18488+6853 LDS 2421

18^h 48^m 48.07^s +68° 52' 35.7" P.A. 274.00 sep 34.6 mag 9.73,17.40 Sp G5V+DA dist. 78.86 pc (257.24 l.y.)

Coord 2000	18488+6853	Discov num	LDS2421	Comp		Coord arcsec 2000	18 48 48.07 +68 52 35.7
Date first	1954	Date last	2016	Obs	14
Pa first	274	Pa last	274.3	P.A. Now (θ)	274.3°
Sep first	33.0	Sep last	34.591	Sep. Now (ρ)	34.591"
Mag pri	9.73	Mag sec	17.40	delta mag (ΔM)	7.67	Spectral class	G5V+DA (yellow/white dwarf)
Pri motion ra	+082	Sec motion ra	+111
Pri motion dec	+164	Sec motion dec	+155
Notes	V (Proper motion indicates physical)

rPM=0.159 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation	Draco		HIP	92306		Tycho2	4431-00619-1		Gaia DR2	2259262615716342912
BD	BD+68 1027		Distance	78.86		Distance ly	257.24

WDS 18488+6853 LDS 2421 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
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
18488+6853	LDS2421		1999	2	274	33.9	9.73	17.40	G5	DV	184847.94+685234.3
18488+6853	LDS2421		2013	6	274	34.6	9.73	17.40	G5+DA	V	184847.94+685234.3
18488+6853	LDS2421		2015	8	274	34.6	9.73	17.40	G5V+DA	V	184848.07+685235.7
18488+6853	LDS2421		2016	14	274	34.6	9.73	17.40	G5V+DA	V	184848.07+685235.7

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

WDS 18488+6853 LDS 2421 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18488+6853 LDS 2421 : MEASURES

No records found.

WDS 18488+6853 : VIRTUAL EYEPIECE

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WDS 18488+6853 : ALADIN DSS IMAGE @ 18^h 48^m 48.07^s +68° 52' 35.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18488+6853 LDS 2421 : 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		18488+6853	LDS2421		274	34.6	1
Show		18484+6908	WFC 254		218	13.3	16
Show		18457+6849	TDT1039		329	0.4	18
Show		18463+6909	SKF2739		227	6.8	21
Show		18440+6830	CTI 134		326	6.8	35
Show		18497+6930	MLR 96		267	1.7	38
Show		18549+6911	WFC 215		254	3.8	38
Show		18402+6815	KPP 813		166	7.0	60
Show		18411+6810	MLB 355	AB	197	8.5	61
Show		18411+6810	MLB 355	AC	270	23.4	61
Show		18393+6931	TOI1859		184	10.6	64
Show		18551+6757	LDS2424		354	13.3	66
Show		18562+6952	TDS 954		309	0.9	72
Show		18383+6937	CTI 848		280	1.0	72
Show		18473+7004	KPP1662		151	12.8	72
Show		18414+7001	GNO 2		82	0.1	79
Show		19024+6927	STF2478		316	1.0	80
Show		18393+6955	WFC 211		68	9.5	81
Show		18335+6929	MLR 95		44	0.2	90
Show		18332+6929	SKF2738		333	15.2	91
Show		19014+6737	UC 3764		311	35.3	103
Show		18343+7003	KPP 764		231	6.6	104
Show		18338+7003	STF2370		135	10.5	106
Show		18535+7036	A 1172		261	6.8	106
Show		19050+6928	LDS1899		250	3.2	107
Show		18325+6957	STF2366	AB	333	29.8	108
Show		18325+6957	FOX9012	AC	249	10.3	108
Show		19083+6928	DAM 136		112	9.2	110
Show		18581+6716	MLB 414		140	2.0	111
Show		18543+6706	MLB 287		314	7.4	111
Show		18543+6705	MLB1080		6	10.0	113
Show		18339+7016	MLR 97		111	0.2	115
Show		19079+6756	MLB1082		39	12.9	120
Show		18384+6708	STF2384	AB	307	0.4	121
Show		18384+6708	STF2384	AB,C	162	136.5	121
Show		18446+6649	MLB 286		290	3.8	125
Show		19022+6702	LDS2427		88	3.0	134
Show		18364+6655	TOK 323		116	181.1	138
Show		19067+6716	LDS2760		220	23.5	139
Show		18484+7115	TDT1061		216	0.6	143
Show		18409+6633	LDS2419		212	45.1	147
Show		18592+6629	TDT1166		195	0.9	156
Show		19078+6658	UC 3809		108	62.4	157
Show		18427+6618	TOI1825		208	3.0	159
Show		18441+7129	LDS1891		98	3.2	159
Show		19000+6620	MLB1081		130	6.4	164
Show		18317+7120	A 1170		188	0.9	172
Show		19063+6632	TDT1225		96	2.4	173
Show		18526+6556	LDS2423		359	11.1	179
Show		18312+7131	WIS 328		182	940.0	182
Show		19070+7143	TDT1228		225	0.9	194

WDS 18488+6853 : COMPONENTS

	A
B	pa=281.8° sep=12.70"

18488+6853 A

Componente originario normalizzato	AB	Coord arcsec 2000	184848.07+685235.7	Mag	9.73	Spectral class	G5V (yellow)
PmRA	82.00	PmDE	164.0	HIP	92306	Tycho2	4431-00619-1
BD	BD+68 1027

Tycho2

Tycho2	4431-00619-1	Pflag		RAmdeg	282.20032180	DEmdeg	68.87659950
PmRA	81.6	PmDE	163.5	E RAmdeg	16	E DEmdeg	17
E pmRA	1.5	E pmDE	1.5	EpRAm	1989.45	EpDEm	1989.14
Num	6	Q RAmdeg	0.2	Q DEmdeg	0.5	Q pmRA	0.3
Q pmDE	0.5	BTmag	10.380	E BTmag	0.032	VTmag	9.780
E VTmag	0.026	Prox	999	TYC	T	HIP	92306
CCDM		RAdeg	282.19980111	DEdeg	68.87622111	EpRA 1990	1.71
EpDE 1990	1.65	E RAdeg	17.0	E DEdeg	17.5	Posflg
Corr	0.0

Hipparcos

Catalog	H	HIP	92306	Proxy		RAhms	18 48 47.94
DEdms	+68 52 34.3	Vmag	9.67	VarFlag		R Vmag	H
RAdeg	282.2	DEdeg	68.8762	AstroRef		Plx	13.33
CCDM	18487+6853	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD		BD	BD+68 1027
CD		CP		Dm number	+68 1027	VIred	0.66
SpType	G5	R SpType		Coord arcsec 2000	184847.94+685234.3

Hipparcos 2

HIP	92306	Sn	5	So	0	Nc	1
RArad	4.9253150312	DErad	1.2021164535	Plx	12.68	PmRA	81.27
PmDE	163.32	E RArad	0.74	E DErad	0.72	E Plx	0.76
E pmRA	0.81	E pmDE	0.88	Hpmag	9.8021	E Hpmag	0.0019
SHp	0.017	VA	0	BV	0.628	E BV	0.038
VI	0.7

18488+6853 B

Componente originario normalizzato	AB		Coord arcsec 2000	184845.77+685238.3		Mag	17.4		Spectral class	DA (white dwarf)
PmRA	111.00		PmDE	155.0		Calc delta mag	7.67		Calc coord	yes