13.50	14.00		N	201542.90+145659.3
20157+1457	BKO 550		2010	4	292	3.7	13.50	14.00		N	201542.90+145659.3
20157+1457	BKO 550		2015	4	301	3.8	13.50	14.00		N	201542.90+145659.3

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

WDS 20157+1457 BKO 550 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20157+1457 BKO 550 : MEASURES

No records found.

WDS 20157+1457 : VIRTUAL EYEPIECE

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WDS 20157+1457 : ALADIN DSS IMAGE @ 20^h 15^m 42.90^s +14° 56' 59.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20157+1457 BKO 550 : 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		20157+1457	BKO 550		301	3.8
Show		20158+1455	CHE 251		61	28.0	3
Show		20159+1457	BKO 554		145	5.8	3
Show		20155+1455	BKO 544		29	2.6	4
Show		20157+1453	CHE 250		145	20.7	4
Show		20155+1452	CHE 245	AB	286	17.9	5
Show		20155+1452	BKO 545	AC	1	6.7	5
Show		20154+1457	CHE 244		108	13.4	5
Show		20155+1502	SMA 114		310	5.0	7
Show		20162+1504	CHE 259		138	16.5	9
Show		20159+1505	BKO 553		111	5.2	9
Show		20164+1500	CHE 262		245	19.7	12
Show		20157+1508	CHE 249	AB	349	22.6	12
Show		20157+1508	BKO 549	AC	111	4.8	12
Show		20151+1450	BPM2077		45	67.3	12
Show		20157+1509	BKO 548		65	2.7	13
Show		20150+1504	CHE 240		179	28.4	13
Show		20158+1510	BKO 552		64	3.6	13
Show		20162+1507	CHE 258		230	16.0	14
Show		20160+1510	BKO 555		202	4.6	14
Show		20167+1459	BPM2086		286	62.5	15
Show		20146+1503	CHE 234		270	18.4	17
Show		20146+1452	CHE 235		29	11.6	17
Show		20145+1502	TOB 309		182	11.6	18
Show		20145+1503	CHE 232		333	9.5	19
Show		20169+1506	CHE 268	BC	354	28.4	20
Show		20169+1506	CHE 268	AB	213	10.2	20
Show		20169+1506	ABH 136	AD	281	39.7	20
Show		20169+1506	ABH 136	AE	231	74.0	20
Show		20169+1506	ABH 136	AF	217	52.4	20
Show		20169+1506	ABH 136	AG	212	51.0	20
Show		20169+1506	ABH 136	AH	190	55.4	20
Show		20169+1506	ABH 136	AI	181	67.9	20
Show		20169+1506	ABH 136	AJ	57	93.0	20
Show		20169+1506	ABH 136	AK	65	103.2	20
Show		20169+1506	ABH 136	AL	64	125.3	20
Show		20169+1506	CHE 268	AC	337	21.4	20
Show		20148+1441	CHE 239		55	28.9	21
Show		20143+1451	CHE 226		285	13.4	21
Show		20144+1505	BKO 541		136	5.9	22
Show		20148+1439	BPM2074		167	90.1	23
Show		20167+1513	CHE 265		68	20.8	23
Show		20143+1507	CHE 225	AB	212	7.6	23
Show		20143+1507	BKO 539	AC	276	4.5	23
Show		20157+1520	CHE 248		322	32.0	24
Show		20172+1446	BPM2088		343	73.4	24
Show		20142+1508	BKO 538		127	6.2	25
Show		20140+1503	CHE 222		339	17.1	25
Show		20160+1521	CHE 253		324	14.4	26
Show		20142+1442	CHE 224		338	23.6	26
Show		20173+1443	CHE 275		332	30.4	28

WDS 20157+1457 : COMPONENTS

	A
B	pa=301.9° sep=3.66"

20157+1457 A

Componente originario normalizzato	AB		Coord arcsec 2000	201542.90+145659.3		Mag	13.5		PmRA	18.00
PmDE	-27.0

20157+1457 B

Componente originario normalizzato	AB		Coord arcsec 2000	201542.69+145701.2		Mag	14		Calc delta mag	0.5
Calc coord	yes