20307+1718 BPM 2178

20^h 30^m 43.56^s +17° 18' 29.8" P.A. 217.00 sep 110.0 mag 13.20,14.68

Coord 2000	20307+1718	Discov num	BPM2178	Comp		Coord arcsec 2000	20 30 43.56 +17 18 29.8
Date first	1995	Date last	2015	Obs	8
Pa first	217	Pa last	217.4	P.A. Now (θ)	217.4°
Sep first	110.0	Sep last	109.951	Sep. Now (ρ)	109.951"
Mag pri	13.20	Mag sec	14.68	delta mag (ΔM)	1.48	Spectral class
Pri motion ra	-011	Sec motion ra	-008
Pri motion dec	-014	Sec motion dec	+001
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.859

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Gaia DR2

1812019145672844288

WDS 20307+1718 BPM 2178 : NOTES

discov_num	notes	refcode
BPM2178	[PM2000] 2322413 + [PM2000] 2321986.	Gvr2010

REFERENCES

refcode	metd	author	reference
Gvr2010	Pa -	Gavras, P. Sinachopoulos, D., Le Campion, J.F., & Cucourant, C.	2010A&A...521A 4G
Gvr2010	+T	A&A 521, A4, 2010
Gvr2010		(Note: mean measures from AC2000.2, CdC2000, USNO-A2.0, Yellow Sky, and M2000
Gvr2010		catalogs, spanning years ~1900-2000)

DISCOVERER

idgroup	discov	author
1	BPM	Bordeaux PM2000 catalogue (main catalog: separation < 2')

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20307+1718	BPM2178		2000	2	217	110.0	13.20	14.68		NV	203043.56+171829.8
20307+1718	BPM2178		2001	3	217	110.0	13.20	14.68		NV	203043.56+171829.8
20307+1718	BPM2178		2010	4	217	109.8	13.20	14.68		NV	203043.56+171829.8
20307+1718	BPM2178		2015	5	217	110.0	13.20	14.68		NV	203043.56+171829.8

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WDS 20307+1718 BPM 2178 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20307+1718 BPM 2178 : MEASURES

No records found.

WDS 20307+1718 : VIRTUAL EYEPIECE

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WDS 20307+1718 : ALADIN DSS IMAGE @ 20^h 30^m 43.56^s +17° 18' 29.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20307+1718 BPM 2178 : 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		20307+1718	BPM2178		217	110.0	1
Show		20298+1712	J 510		248	4.9	16
Show		20292+1728	BRT2477		155	4.0	25
Show		20292+1735	BPMA249		155	287.6	28
Show		20311+1648	J 563	BC	215	5.1	31
Show		20311+1648	ROE 14	AB	262	7.0	31
Show		20284+1713	HJ 2969		170	6.0	35
Show		20332+1659	BPM2185		75	70.1	41
Show		20322+1754	GWP2966		75	121.0	41
Show		20319+1758	BPM2183		115	110.7	43
Show		20281+1654	HEI 180		166	1.1	46
Show		20338+1704	BPM2188		244	105.7	47
Show		20340+1659	BPM2190		300	100.0	51
Show		20329+1803	HJ 2977		317	20.1	54
Show		20270+1736	BPM2167		207	101.3	56
Show		20269+1727	BPM2164		20	110.5	56
Show		20345+1735	BPM2191		324	92.1	57
Show		20348+1726	COU 223	AB	161	0.4	59
Show		20348+1726	COU 223	AC	288	1.3	59
Show		20268+1656	HO 129		163	4.7	61
Show		20267+1701	BRT1342		90	5.8	62
Show		20266+1736	GWP2948		182	22.1	62
Show		20291+1622	BPM2172		155	50.8	62
Show		20269+1747	BPM2163		31	113.7	63
Show		20278+1805	HJL1103		82	126.5	63
Show		20294+1617	BPM2174		211	87.3	64
Show		20262+1721	BPM2158		251	115.1	65
Show		20267+1646	TVB 314		209	17.2	66
Show		20352+1659	BPM2199		210	60.3	67
Show		20276+1629	GWP2953		29	69.7	67
Show		20348+1644	BPM2196	BC	128	63.7	68
Show		20280+1624	BPM2170		207	80.4	68
Show		20263+1743	HJ 2962		103	13.4	68
Show		20348+1644	BPM2195	AB	302	71.3	69
Show		20305+1829	J 2313		137	6.2	71
Show		20352+1803	BPM2200		303	81.7	79
Show		20311+1600	BPM2181		57	94.1	79
Show		20364+1651	BPM2205		170	47.0	86
Show		20363+1636	J 3095		185	7.7	89
Show		20311+1548	A 1675		294	0.1	91
Show		20247+1747	BPMA247		40	194.2	91
Show		20371+1738	BPM2208		78	56.4	94
Show		20283+1846	HO 131	AB	334	3.4	95
Show		20283+1846	HO 131	AC	69	64.4	95
Show		20283+1846	HO 131	AD	97	76.9	95
Show		20268+1603	GWP2950		44	20.6	95
Show		20374+1735	BPM2211		234	109.1	98
Show		20306+1540	GRV 346		11	66.6	98
Show		20367+1807	GRV 362		81	22.8	99
Show		20377+1736	BPM2215		103	61.2	101
Show		20334+1544	BPM2186		75	53.0	103

WDS 20307+1718 : COMPONENTS

	A
B	pa=216.1° sep=108.14"

20307+1718 A

Componente originario normalizzato	AB		Coord arcsec 2000	203043.56+171829.8		Mag	13.2		PmRA	-11.00
PmDE	-14.0

20307+1718 B

Componente originario normalizzato	AB		Coord arcsec 2000	203039.11+171702.5		Mag	14.68		PmRA	-8.00
PmDE	1.0		Calc delta mag	1.48		Calc coord	yes