20488+1943 JNN 286

20^h 48^m 52.44^s +19° 43' 04.8" P.A. 179.00 sep 0.2 mag 13.41,15.00 Sp M4.0

Coord 2000	20488+1943	Discov num	JNN 286	Comp		Coord arcsec 2000	20 48 52.44 +19 43 04.8
Date first	2012	Date last	2016	Obs	4
Pa first	133	Pa last	178.6	P.A. Now (θ)	178.6°
Sep first	0.2	Sep last	0.233	Sep. Now (ρ)	0.233"
Mag pri	13.41	Mag sec	15.00	delta mag (ΔM)	1.59	Spectral class	M4.0 (red)
Pri motion ra	-162	Sec motion ra
Pri motion dec	-191	Sec motion dec
Notes	N V (See Notes, Proper motion indicates physical)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

WDS 20488+1943 JNN 286 : NOTES

discov_num	notes	refcode
JNN 286	G 144-39. Estimated age 1000-10000 Myr; masses 0.50 +/- 0.07 and 0.24
	+/- 0.05 Msun; a ~7.4 au.	Jnn2014

REFERENCES

refcode	metd	author	reference
Jnn2014	A -	Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F.,	2014ApJ...789..102J
Jnn2014	+Cl	Hippler, S., & Henning, T.
Jnn2014		ApJ 789, 102, 2014

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20488+1943	JNN 286		2012	1	134	0.2	13.41	15.00	M4.0		204852.44+194304.8
20488+1943	JNN 286		2016	4	179	0.2	13.41	15.00	M4.0	NV	204852.44+194304.8

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WDS 20488+1943 JNN 286 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20488+1943 JNN 286 : MEASURES

No records found.

WDS 20488+1943 : VIRTUAL EYEPIECE

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WDS 20488+1943 : ALADIN DSS IMAGE @ 20^h 48^m 52.44^s +19° 43' 04.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20488+1943 JNN 286 : NEIGHBORHOODS

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Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		20488+1943	JNN 286		179	0.2
Show		20509+1953	UC 255		263	11.9	31
Show		20507+1959	ROE 16	AB	75	6.0	31
Show		20507+1959	ROE 16	AC	246	8.6	31
Show		20471+1918	HO 141	AB	294	1.6	36
Show		20471+1918	HO 141	AC	64	22.6	36
Show		20517+1954	TDT2585		272	0.6	41
Show		20466+1915	COU 426		158	0.3	43
Show		20467+1913	GWP2997		116	272.0	43
Show		20493+2026	HJ 926		190	5.8	44
Show		20509+1907	J 195		23	3.3	47
Show		20472+1901	TDT2538		234	1.0	49
Show		20485+1854	HO 459		24	0.5	50
Show		20524+2008	HO 144		350	0.4	56
Show		20448+1943	COU 424		239	5.5	58
Show		20444+1945	CAR 2		82	0.2	64
Show		20467+1846	YR 28		71	0.0	65
Show		20479+1840	UC 4292		105	11.0	65
Show		20534+1921	J 573		186	4.2	66
Show		20536+1935	HO 597		236	10.3	68
Show		20467+2044	HJ 2999	AB	221	10.3	68
Show		20467+2044	TOB 197	AC	271	19.5	68
Show		20436+1944	STF2722		306	7.5	74
Show		20435+1953	STF2721		22	2.6	77
Show		20447+2032	BRT2484		5	2.9	77
Show		20523+1841	UC 4314		181	49.2	79
Show		20449+2041	J 1179		143	4.0	80
Show		20480+1816	BPM2268		54	74.1	89
Show		20448+2051	A 172		219	2.9	89
Show		20433+1855	TDS1094		261	1.0	93
Show		20554+1935	UC 4329		262	32.9	93
Show		20499+1811	UC 4302		172	82.1	93
Show		20422+1952	LBU 19	AB	138	124.7	96
Show		20422+1952	LBU 19	AC	111	94.9	96
Show		20422+1952	LBU 19	AD	23	129.8	96
Show		20423+1921	SHN 39		54	0.5	96
Show		20419+1931	COU 226	AB	53	0.4	100
Show		20419+1931	COU 226	AC	337	13.9	100
Show		20553+1852	KPP3364		154	2.7	105
Show		20558+2027	J 606		185	2.6	107
Show		20425+1837	TDT2486		76	0.7	112
Show		20530+1806	UC 4316		216	48.9	113
Show		20410+2001	HJ 2987		116	10.8	114
Show		20444+2119	A 171		325	5.4	115
Show		20537+2116	J 2327	AB	48	68.4	115
Show		20537+2116	KPP3429	AD	9	32.9	115
Show		20408+1956	RAO 23	Ca,Cb	227	0.2	116
Show		20408+1956	RAO 23	CD	303	20.3	116
Show		20408+1956	RAO 23	CE	327	29.4	116
Show		20408+1956	BUP 215	AB	25	69.4	116
Show		20408+1956	LDS1045	AC	184	125.2	116

WDS 20488+1943 : COMPONENTS

	A
B	pa=178.7° sep=0.23"

20488+1943 A

Componente originario normalizzato	AB		Coord arcsec 2000	204852.44+194304.8		Mag	13.41		Spectral class	M4.0 (red)
PmRA	-162.00		PmDE	-191.0

20488+1943 B

Componente originario normalizzato	AB		Coord arcsec 2000	204852.44+194304.6		Mag	15		Calc delta mag	1.59
Calc coord	yes