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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18457+3942 BU 51 BC

18^h 45^m 39.17^s +39° 40' 45.9" P.A. 297.00 sep 6.0 mag 11.95,12.90

Coord 2000	18457+3942	Discov num	BU 51	Comp	BC	Coord arcsec 2000	18 45 39.17 +39 40 45.9
Date first	1870	Date last	2015	Obs	17
Pa first	280	Pa last	296.7	P.A. Now (θ)	296.7°
Sep first	2.0	Sep last	6.02	Sep. Now (ρ)	6.02"
Mag pri	11.95	Mag sec	12.90	delta mag (ΔM)	0.95	Spectral class
Pri motion ra	-003	Sec motion ra	-016
Pri motion dec	+004	Sec motion dec	+006
Notes

rPM=0.77

Nature of this double is uncertain.

18457+3942 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			18 45 40 +39 41 60	BU 51 AB	2015	19	185	74.2	9.00	11.95	2.95
Show			18 45 39 +39 40 46	BU 51 BC	2015	17	297	6.0	11.95	12.90	0.95		<===
Show			18 45 39 +39 40 46	FYM 51 BD	2015	7	344	34.6	11.95	15.60	3.65

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Lyra

Tycho2

3122-01499-1

Gaia DR2

2098229104788232192

WDS 18457+3942 BU 51 BC : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bu_1873a	Ma -	Burnham, S.W. (BU 1 - 81)	1873MNRAS..33..351B
Bu_1873a		MNRAS 33, 351, 1873
Bu_1873b	Ma -	Burnham, S.W. (BU 82 - 106)	1873MNRAS..33..437B
Bu_1873b		MNRAS 33, 437, 1873
Bu_1873c	-	Burnham, S.W.	1873MNRAS..33..567B
Bu_1873c		MNRAS 33, 567, 1873
Bu_1873d	Ma -	Burnham, S.W. (BU 107 - 182)	1873MNRAS..34...59B
Bu_1873d		MNRAS 34, 59, 1873
Bu_1874a	Ma -	Burnham, S.W. (BU 183 - 229)	1874MNRAS..34..382B
Bu_1874a		MNRAS 34, 382, 1874
Bu_1874b	Ma -	Burnham, S.W. (BU 230 - 300)	1874MNRAS..35...31B
Bu_1874b		MNRAS 35, 31, 1874
Bu_1874c	-	Burnham, S.W.	1874MNRAS..34..370B
Bu_1874c		MNRAS 34, 370, 1874
Bu_1874d	Ma -	Burnham, S.W.	1874MNRAS..34..393B
Bu_1874d		MNRAS 34, 393, 1874
Bu_1874e	Ma -	Burnham, S.W.	1874MNRAS..35...28B
Bu_1874e		MNRAS 35, 28, 1874
Bu_1875	Ma -	Burnham, S.W. (BU 301 - 390)	1875AN.....86..337B
Bu_1875		AN 86, 337, 1875
Bu_1876	Ma -	Burnham, S.W. (BU 391 - 436)	1876AN.....88..225B
Bu_1876		AN 88, 225, 1876
Bu_1876b	-	Burnham, S.W.	1876MNRAS..36...99B
Bu_1876b		MNRAS 36, 99, 1876
Bu_1876c	-	Burnham, S.W.	1876MNRAS..36..331B
Bu_1876c		MNRAS 36, 331, 1876 (no new data)
Bu_1877	Ma -	Burnham, S.W. (BU 453 - 482)	1877MNRAS..38...78B
Bu_1877		MNRAS 38, 78, 1877
Bu_1878a	Ma -	Burnham, S.W.	1878MNRAS..38..408B
Bu_1878a		MNRAS 38, 408, 1878
Bu_1878b	-	Burnham, S.W.	1878MNRAS..38..476B
Bu_1878b		MNRAS 38, 476, 1878
Bu_1878c	-	Burnham, S.W.	1878MNRAS..38..478B
Bu_1878c		MNRAS 38, 478, 1878
Bu_1878d	Ma j	Burnham, S.W.	1878AN.....92..235B
Bu_1878d		AN 92, 235, 1878
Bu_1879	Ma j	Burnham, S.W.	1879MmRAS..44..141B
Bu_1879		MemRAS 44, 141, 1879
Bu_1879B	Ma -	Burnham, S.W.	1879Obs.....3...20G
Bu_1879B		cited by Gledhill (Obs 3, 20, 1879)
Bu_1879C	Ma -	Burnham, S.W.	1879Obs.....3..142G
Bu_1879C		cited by Gledhill (Obs 3, 142, 1879)
Bu_1879d	Ma -	Burnham, S.W.	1879Obs.....3...92B
Bu_1879d		Obs 3, 92, 1879
Bu_1879e	Ma -	Burnham, S.W.	1879MNRAS..40...99B
Bu_1879e		MNRAS 40, 99, 1879
Bu_1880A	Ma -	Burnham, S.W.	1880Obs.....3..508G
Bu_1880A		cited by Gledhill (Obs 3, 508, 1880)
Bu_1880C	Ma -	Burnham, S.W.	1880Obs.....3..314G
Bu_1880C		cited by Gledhill (Obs 3, 314, 1880)
Bu_1880D	Ma -	Burnham, S.W.	1880Obs.....3..352G
Bu_1880D		cited by Gledhill (Obs 3, 352, 1880)
Bu_1880e	Ma -	Burnham, S.W.	1880Obs.....3..408B
Bu_1880e		Obs 3, 408, 1880
Bu_1880f	Ma -	Burnham, S.W.	1880MNRAS..40..497B
Bu_1880f		MNRAS 40, 497, 1880
Bu_1880g	Ma -	Burnham, S.W.	1880MNRAS..41...33B
Bu_1880g		MNRAS 41, 33, 1880
Bu_1881	Ma j	Burnham, S.W.	1881Obs.....4...19G
Bu_1881		cited by Gledhill (Obs 4, 19, 1881)
Bu_1882a	Ma -	Burnham, S.W. (BU 776 - 863)	1882PWasO...1...91B
Bu_1882a		Pub. Washburn Obs. 1, 91, 1882
Bu_1882b	Ma -	Burnham, S.W.	1882PWasO...1..113B
Bu_1882b		Pub. Washburn Obs. 1, 113, 1882
Bu_1883	Ma j	Burnham, S.W. (BU 864 - 1025)	1883MmRAS..47..167B
Bu_1883		MemRAS 47, 167, 1883
Bu_1883b	Ma -	Burnham, S.W.	1883MNRAS..43..318B
Bu_1883b		MNRAS 43, 318, 1883
Bu_1884	Ma j	Burnham, S.W.	1884MNRAS..44..365H
Bu_1884		MNRAS 44, 365, 1884
Bu_1884b	Ma -	Burnham, S.W.	1884AN....110..133B
Bu_1884b		AN 110, 133, 1884
Bu_1884C	Ma -	Burnham, S.W.	1884AReg...22..216S
Bu_1884C		cited by Sadler (Astr. Register 22, 216, 1884)
Bu_1887	Ma -	Burnham, S.W. (BU 734 - 775)	1887PLicO...1...24B
Bu_1887		Pub. Lick Obs. 1, 24,45, 1887
Bu_1889a	Ma -	Burnham, S.W.	1889AN....122..159B
Bu_1889a		AN 122, 159, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889b	Ma -	Burnham, S.W. (BU 1026 - 1038)	1889AN....123....1B
Bu_1889b		AN 123, 1, 1889 (measures also in Bu_1894a)	1894PLicO...2..185B
Bu_1889c	Ma -	Burnham, S.W.	1889AN....123...75B
Bu_1889c		AN 123, 75, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889d	Ma -	Burnham, S.W.	1889PASP....1...36B
Bu_1889d		PASP 1, 36, 1889 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1889e	Ma j	Burnham, S.W.	1889AN....121...63B
Bu_1889e		AN 121, 63, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889f	Ma j	Bunham, S.W.	1889MNRAS..49..418B
Bu_1889f		MNRAS 49, 418, 1889
Bu_1890a	Ma -	Burnham, S.W. (BU 1093 - 1154)	1889AN....124...49B
Bu_1890a		AN 124, 49, 1890 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1890b	Ma -	Burnham, S.W.	1890AN....125...41B
Bu_1890b		AN 125, 41, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1890c	Ma -	Burnham, S.W.	1890PASP....2..138B
Bu_1890c		PASP 2, 138, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1891a	orb -	Burnham, S.W.	1891SidM...10..273B
Bu_1891a		Sidereal Messenger 10, 273, 1891
Bu_1891b	orb -	Burnham, S.W.	1891Obs....14..263B
Bu_1891b		Observatory 14, 263, 1891
Bu_1891c	Ma j	Burnham, S.W.	1891AN....127..289B
Bu_1891c		AN 127, 289, 1891
Bu_1892	Ma -	Burnham, S.W. (BU 1225 - 1266)	1892AN....130..257B
Bu_1892		AN 130, 257, 1892 (measures also in Bu_1894e)	1894PLicO...2..221B
Bu_1892b	Ma -	Burnham, S.W.	1892AN....130...77B
Bu_1892b		AN 130, 77, 1892
Bu_1893a	Ma -	Burnham, S.W.	1893AN....131..329B
Bu_1893a		AN 131, 329, 1893 (most measures also in Bu_1894)	1894PLicO...2.....B
Bu_1893b	orb -	Burnham, S.W.	1893MNRAS..53..478B
Bu_1893b		MNRAS 53, 478, 1893
Bu_1893c	orb -	Burnham, S.W.	1893MNRAS..54..119B
Bu_1893c		MNRAS 54, 119, 1893
Bu_1893d	orb -	Burnham, S.W.	1893AstAp..12..494B
Bu_1893d		AstAp 12, 494, 1893
Bu_1893e	orb -	Burnham, S.W.	1893AstAp..12..585B
Bu_1893e		AstAp 12, 585, 1893
Bu_1893f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1893MNRAS..53..273B
Bu_1893f		MNRAS 53, 273, 1893 (most measures also in Bu_1893a)	1893AN....131..329B
Bu_1893g	orb -	Burnham, S.W.	1893MNRAS..53..482B
Bu_1893g		MNRAS 53, 482, 1893
Bu_1894	Ma j	Burnham, S.W.	1894PLicO...2....3B
Bu_1894		Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a)	1893AN....131..329B
Bu_1894a	Ma j	Burnham, S.W. (BU 1026 - 1038)	1894PLicO...2..185B
Bu_1894a		Pub. Lick Obs. 2, 185, 1894
Bu_1894b	Ma j	Burnham, S.W. (BU 1039 - 1092)	1894PLicO...2..188B
Bu_1894b		Pub. Lick Obs. 2, 188, 1894
Bu_1894c	Ma -	Burnham, S.W. (BU 1093 - 1154)	1894PLicO...2..197B
Bu_1894c		Pub. Lick Obs. 2, 197, 1894
Bu_1894d	Ma -	Burnham, S.W. (BU 1155 - 1224)	1894PLicO...2..206B
Bu_1894d		Pub. Lick Obs. 2, 206, 1894
Bu_1894e	Ma -	Burnham, S.W. (BU 1225 - 1266)	1894PLicO...2..221B
Bu_1894e		Pub. Lick Obs. 2, 221, 1894
Bu_1894f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1894PLicO...2..229B
Bu_1894f		Pub. Lick Obs. 2, 229, 1894 (all measures also in Bu_1893f)	1893MNRAS..53..273B
Bu_1894g	Ma -	Burnham, S.W.	1894PLicO...2..159B
Bu_1894g		Pub. Lick Obs. 2, 159, 1894
Bu_1898	orb -	Burnham, S.W.	1898MNRAS..59...59B
Bu_1898		MNRAS 58, 59, 1898
Bu_1900	Ma -	Burnham, S.W.	1900PYerO...1....1B
Bu_1900		Pub. Yerkes Obs. 1, 1, 1900
Bu_1902A	Ma j	Burnham, S.W.	1902AN....158..241E
Bu_1902A		cited by Espin (AN 158, 241, 1902)
Bu_1903	Ma -	Burnham, S.W.	1903PYerO...2....1B
Bu_1903		Pub. Yerkes Obs. 2, 1, 1903
Bu_1906	Ma j	Burnham, S.W.	1906QB821.B972.....
Bu_1906	+M	Burnham Double Star Cat., 1906
Bu_1906B	Ma -	Burnham, S.W.	1906MmRAS..56....1L
Bu_1906B	+orb	cited by Lewis (MemRAS 56, 1, 1906)
Bu_1907	Ma -	Burnham, S.W.	1907AN....176..129B
Bu_1907		AN 176, 129, 1907 (most data in Bu_1913)	1913QB811.B8.......
Bu_1908	Ma -	Burnham, S.W.	1908MNRAS..68..517B
Bu_1908		MNRAS 68, 517, 1908
Bu_1908A	Ma -	Burnham, S.W.	1908MNRAS..68..465B
Bu_1908A		cited by Barnard (MNRAS 68, 465, 1908)
Bu_1909	Ma -	Burnham, S.W.	1909AN....180...65B
Bu_1909		AN 180, 65, 1909 (most data in Bu_1913)	1913QB811.B8.......
Bu_1909b	Ma j	Burnham, S.W.	1909AN....182..133B
Bu_1909b		AN 182, 133, 1909
Bu_1910	Ma -	Burnham, S.W.	...................
Bu_1910		Journal Astronomique 1, no. 11, 81, 1910
Bu_1910b	Ma -	Burnham, S.W.	1910AN....185..145B
Bu_1910b		AN 185, 145, 1910 (most data in Bu_1913)	1913QB811.B8.......
Bu_1911	-	Burnham, S.W.	1911MNRAS..72..156J
Bu_1911		MNRAS 72, 156, 1911
Bu_1911b	Ma j	Burnham, S.W.	1911AN....189..385B
Bu_1911b		AN 189, 385, 1911
Bu_1913	Ma j	Burnham, S.W.	1913QB811.B8.......
Bu_1913	+Pa	Carnegie Inst. Wash. #168, 1913
Bu_1913	+T
Bu_1918	Ma j	Burnham, S.W.	1918AJ.....31..141B
Bu_1918		AJ 31, 141, 1918
Bu_1923A	Ma -	Burnham, S.W.	1923MNRAS..83..154E
Bu_1923A		cited by Espin (MNRAS 83, 154, 1923)
Bu_1927A	Ma -	Burnham, S.W.	1927sdsc.book......
Bu_1927A		cited in SDS (Southern Double Star Cat.), 1927
Bu_1932A	Ma -	Burnham, S.W.	1932QB821.A43......
Bu_1932A		cited in ADS (Aitken Double Star Cat.), 1932
Bu_1963A	Ma -	Burnham, S.W.	1963icvd.book.....J
Bu_1963A		cited in IDS (Lick Index Cat.), 1963
Bu_2002A	Ma -	Burnham, S.W.	2002yCat.1275....0D
Bu_2002A		cited in CCDM
FyM2013	C j	Fay, M.	2013OED....10...38F
FyM2013		El Observador de Estrellas Dobles, Issue #10, 38, 2013
FyM2013b	C j	Fay, M.	.
FyM2013b		Il Bollettino Delle Stelle Doppie 5, 10, 2013
FyM2013c	C j	Fay, M.	.
FyM2013c		Il Bollettino Delle Stelle Doppie 6, 40, 2013
FyM2013d	C j	Fay, M.	.
FyM2013d		Il Bollettino Delle Stelle Doppie 6, 46, 2013
FyM2014	C j	Fay, M.	.
FyM2014		Il Bollettino Delle Stelle Doppie 9, 36, 2014
FyM2014		(Italian translation on page 21 of the same publication)
FyM2014b	C -	Fay, M.	.
FyM2014b		private communication
FyM2014c	C j	Fay, M.	2014OED....13...19F
FyM2014c		El Observador de Estrellas Dobles, Issue #13, 19, 2014
FyM2015a	C j	Fay, M.	2015OED....14...48F
FyM2015a		El Observador de Estrellas Dobles, Issue #14, 48, 2015
FyM2015b	C j	Fay, M.	2015OED....15...48F
FyM2015b		El Observador de Estrellas Dobles, Issue #15, 48, 2015
FyM2016a	C -	Fay, M.	2016OED....16...94F
FyM2016a		El Observador de Estrellas Dobles, Issue #16, 94, 2016
FyM2016b	C j	Fay, M.	2016OED....16..132F
FyM2016b		El Observador de Estrellas Dobles, Issue #16, 132, 2016
FyM2016c	C j	Fay, M.	2016OED....17...14F
FyM2016c		El Observador de Estrellas Dobles, Issue #17, 14, 2016
FyM2017a	C -	Fay, M.	.
FyM2017a		Il Bollettino Delle Stelle Doppie 20, 51, 2017
FyM2017a		(Italian translation on page 29 of the same publication)
FyM2017b	C j	Fay, M.	2017OED....19...71F
FyM2017b		El Observador de Estrellas Dobles, Issue #19, 71, 2017

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18457+3942	BU 51	BC	2002	8	297	6.0	11.95	12.90		D	184539.17+394045.9
18457+3942	BU 51	BC	2013	11	295	6.1	11.95	12.90			184539.17+394045.9
18457+3942	BU 51	BC	2015	13	297	6.0	11.95	12.90			184539.17+394045.9

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

WDS 18457+3942 BU 51 BC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18457+3942 BU 51 BC : MEASURES

No records found.

WDS 18457+3942 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 18457+3942 : ALADIN DSS IMAGE @ 18^h 45^m 39.17^s +39° 40' 45.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18457+3942 BU 51 BC : 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		18457+3942	FYM 51	BD	344	34.6
Show		18457+3942	BU 51	BC	297	6.0
Show		18457+3942	BU 51	AB	185	74.2	2
Show		18443+3940	STF2382	AB	345	2.2	16
Show	Double Double	18443+3940	STFA 37	AB,CD	172	209.4	16
Show		18443+3940	STFA 37	AD	172	208.2	16
Show		18443+3940	STFA 37	AI	137	150.4	16
Show		18443+3940	STFA 37	BC	172	210.9	16
Show		18443+3940	STFA 37	BD	171	212.5	16
Show		18443+3940	STFA 37	BI	137	151.3	16
Show		18443+3940	STFA 37	DI	37	121.6	16
Show		18443+3940	CHR 77	Ca,Cb	225	0.1	16
Show		18443+3940	SHJ 277	CD,F		93.3	16
Show		18443+3940	SHJ 277	CD,G	293	75.1	16
Show		18443+3940	SHJ 277	CD,H	313	95.7	16
Show		18443+3940	STF2383	CD	75	2.3	16
Show		18443+3940	STF2383	CE	334	63.2	16
Show		18443+3940	STFA 37	CI	37	120.4	16
Show		18443+3940	SHJ 277	EF	37	45.4	16
Show		18443+3940	SHJ 277	EG	236	50.0	16
Show		18443+3940	STFA 37	EI	68	108.9	16
Show		18443+3940	SHJ 277	GH	358	35.8	17
Show		18465+3958	LDS4799		70	10.3	20
Show		18453+4005	ROE 50	CF	99	9.9	25
Show		18453+4005	ROE 50	AB	282	4.7	25
Show		18453+4005	ROE 50	AC	120	26.2	25
Show		18453+4005	ROE 50	AD	253	96.6	25
Show		18453+4005	ROE 50	AE	196	93.6	25
Show		18453+4005	BKO 53	AG	156	51.7	25
Show		18453+4005	BKO 53	AH	301	35.7	25
Show		18453+4005	ROE 50	AF	114	35.7	25
Show		18452+3914	STF2392	BC	169	26.2	28
Show		18452+3914	STF2392	AB	314	2.8	28
Show		18452+3914	STF2392	AC	173	23.8	28
Show		18478+3954	GRV 240		43	15.6	29
Show		18481+3929	COU1609		202	0.8	31
Show		18483+3956	SLW1221		63	49.1	35
Show		18426+3937	HJ 1341		285	8.8	36
Show		18433+3918	BLL 35		192	60.8	36
Show		18453+3856	COU1608		230	1.1	46
Show		18436+4020	SLE 122		151	17.9	46
Show		18490+3914	COU1610		145	0.4	48
Show		18418+4001	LSC 83		266	0.1	49
Show		18483+4018	UC 3676		11	49.2	49
Show		18466+3853	ES 2021	AB	254	20.2	50
Show		18466+3853	ES 2021	AC	261	23.1	50
Show		18466+3853	ES 2021	BC	298	3.8	50
Show		18480+3858	ES 2572		66	6.3	51
Show		18501+4002	HU 1192		44	2.5	56
Show		18496+4020	UC 3687		160	11.5	60
Show		18507+3920	HDS2672		19	0.1	62

WDS 18457+3942 : COMPONENTS

	A	B	C
B	pa=185.4° sep=74.02"
C	pa=188.9° sep=71.85"	pa=303.2° sep=4.94"
D	pa=199.6° sep=43.06"	pa=347.2° sep=34.00"	pa=353.6° sep=30.63"

18457+3942 A

Coord arcsec 2000	184539.77+394159.6		Mag	9		Spectral class	M0 (red)		PmRA	-1.00
PmDE	-1.0		Tycho2	3122-01170-1		ADS	11668		DM	BD+39 3523

Tycho2

Tycho2	3122-01170-1	Pflag		RAmdeg	281.41572592	DEmdeg	39.69989551
PmRA	-2.1	PmDE	-1.2	E RAmdeg	11	E DEmdeg	11
E pmRA	1.3	E pmDE	1.3	EpRAm	1990.11	EpDEm	1990.10
Num	10	Q RAmdeg	0.6	Q DEmdeg	1.5	Q pmRA	0.6
Q pmDE	1.5	BTmag	11.141	E BTmag	0.051	VTmag	8.999
E VTmag	0.015	Prox	742	TYC	T	HIP
CCDM		RAdeg	281.41573194	DEdeg	39.69989806	EpRA 1990	1.67
EpDE 1990	1.65	E RAdeg	12.0	E DEdeg	11.9	Posflg
Corr	0.0

CCDM

Ccdm	18457+3942	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.24	DDEs	-0.7
R dRAs	10	Year		Theta		Rho
Obs	3	Vmag	9.3	Sp		PmNote	*
PmRA	8	PmDE	-8	Dm number	+39 3523	Cat1	BD
Name2	+39 1841	Cat2	AGK2/3	HD		M HD
ADS BDS	A11668	M ADS BDS		N IDS		IDS	18424N3936A
HIC

18457+3942 B

Coord arcsec 2000	184539.17+394045.9		Coord calc	184539.17+394045.9		Mag	11.95		PmRA	-3.00
PmDE	4.0		Tycho2	3122-01499-1		Calc delta mag	2.95

Tycho2

Tycho2	3122-01499-1	Pflag		RAmdeg	281.41320204	DEmdeg	39.67942301
PmRA	-10.2	PmDE	7.3	E RAmdeg	69	E DEmdeg	63
E pmRA	2.7	E pmDE	2.4	EpRAm	1976.92	EpDEm	1976.84
Num	4	Q RAmdeg	1.9	Q DEmdeg	1.0	Q pmRA	1.9
Q pmDE	1.0	BTmag	12.537	E BTmag	0.210	VTmag	11.952
E VTmag	0.177	Prox	742	TYC		HIP
CCDM		RAdeg	281.41338000	DEdeg	39.67936083	EpRA 1990	1.61
EpDE 1990	1.65	E RAdeg	178.2	E DEdeg	176.1	Posflg
Corr	0.0

CCDM

Ccdm	18457+3942	RComp		Comp	B	Note1
Note2		Discov num	BU 51	DRAs		DDEs
R dRAs		Year	1898	Theta	186	Rho	74.9
Obs	5	Vmag	10.5	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A11668	M ADS BDS		N IDS		IDS	18424N3936B
HIC

18457+3942 C

Coord arcsec 2000	184538.81+394048.6		Mag	12.9		PmRA	-16.00		PmDE	6.0
Calc delta mag	3.9		Calc coord	yes

CCDM

Ccdm	18457+3942	RComp	B	Comp	C	Note1
Note2		Discov num	BU 51	DRAs		DDEs
R dRAs		Year	1898	Theta	297	Rho	6.1
Obs	5	Vmag	11.5	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A11668	M ADS BDS		N IDS		IDS	18424N3936C
HIC

18457+3942 D

Coord arcsec 2000	184538.52+394119.0		Mag	15.6		PmRA	-6.00		PmDE	-12.0
Calc delta mag	6.6		Calc coord	yes