21589-3227 LDS 4929

21^h 58^m 50.21^s -32° 28' 20.1" P.A. 353.00 sep 113.1 mag 14.30,15.30 Sp M3.5+M4.5

Coord 2000	21589-3227	Discov num	LDS4929	Comp		Coord arcsec 2000	21 58 50.21 -32 28 20.1
Date first	1960	Date last	2015	Obs	11
Pa first	354	Pa last	353.2	P.A. Now (θ)	353.2°
Sep first	113.0	Sep last	113.077	Sep. Now (ρ)	113.077"
Mag pri	14.30	Mag sec	15.30	delta mag (ΔM)	1	Spectral class	M3.5+M4.5 (red/red)
Pri motion ra	-350	Sec motion ra	-323
Pri motion dec	-411	Sec motion dec	-433
Notes	N R (See Notes, Red magnitudes)

rPM=0.064 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Piscis Austrinus

SUSPECTED ORBITAL ELEMENTS

Identifier	21589-3227
coord_arcsec_2000	215849.14-322625.3

Period (P)	6.141y	± 0.059	Periastron (T)	2005.73y	± 0.16	Semi-major axis (a)	28.1m	± 1.2
Eccentricity (e)	0.12	± 0.02	Inclination (i)	131.8°	± 4.1	Longitude of periastron (ω)	130.5°	± 11.2
Node (Ω)	130.5°	± 5.1	Notes	n		Reference	Lur2014
Equinox			Last observation	2012		Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000	323.4	0.024
2001	275.0	0.024
2002	206.4	0.021
2003	154.4	0.029
2004	119.6	0.029
2005	59.2	0.018
2006	331.0	0.023
2007	282.5	0.024
2008	216.5	0.020
2009	159.9	0.028
2010	124.8	0.029
2011	72.1	0.019
2012	339.6	0.022
2013	289.5	0.025
2014	227.0	0.020
2015	165.9	0.026
2016	129.6	0.030
2017	83.1	0.021
2018	349.4	0.020
2019	296.2	0.026
2020	237.5	0.020
2021	172.3	0.025
2022	134.4	0.030
2023	92.5	0.022
2024	0.7	0.019
2025	302.7	0.026
2026	247.6	0.021
2027	179.5	0.024
2028	139.1	0.030
2029	100.5	0.024
2030	13.8	0.018

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS 21589-3227 LDS 4929 : NOTES

discov_num	notes	refcode
LDS4929	Also known as LHS3739/8. Parallax = 50.92 +/- 0.77 mas.	Rdl2010

REFERENCES

No records found.

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
21589-3227	LDS4929		2001	2	353	113.2	15.40	16.20		D	215850.47-322814.7
21589-3227	LDS4929		2009	4	354	113.1	15.40	16.20	M3.5+M4.5	N D	215850.47-322814.7
21589-3227	LDS4929		2010	9	353	113.1	14.30	15.30	M3.5+M4.5	N R	215850.47-322814.7
21589-3227	LDS4929		2015	11	353	113.1	14.30	15.30	M3.5+M4.5	N R	215850.21-322820.1

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

WDS 21589-3227 LDS 4929 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21589-3227 LDS 4929 : MEASURES

No records found.

WDS 21589-3227 : VIRTUAL EYEPIECE

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WDS 21589-3227 : ALADIN DSS IMAGE @ 21^h 58^m 50.21^s -32° 28' 20.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21589-3227 LDS 4929 : 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		21589-3227	LDS4929		353	113.1
Show		21583-3207	RST2190		293	1.0	23
Show		21590-3258	UC 4620		72	57.6	30
Show		21581-3150	LDS5939		291	265.4	38
Show		22029-3243	KPP3096		329	4.3	53
Show		21558-3313	TSN 200		229	0.0	59
Show		21551-3148	I 1449		268	0.3	63
Show		22039-3244	RST2191		307	1.2	66
Show		21567-3123	B 1014		139	2.6	71
Show		22043-3253	UC 4642		303	42.0	73
Show		22047-3250	SKF1254		293	10.2	77
Show		21593-3110	BRT3104		226	3.4	79
Show		21575-3105	PRO 234		66	3.3	84
Show		21540-3334	LDS4919		118	36.2	90
Show		21538-3114	LDS5934		69	70.2	99
Show		21560-3055	HJ 5307	BC	161	26.2	100
Show		21560-3055	HJ 5307	AB	160	32.6	100
Show		21530-3119	RST2188		1	1.8	103
Show		21528-3112	LDS5932		173	167.0	109
Show		21509-3151	LDS4915		126	3.1	109
Show		22000-3039	BUG 6		5	1.0	111
Show		21573-3418	HDS3121	AB	105	0.8	112
Show		21573-3418	SKF 445	AC	153	13.7	112
Show		21553-3045	HJ 5304		255	9.2	114
Show		22084-3259	VSP 56		200	0.1	125
Show		21554-3430	I 673		271	1.0	130
Show		22040-3433	JSP 829		175	2.7	141
Show		22099-3233	B 1015		33	1.4	141
Show		21533-3439	UC 4589		235	15.0	148
Show		21597-2959	COO 247		264	2.6	150
Show		22053-3022	I 677		273	5.5	151
Show		21487-3351	RSS 564		172	57.9	152
Show		22066-3425	UC 4652		25	48.4	152
Show		22097-3345	CBL 187		278	49.9	157
Show		21466-3206	UC 4558		251	18.4	158
Show		21586-3511	SEE 462		193	10.9	163
Show		21585-2944	LSC 100		172	0.1	165
Show		21563-3510	UC 4606		76	41.1	165
Show		22075-3026	LDS4944		33	24.4	165
Show		22105-3350	DAW 156		340	1.7	168
Show		22104-3105	KPP1489		166	11.2	170
Show		21477-3054	FIN 330	AB	347	0.1	171
Show		21477-3054	HJ 5296	AB,C	343	32.1	171
Show		22064-3006	UC 4649		353	13.0	173
Show		22123-3204	SKF2103		31	30.7	173
Show		21576-2935	UC 4613		314	16.5	174
Show		21490-3431	TSN 100		106	8.1	175
Show		21569-3522	B 1394		317	0.6	175
Show		22123-3142	TVB 324		116	25.3	177
Show		21449-3302	I 1051		290	20.0	179
Show		21452-3139	DAW 230	AB	106	13.1	180

WDS 21589-3227 : COMPONENTS

	A
B	pa=354.3° sep=112.85"

21589-3227 A

Componente originario normalizzato	AB		Coord arcsec 2000	215850.21-322820.1		Mag	14.3		Spectral class	M3.5 (red)
PmRA	-350.00		PmDE	-411.0

21589-3227 B

Componente originario normalizzato	AB		Coord arcsec 2000	215849.32-322627.8		Mag	15.3		Spectral class	M4.5 (red)
PmRA	-323.00		PmDE	-433.0		Calc delta mag	1		Calc coord	yes