20045-2342 BWL 54 AB

20^h 04^m 30.78^s -23° 42' 01.9" P.A. 261.00 sep 2.3 mag 7.70,17.70 Sp M4.5

Coord 2000	20045-2342	Discov num	BWL 54	Comp	AB	Coord arcsec 2000	20 04 30.78 -23 42 01.9
Date first	2011	Date last	2012	Obs	2
Pa first	252	Pa last	260.7	P.A. Now (θ)	260.7°
Sep first	2.3	Sep last	2.34	Sep. Now (ρ)	2.34"
Mag pri	7.70	Mag sec	17.70	delta mag (ΔM)	10	Spectral class	M4.5 (red)
Pri motion ra	+123	Sec motion ra
Pri motion dec	-339	Sec motion dec
Notes	U K (Proper motion indicates non-physical, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

This double is not physical.

20045-2342 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 04 31 -23 42 02	BWL 54 AB	2012	2	261	2.3	7.70	17.70	10.00		<===
Show			20 04 31 -23 42 02	BWL 54 AC	2012	2	0	6.4	7.70	18.10	10.40

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Sagittarius

WDS 20045-2342 BWL 54 AB : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bwl2012a	Ac j	Bowler, B.P., Liu, M.C., Shkolnik, E.L., Dupuy, T.J., Cieza, L.A., Kraus, A.L., &	2012ApJ...753..142B
Bwl2012a	+Xr	Tamura, M.
Bwl2012a	+E2	ApJ 753, 142, 2012
Bwl2012b	A j	Bowler, B.P., Liu, M.C., Shkolnik, E.L., & Tamura, M.	2012ApJ...756...69B
Bwl2012b		ApJ 756, 69, 2012
Bwl2013	A j	Bowler, B.P., Liu, M.C., Shkolnik, E.L., & Dupuy, T.J.	2013ApJ...774...55B
Bwl2013	+Al	ApJ 774, 55, 2013
Bwl2014	A j	Bowler, B.P., Liu, M.C., Kraus, A.L., & Mann, A.W.	2014ApJ...784...65B
Bwl2014		ApJ 784, 65, 2014
Bwl2015	Ac j	Bowler, B.P., Liu, M.C., Shkolnik, E.L., & Tamura, M.	2015ApJS..216....7B
Bwl2015		ApJS 216, 7, 2015
Bwl2015b	A j	Bowler, B.P., Shkolnik, E.L., Liu, M.C., Schlieder, J.E., Mann, A.W., Dupuy, T.J.,	2015ApJ...806...62B
Bwl2015b	+Ag	Hinkley, S., Crepp, J., Johnson, J., Howard, A., Flagg, L., Weinberger, A., et al.
Bwl2015b	+C+	ApJ 806, 62, 2015
Bwl2018	A j	Bowler, B.P., Dupuy, T.J., Endl, M., Cochran, W.D., MacQueen, P.J., Fulton, B.J.,	2018AJ....155..159B
Bwl2018		Petigura, E.A., Howard, A.W., Hirsch, L., Kratter, K.M., Crepp, J.R., Biller, B.A.,
Bwl2018		Johnson, M.C. & Wittenmyer, R.A.
Bwl2022b	A j	Sepulveda, A.G. & Bowler, B.P.	2022AJ....163...52S
Bwl2022b		AJ 163, 52, 2021

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20045-2342	BWL 54	AB	2012	2	261	2.3	7.70	17.70	M4.5	U K	200430.78-234201.9

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

WDS 20045-2342 BWL 54 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20045-2342 BWL 54 AB : MEASURES

No records found.

WDS 20045-2342 : 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 20045-2342 : ALADIN DSS IMAGE @ 20^h 04^m 30.78^s -23° 42' 01.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20045-2342 BWL 54 AB : 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		20045-2342	BWL 54	AB	261	2.3
Show		20045-2342	BWL 54	AC		6.4
Show		20030-2314	B 464		231	0.5	35
Show		20059-2416	TDT1971		50	0.6	40
Show		20040-2421	RSS 538		107	11.5	40
Show		20073-2324	ARA2270		182	7.8	42
Show		20077-2324	TDT2004		237	0.4	47
Show		20061-2258	ARA2269		221	11.2	50
Show		20046-2247	TDT1953		253	0.4	56
Show		20008-2411	TOK 917	Aa,Ab	244	0.7	59
Show		20003-2357	SEE 400		25	1.0	60
Show		20084-2435	B 467		215	0.5	75
Show		20032-2229	BRT1558		113	4.1	75
Show		20059-2455	TDT1972		211	2.9	76
Show		20090-2434	TDT2024		87	0.6	81
Show		20088-2242	WHC 18		312	20.8	85
Show		20071-2509	TDT1993		73	0.5	94
Show		20105-2428	UC 4112		236	52.7	95
Show		20031-2207	TDT1937		131	1.1	98
Show		19587-2237	TDS1029		239	1.3	104
Show		20062-2159	UC 4084		284	44.4	106
Show		20000-2512	KPP3122		355	1.7	109
Show		20007-2204	KPP1108		355	8.8	112
Show		20097-2216	BRT1561		338	2.9	112
Show		20101-2512	OCC 121		-1	0.1	118
Show		19574-2448	OCC 169		-1	0.8	119
Show		19578-2507	TDT1881		29	1.6	125
Show		19589-2521	LDS4825		329	58.1	127
Show		20124-2237	RST3250		350	1.1	127
Show		19592-2155	LDS 697		315	41.7	130
Show		20139-2328	KPP 908		192	7.5	131
Show		20097-2532	B 468	AB	359	4.6	131
Show		19550-2352	WHC 17		104	11.9	132
Show		19549-2325	ARA2268		2	2.6	134
Show		20103-2147	PRB 8		201	999.9	141
Show		20023-2124	LDS4828		105	42.0	141
Show		19543-2356	HJ 2904	AB	34	45.8	141
Show		19543-2356	ALP 33	AC	108	41.6	141
Show		19543-2356	GAA 23	Aa,Ab	14	0.0	141
Show		19542-2339	ARA2267		197	12.0	142
Show		20113-2533	TDT2063		32	0.5	144
Show		19537-2327	UC 4047		224	54.9	150
Show		19562-2206	BRT1556		35	3.5	150
Show		19541-2430	B 455		265	2.4	151
Show		20035-2613	UC 4071		163	8.6	152
Show		20089-2122	BRT1560		138	4.5	153
Show		20156-2412	HLD 157		239	2.2	155
Show		19564-2531	UC 4056		215	47.0	156
Show		19578-2132	CRI 25	AB	3	10.3	161
Show		19578-2132	SKF 442	AC	333	3.8	161
Show		20068-2620	TDT1988		252	0.6	162

WDS 20045-2342 : COMPONENTS

	A	B
B	pa=259.9° sep=2.15"
C	pa=359.7° sep=6.43"	pa=17.0° sep=7.12"

20045-2342 A

Coord arcsec 2000	200430.78-234201.9		Mag	7.7		Spectral class	M4.5 (red)		PmRA	123.00
PmDE	-339.0

20045-2342 B

Coord arcsec 2000

200430.63-234202.3

Mag

17.7

Calc delta mag

Calc coord

yes

20045-2342 C

Coord arcsec 2000

200430.78-234155.5

Mag

18.1

Calc delta mag

10.4

Calc coord

yes