19544+3918 HJ 2909 AD

19^h 54^m 24.36^s +39° 17' 18.0" P.A. 246.00 sep 30.6 mag 11.10,12.40 Sp A0

Coord 2000	19544+3918	Discov num	HJ 2909	Comp	AD	Coord arcsec 2000	19 54 24.36 +39 17 18.0
Date first	1895	Date last	2015	Obs	12
Pa first	247	Pa last	246.1	P.A. Now (θ)	246.1°
Sep first	29.6	Sep last	30.555	Sep. Now (ρ)	30.555"
Mag pri	11.10	Mag sec	12.40	delta mag (ΔM)	1.3	Spectral class	A0 (white)
Pri motion ra	+000	Sec motion ra	-007
Pri motion dec	-003	Sec motion dec	-003
Notes	N (See Notes)

rPM=0.919

This double is not physical.

19544+3918 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 226471		19 54 24 +39 17 18	SEI 721 AB	2015	12	199	6.2	11.10	12.20	1.10
Show			19 54 24 +39 17 18	SEI 722 AC	2015	11	65	21.2	11.10	12.50	1.40
Show			19 54 24 +39 17 18	HJ 2909 AD	2015	12	246	30.6	11.10	12.40	1.30		<===

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3137-00703-1

Gaia DR2

2073383096956069248

226471

WDS 19544+3918 HJ 2909 AD : NOTES

discov_num	notes	refcode
HJ 2909	AD: SEI 720.	Nsn2017b

REFERENCES

refcode	metd	author	reference
Nsn2017b	not -	Nanson, J.	...................
Nsn2017b		private communication, 2017

DISCOVERER

idgroup	discov	author
1	HJ	Herschel, J.F.W.
50	SEI	Scheiner, J.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19544+3918	HJ 2909	AD	1998	6	246	30.5	11.10	12.10		D	195424.36+391718.0
19544+3918	HJ 2909	AD	2002	7	246	30.5	11.10	12.10		D	195424.36+391718.0
19544+3918	HJ 2909	AD	2015	8	246	30.5	11.10	12.40	A0	N	195424.36+391718.0

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

WDS 19544+3918 HJ 2909 AD : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19544+3918 HJ 2909 AD : MEASURES

No records found.

WDS 19544+3918 : VIRTUAL EYEPIECE

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

WDS 19544+3918 : ALADIN DSS IMAGE @ 19^h 54^m 24.36^s +39° 17' 18.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 19544+3918 HJ 2909 AD : 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		19544+3918	SEI 721	AB	199	6.2
Show		19544+3918	SEI 722	AC	65	21.2
Show		19544+3918	HJ 2909	AD	246	30.6
Show		19539+3923	SEI 719		60	16.0	8
Show		19539+3906	SEI 718		354	15.9	13
Show		19555+3919	TDT1852	AB	32	2.1	14
Show		19555+3919	SEI 733	AC	142	23.4	14
Show		19558+3918	MLB 877		32	5.0	17
Show		19559+3918	MLB 879		140	4.1	17
Show		19529+3922	SEI 713		136	16.8	17
Show		19556+3907	SEI 734		117	23.3	18
Show		19559+3915	MLB 878		196	3.8	18
Show		19535+3933	MLB 947		255	6.7	19
Show		19528+3916	ALI1127		175	11.7	19
Show		19534+3934	MLB 946		221	5.1	20
Show		19527+3924	ALI1126		167	19.0	21
Show		19535+3859	SEI 717	AB	105	4.7	22
Show		19535+3859	ES 2684	AC	318	16.0	22
Show		19533+3935	MLB 945		85	1.4	22
Show		19564+3916	ALI 909	BC	320	3.7	24
Show		19564+3916	ALI 909	AB	201	14.7	24
Show		19564+3916	ALI 909	AC	215	13.3	24
Show		19529+3934	MLB 943		243	4.5	25
Show		19530+3936	MLB 944		152	7.2	25
Show		19567+3920	MLB 880		268	4.4	28
Show		19530+3856	MLB 767		127	8.2	28
Show		19547+3850	SEI 725		298	31.8	28
Show		19561+3937	GRV 297		1	33.4	29
Show		19563+3935	SEI 740		163	9.5	29
Show		19569+3922	SEI 742		144	7.8	30
Show		19551+3948	GRV 294		217	32.6	33
Show		19556+3946	GRV 296		1	67.9	33
Show		19573+3927	SEI 744		85	16.5	34
Show		19530+3846	BUP 201	AB	266	28.1	35
Show		19530+3846	OPI9002	AC	217	29.0	35
Show		19516+3932	HDS2830		204	0.7	36
Show		19535+3953	DEA 251		174	10.8	38
Show		19576+3914	J 1069		66	2.4	38
Show		19561+3845	A 1407		147	1.0	38
Show		19574+3931	SEI 746		324	26.2	38
Show		19535+3955	KOI6465		70	3.6	39
Show		19578+3910	HEI9014		103	8.9	40
Show		19528+3953	HEI 179		73	4.6	40
Show		19576+3906	MLB 981		61	6.2	40
Show		19531+3954	KOI7554		256	1.6	40
Show		19529+3840	DAM 817	BC	120	5.9	41
Show		19509+3910	A 1406		269	1.2	41
Show		19529+3840	OPI9001	AB	28	45.9	41
Show		19548+3959	KOI3944	AB	298	3.5	42
Show		19548+3959	KOI3944	AC	77	3.7	42
Show		19544+3959	JKA 97		359	11.6	43

WDS 19544+3918 : COMPONENTS

	A	B	C
B	pa=194.9° sep=6.07"
C	pa=58.9° sep=17.39"	pa=48.0° sep=22.16"
D	pa=240.2° sep=24.91"	pa=252.0° sep=21.09"	pa=239.7° sep=42.30"

19544+3918 A

Name	HD 226471		Coord arcsec 2000	195424.36+391718.0		Mag	11.1		Spectral class	A0 (white)
PmRA	0.00		PmDE	-3.0		Tycho2	3137-00703-1		HD	226471

Tycho2

Tycho2	3137-00703-1	Pflag		RAmdeg	298.60148848	DEmdeg	39.28834889
PmRA	-0.2	PmDE	-2.3	E RAmdeg	36	E DEmdeg	35
E pmRA	1.3	E pmDE	1.3	EpRAm	1981.70	EpDEm	1982.09
Num	6	Q RAmdeg	0.6	Q DEmdeg	0.4	Q pmRA	0.6
Q pmDE	0.5	BTmag	11.071	E BTmag	0.052	VTmag	11.098
E VTmag	0.077	Prox	860	TYC	T	HIP
CCDM		RAdeg	298.60148889	DEdeg	39.28835417	EpRA 1990	1.67
EpDE 1990	1.66	E RAdeg	38.2	E DEdeg	37.3	Posflg
Corr	0.1

19544+3918 B

Coord arcsec 2000	195424.23+391712.1		Mag	12.2		PmRA	61.00		PmDE	32.0
Calc delta mag	1.1		Calc coord	yes

19544+3918 C

Coord arcsec 2000	195425.64+391727.0		Mag	12.5		PmRA	5.00		PmDE	2.0
Calc delta mag	1.4		Calc coord	yes

19544+3918 D

Coord arcsec 2000	195422.50+391705.6		Mag	12.4		PmRA	-7.00		PmDE	-3.0
Calc delta mag	1.3		Calc coord	yes