18273-2503 LDS 639

18^h 27^m 18.60^s -25° 04' 23.9" P.A. 353.00 sep 21.1 mag 11.65,12.93 Sp M0V:

Coord 2000	18273-2503	Discov num	LDS 639	Comp		Coord arcsec 2000	18 27 18.60 -25 04 23.9
Date first	1960	Date last	2016	Obs	9
Pa first	0	Pa last	353.3	P.A. Now (θ)	353.3°
Sep first	21.0	Sep last	21.132	Sep. Now (ρ)	21.132"
Mag pri	11.65	Mag sec	12.93	delta mag (ΔM)	1.28	Spectral class	M0V: (red)
Pri motion ra	-080	Sec motion ra	-077
Pri motion dec	-179	Sec motion dec	-185
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.033 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Sagittarius

Tycho2

6861-02384-1

Gaia DR2

4077007051576855296

WDS 18273-2503 LDS 639 : NOTES

discov_num	notes	refcode
LDS 639	LDS 640.
	NLTT 46491/46490	Chm2004

REFERENCES

refcode	metd	author	reference
Chm2004	E -	Chaname, J. & Gould, A.	2004ApJ...601..289C
Chm2004		ApJ 601, 289, 2004
Chm2004		(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004		versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004		identical to discovery observations - predominantly close pairs - were assumed
Chm2004		not new observations, so not included in WDS. Similar concerns when primary and
Chm2004		secondary magnitudes or proper motions were the same.)

DISCOVERER

idgroup	discov	author
1	LDS	Luyten p.m. catalog (from additional DD list)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18273-2503	LDS 639		2000	4	353	22.2	11.65	12.93	M0V:	N D	182718.60-250423.9
18273-2503	LDS 639		2010	8	181	21.1	11.65	12.93	M0V:	NV	182718.60-250423.9
18273-2503	LDS 639		2015	9	353	21.1	11.65	12.93	M0V:	NV	182718.60-250423.9
18273-2503	LDS 639		2016	9	353	21.1	11.65	12.93	M0V:	NV	182718.60-250423.9

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

WDS 18273-2503 LDS 639 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18273-2503 LDS 639 : MEASURES

No records found.

WDS 18273-2503 : VIRTUAL EYEPIECE

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

WDS 18273-2503 : ALADIN DSS IMAGE @ 18^h 27^m 18.60^s -25° 04' 23.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18273-2503 LDS 639 : 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		18273-2503	LDS 639		353	21.1
Show		18264-2509	J 1742		233	4.6	14
Show		18289-2503	H N 125	AB	107	2.5	23
Show	Kaus Borealis	18280-2525	WFC 208		184	82.5	23
Show		18292-2436	B 392		208	5.2	39
Show		18253-2434	RST4010		116	0.7	42
Show		18274-2420	KPP 412		199	4.8	44
Show		18289-2422	LEO 38		217	3.0	48
Show		18303-2533	B 394		197	0.2	50
Show		18266-2600	J 2213		90	6.5	57
Show		18265-2601	J 2212		302	5.3	57
Show		18229-2524	B 389		223	0.3	64
Show		18317-2541	OCC 264		-1	0.1	70
Show		18281-2349	ARA2231		250	12.0	76
Show		18294-2353	B 393		135	1.7	77
Show		18236-2610	HO 566		143	0.5	84
Show		18213-2433	RST4008		194	0.5	87
Show		18337-2502	VVV 57		162	8.0	87
Show		18290-2635	WNO 6		182	41.8	94
Show		18277-2638	BU 133		230	0.6	94
Show		18229-2352	ARA2230		346	18.4	95
Show		18280-2328	LEO 18		295	2.8	97
Show		18292-2640	B 391		65	0.2	100
Show		18281-2645	HDS2615	AB	186	0.3	102
Show		18281-2645	ARY 126	AC	135	54.1	102
Show		18216-2359	B 388		199	1.6	102
Show		18216-2358	ARA2318		122	8.5	102
Show		18210-2408	RST4007		121	0.2	103
Show		18306-2329	ARA2233		262	7.5	106
Show		18280-2651	I 1366		225	0.4	107
Show		18350-2441	J 1746		165	3.9	107
Show		18220-2344	ARA2229		246	13.5	108
Show		18322-2630	SKF2066		282	17.5	109
Show		18200-2417	RST3176		73	0.6	111
Show		18352-2427	J 1654		78	3.5	115
Show		18227-2328	BRT3067		29	3.3	115
Show		18305-2315	RST4013		264	1.3	118
Show		18325-2330	BRT1539		230	4.1	118
Show		18311-2315	DON 906		145	2.0	122
Show		18185-2535	J 1738		208	7.6	124
Show		18218-2327	DON 895		141	2.2	124
Show		18307-2700	RST2059		5	1.9	125
Show		18225-2651	JKS 21	AB	326	22.9	125
Show		18225-2651	JKS 21	AC	48	26.4	125
Show		18281-2300	OCC 45		-1	0.1	125
Show		18180-2505	OCC 669		-1	0.1	127
Show		18354-2607	TDT 949		91	0.7	127
Show		18294-2258	BRT1538		290	4.1	130
Show		18313-2307	LEO 39	AB	156	2.1	130
Show		18313-2307	LEO 39	AC	115	20.3	130
Show		18259-2713	RST2050		77	2.0	130

WDS 18273-2503 : COMPONENTS

	A
B	pa=353.9° sep=21.11"

18273-2503 A

Componente originario normalizzato	AB		Coord arcsec 2000	182718.60-250423.9		Mag	11.65		Spectral class	M0V: (red)
PmRA	-80.00		PmDE	-179.0		Tycho2	6861-02384-1

Tycho2

Tycho2	6861-02384-1	Pflag		RAmdeg	276.82751599	DEmdeg	-25.07331194
PmRA	-84.4	PmDE	-198.1	E RAmdeg	67	E DEmdeg	85
E pmRA	3.2	E pmDE	3.0	EpRAm	1983.13	EpDEm	1977.42
Num	4	Q RAmdeg	1.4	Q DEmdeg	0.8	Q pmRA	1.3
Q pmDE	0.8	BTmag	13.122	E BTmag	0.371	VTmag	11.649
E VTmag	0.162	Prox	999	TYC		HIP
CCDM		RAdeg	276.82775028	DEdeg	-25.07286194	EpRA 1990	1.82
EpDE 1990	1.81	E RAdeg	94.8	E DEdeg	124.5	Posflg
Corr	-0.2

18273-2503 B

Componente originario normalizzato	AB		Coord arcsec 2000	182718.44-250402.9		Mag	12.93		PmRA	-77.00
PmDE	-185.0		Calc delta mag	1.28		Calc coord	yes