21024+2748 TOK 345 (ER Vul)

21^h 02^m 25.90^s +27° 48' 26.4" P.A. 119.00 sep 80.2 mag 7.42,15.73 Sp F8/9Vp? dist. 52 pc (169.62 l.y.)

Coord 2000	21024+2748	Discov num	TOK 345	Comp		Coord arcsec 2000	21 02 25.90 +27 48 26.4
Date first	1980	Date last	2015	Obs	9
Pa first	119	Pa last	119	P.A. Now (θ)	119°
Sep first	80.2	Sep last	80.196	Sep. Now (ρ)	80.196"
Mag pri	7.42	Mag sec	15.73	delta mag (ΔM)	8.31	Spectral class	F8/9Vp? (yellow-white)
Pri motion ra	+087	Sec motion ra	+089
Pri motion dec	+006	Sec motion dec	+014
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.092 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Var name	ER Vul	Constellation	Vulpecula	SAO	89396	HIP	103833
Tycho2	2180-00611-1	Gaia DR2	1845206534070618624	HD	200391	BD	BD+27 3952
Distance	52	Distance ly	169.62

WDS 21024+2748 TOK 345 (ER Vul) : NOTES

discov_num	notes	refcode
TOK 345	A is ER Vul, W UMa-type eclipsing, X-ray source, SB2E, P=0.698d. Third
	body around ER Vul is suggested from (O-C) period, ~30yr?	Tok2014d

REFERENCES

refcode	metd	author	reference
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21024+2748	TOK 345		1980	1	119	80.2	7.42	15.73		V	210225.90+274826.4
21024+2748	TOK 345		1998	2	119	80.2	7.42	15.73		V	210225.90+274826.4
21024+2748	TOK 345		2002	3	119	80.0	7.42	15.73	F8/9Vp?	NV	210225.90+274826.4
21024+2748	TOK 345		2010	4	119	80.1	7.42	15.73	F8/9Vp?	NV	210225.90+274826.4
21024+2748	TOK 345		2015	5	119	80.2	7.42	15.73	F8/9Vp?	NV	210225.90+274826.4

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

WDS 21024+2748 TOK 345 (ER Vul) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21024+2748 TOK 345 (ER Vul) : MEASURES

No records found.

WDS 21024+2748 (ER Vul) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21024+2748 (ER Vul) : ALADIN DSS IMAGE @ 21^h 02^m 25.90^s +27° 48' 26.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21024+2748 TOK 345 (ER Vul) : 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		21024+2748	TOK 345		119	80.2
Show		21017+2803	TDT2702		25	2.6	18
Show		21014+2808	MLB 619		218	5.4	24
Show		21020+2815	LDS2936		237	4.4	28
Show		21023+2819	COU 524		258	1.3	31
Show		21001+2757	MLB 618		339	7.3	34
Show		21045+2807	MLB 665		326	8.4	34
Show		21045+2730	J 1180		276	4.0	34
Show		21001+2801	MLB 617		331	8.6	34
Show		21029+2711	J 1223	AB	295	4.7	38
Show		21029+2711	J 1223	AC	134	22.1	38
Show		20596+2740	MLB 616		233	4.1	40
Show		21053+2807	HDS3006		12	0.7	43
Show		20599+2813	J 3122	AB	53	2.3	44
Show		20599+2813	DAM 225	AB,C	323	10.2	44
Show		20599+2813	DAM 225	AB,D	305	9.3	44
Show		21006+2829	COU1040	AB	347	1.5	49
Show		21061+2801	COU 525		168	1.1	50
Show		21054+2824	MLB 666		352	1.4	54
Show		21040+2841	HJ 1609	AB	36	8.1	57
Show		21040+2841	HJ 1609	CD	193	6.1	58
Show		21007+2844	BRT 54		358	7.0	60
Show		20576+2802	HJ 1599		225	13.5	66
Show		21070+2816	HJ 1611		279	10.7	66
Show		21061+2843	LDS2939		320	5.9	73
Show		21065+2655	COU 527	Aa,Ab	305	0.3	76
Show		21065+2655	STF2756	AB	48	11.9	76
Show		21065+2655	STF2756	AC	288	75.0	76
Show		21072+2833	COU 528		70	1.2	77
Show		20582+2654	COU 833		253	2.4	78
Show		21035+2906	BU 445	AB	109	4.7	79
Show		21035+2906	BU 445	AC	19	50.7	79
Show		21035+2906	BU 445	AD	317	87.3	79
Show		21035+2906	BU 445	AE	218	103.5	79
Show		21035+2906	ARN 21	AF	233	219.9	79
Show		21046+2902	TDT2726		311	0.6	79
Show		21055+2901	MLB 536		236	5.4	84
Show		20560+2735	HO 460	AB	112	13.3	87
Show		20560+2735	HO 460	AC	257	37.7	87
Show		20565+2712	COU 832		261	1.3	88
Show		20562+2816	MLB 615		200	3.6	88
Show		20559+2804	MLB 614		75	8.7	89
Show		21046+2624	GRV 409		19	61.3	89
Show		20562+2826	GRV 397		339	58.2	91
Show		21057+2912	GRV 416		137	38.2	95
Show		21092+2820	MLB 537		99	7.0	95
Show		21007+2920	AZC 109		324	34.8	95
Show		21010+2616	RAO 620		99	0.4	95
Show		20551+2808	COU 831		289	1.3	100
Show		20550+2805	BU 367	AB	224	0.1	100
Show		20550+2805	A 3109	AB,E	51	49.2	100

WDS 21024+2748 : COMPONENTS

	A
B	pa=122.1° sep=73.22"

21024+2748 A

Componente originario normalizzato	AB	Name	ER Vul	Coord arcsec 2000	210225.90+274826.4	Mag	7.42
Spectral class	F8/9Vp? (yellow-white)	PmRA	87.00	PmDE	6.0	SAO	89396
HIP	103833	Tycho2	2180-00611-1	HD	200391	BD	BD+27 3952

Tycho2

Tycho2	2180-00611-1	Pflag		RAmdeg	315.60794353	DEmdeg	27.80734344
PmRA	87.3	PmDE	6.2	E RAmdeg	4	E DEmdeg	4
E pmRA	1.5	E pmDE	1.4	EpRAm	1991.47	EpDEm	1991.36
Num	12	Q RAmdeg	1.0	Q DEmdeg	0.5	Q pmRA	0.9
Q pmDE	0.6	BTmag	8.082	E BTmag	0.015	VTmag	7.416
E VTmag	0.010	Prox	999	TYC	T	HIP	103833
CCDM		RAdeg	315.60771444	DEdeg	27.80732889	EpRA 1990	1.66
EpDE 1990	1.56	E RAdeg	4.3	E DEdeg	4.4	Posflg
Corr	0.1

SAO

SAO	89396	DelFlag		RA1950		PmRA1950	0.0062
DE1950		PmDE1950	0.007	Vmag	7.5	SpType	G0
Double code		Source	34	CatNum	12031	DM	BD+27 3952
DMcomp		BDsup		HD	200391	M HD	0
GC		RA1950rad	5.49898186	DE1950rad	0.48187259	PmRA2000	0.0063
PmDE2000	0.004

Hipparcos

Catalog	H	HIP	103833	Proxy		RAhms	21 02 25.85
DEdms	+27 48 26.4	Vmag	7.33	VarFlag	2	R Vmag	H
RAdeg	315.608	DEdeg	27.8073	AstroRef		Plx	20.06
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	200391	BD	BD+27 3952
CD		CP		Dm number	+27 3952	VIred	0.68
SpType	G0IIIvar	R SpType		Coord arcsec 2000	210225.85+274826.4

Hipparcos 2

HIP	103833	Sn	5	So	0	Nc	1
RArad	5.5083936221	DErad	0.4853294649	Plx	19.23	PmRA	87.95
PmDE	5.88	E RArad	0.38	E DErad	0.4	E Plx	0.6
E pmRA	0.47	E pmDE	0.44	Hpmag	7.4598	E Hpmag	0.0031
SHp	0.039	VA	1	BV	0.614	E BV	0.01
VI	0.68

21024+2748 B

Componente originario normalizzato	AB		Coord arcsec 2000	210230.58+274747.5		Mag	15.73		PmRA	89.00
PmDE	14.0		Calc delta mag	8.31		Calc coord	yes