18260+6534 UC 3580 (42 Dra)

18^h 25^m 59.14^s +65° 33' 48.5" P.A. 208.00 sep 24.4 mag 4.80,13.00 Sp K2III dist. 96.53 pc (314.88 l.y.)

Coord 2000	18260+6534	Discov num	UC 3580	Comp		Coord arcsec 2000	18 25 59.14 +65 33 48.5
Date first	1999	Date last	2016	Obs	8
Pa first	209	Pa last	208.4	P.A. Now (θ)	208.4°
Sep first	24.5	Sep last	24.435	Sep. Now (ρ)	24.435"
Mag pri	4.80	Mag sec	13.00	delta mag (ΔM)	8.2	Spectral class	K2III (yellow-orange)
Pri motion ra	+107	Sec motion ra	+104
Pri motion dec	-027	Sec motion dec	-037
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.095 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	42 Dra	Common name	Fafnir	Constellation	Draco	SAO	17888
HIP	90344	Tycho2	4222-02311-1	Gaia DR2	2256800156348230400	HD	170693
HR	6945	GC	25212	BD	BD+65 1271	Flamsteed	42 Draconis
Flamsteed name	42 Dra	FK5	3465	Distance	96.53	Distance ly	314.88

Meaning

Named after a Norse mythological dwarf who turned into a dragon.

WDS 18260+6534 UC 3580 (42 Dra) : NOTES

discov_num	notes	refcode
UC 3580	42 Dra = Fafnir
	CHARA Array Limb-darkened diameter 2.041 +/- 0.043 mas.	CIA2010c
	R = 21.19 +/- 0.60 \rsun, L = 149.7 +/- 15.3 \lsun,
	Teff = 4486 +/- 122 K.
	NPOI Limb-darkened diameter 2.048 +/- 0.009 mas, Sp = K1III,	NOI2018
	R = 21.25 +/- 0.42 \rsun, Teff = 4714 +/-101 K,
	L = 201.1 +/- 18.8 \lsun, M = 1.54 +/- 0.24 \msun,
	Age = 1.93 +/- 0.91 Gyr.

REFERENCES

refcode	metd	author	reference
CIA2010c	not j	Baines, E.K., Dollinger, M.P., Cusano, F., Guenther, E.W., Hatzes, A.P.,	2010ApJ...710.1365B
CIA2010c		McAlister, H.A., ten Brummelaar, T.A., Turner, N.H., Sturmann, J., Sturmann, L.,	.
CIA2010c		Goldfinger, P.J., Farrington, C.D. & Ridgway, S.T.	.
CIA2010c		ApJ 710, 1365, 2010	.
NOI2018	not j	Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter,	2018AJ....155...30B
NOI2018		D.J., Tycner, C. & van Belle, G.T.
NOI2018		AJ 155, 30, 2018

DISCOVERER

idgroup	discov	author
1	UC	USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)
1	UC	Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,
1	UC	& Zacharias, M.I. (UCAC4 Catalog)
12	UC	Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,
12	UC	DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
12	UC	Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18260+6534	UC 3580		2000	2	209	24.2	7.50	14.10		V	182559.14+653348.5
18260+6534	UC 3580		2003	2	210	23.5	7.50	14.10		V	182559.14+653348.5
18260+6534	UC 3580		2014	5	209	24.6	4.80	13.00	K2III	NV	182559.14+653348.5
18260+6534	UC 3580		2015	6	208	24.4	4.80	13.00	K2III	NV	182559.14+653348.5
18260+6534	UC 3580		2016	8	208	24.4	4.80	13.00	K2III	NV	182559.14+653348.5

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

WDS 18260+6534 UC 3580 (42 Dra) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18260+6534 UC 3580 (42 Dra) : MEASURES

No records found.

WDS 18260+6534 (42 Dra) : 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 18260+6534 (42 Dra) : ALADIN DSS IMAGE @ 18^h 25^m 59.14^s +65° 33' 48.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18260+6534 UC 3580 (42 Dra) : 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	Fafnir	18260+6534	UC 3580		208	24.4
Show		18287+6506	HU 931	AB	82	0.5	33
Show		18287+6506	STF2343	AC	212	8.6	33
Show		18312+6526	KUI 86		44	23.0	34
Show		18252+6455	STF2332		260	11.6	36
Show		18241+6619	TDT 832		131	2.3	47
Show		18312+6608	ES 1911		293	5.7	47
Show		18232+6440	SHN 37		83	0.2	58
Show		18200+6426	TDS 917		148	0.9	78
Show		18335+6432	FAR 67	Aa,Ab	222	0.1	79
Show		18335+6432	FAR 67	AB	129	1.8	79
Show		18212+6651	KPP4105		151	1.5	83
Show		18305+6412	MLR 62		8	1.0	87
Show		18142+6445	COM 4		279	298.5	89
Show		18145+6454	MLB 212		321	3.6	89
Show		18338+6415	MLB 213		321	4.3	94
Show		18169+6415	SLW1218		44	12.7	98
Show		18417+6520	LDS2748		226	50.5	100
Show		18218+6358	ES 1837		216	15.3	101
Show		18364+6655	TOK 323		116	181.1	103
Show		18139+6424	STT 586	AB	263	331.4	104
Show		18139+6424	RDR 7	AC	97	3.4	104
Show		18254+6349	SLW1219		313	9.6	105
Show		18409+6633	LDS2419		212	45.1	108
Show		18162+6404	ES 186		330	7.9	109
Show		18361+6405	MLB 214		124	2.0	110
Show		18226+6347	MLR 55		202	1.0	110
Show		18427+6618	TOI1825		208	3.0	112
Show		18396+6416	LDS2745		86	37.5	117
Show		18294+6338	KPP 414		187	4.9	118
Show		18115+6418	ES 1835		309	4.3	120
Show		18329+6343	STF2357		271	4.7	120
Show		18384+6708	STF2384	AB	307	0.4	120
Show		18384+6708	STF2384	AB,C	162	136.5	120
Show		18063+6543	LDS1461		203	4.7	123
Show		18352+6342	STF2365		23	20.0	127
Show		18430+6427	UC 3653		335	32.5	128
Show		18426+6420	LDS2420		84	9.3	128
Show		18095+6414	HU 926		264	3.9	132
Show		18196+6743	MLB 413		147	2.6	134
Show		18377+6342	HU 933		2	0.9	135
Show		18446+6649	MLB 286		290	3.8	137
Show		18418+6402	WIS 329		288	491.7	137
Show		18393+6348	ES 126	BC	24	4.8	137
Show		18393+6348	ES 126	AB	52	72.4	137
Show		18393+6348	ES 126	AD	54	46.0	137
Show		18272+6317	TDT 876		259	0.5	137
Show		18381+6341	KPP2683		134	3.5	138
Show		18114+6721	LDS1462		237	119.1	138
Show		18384+6332	STF2377	AB	338	16.9	146
Show		18384+6332	WAL 150	AC	351	94.9	146

WDS 18260+6534 : COMPONENTS

	A
B	pa=192.6° sep=22.03"

18260+6534 A

Componente originario normalizzato	AB	Name	42 Dra	Common name	Fafnir	Meaning	Named after a Norse mythological dwarf who turned into a dragon.
Coord arcsec 2000	182559.14+653348.5	Mag	4.8	Spectral class	K2III (yellow-orange)	PmRA	107.00
PmDE	-27.0	SAO	17888	HIP	90344	Tycho2	4222-02311-1
HD	170693	HR	6945	GC	25212	BD	BD+65 1271
Flamsteed	42 Draconis	Flamsteed name	42 Dra	FK5	3465

Tycho2

Tycho2	4222-02311-1	Pflag		RAmdeg	276.49640520	DEmdeg	65.56348038
PmRA	105.1	PmDE	-26.9	E RAmdeg	3	E DEmdeg	3
E pmRA	1.0	E pmDE	1.1	EpRAm	1991.65	EpDEm	1991.59
Num	11	Q RAmdeg	1.3	Q DEmdeg	1.3	Q pmRA	1.4
Q pmDE	1.2	BTmag	6.345	E BTmag	0.014	VTmag	4.955
E VTmag	0.009	Prox	999	TYC	T	HIP	90344
CCDM		RAdeg	276.49582667	DEdeg	65.56354250	EpRA 1990	1.80
EpDE 1990	1.70	E RAdeg	3.4	E DEdeg	3.4	Posflg
Corr	-0.1

SAO

SAO	17888	DelFlag		RA1950		PmRA1950	0.0156
DE1950		PmDE1950	-0.026	Vmag	5	SpType	K0
Double code		Source	70	CatNum	25212	DM	BD+65 1271
DMcomp		BDsup		HD	170693	M HD	0
GC	25212	RA1950rad	4.82513915	DE1950rad	1.143757	PmRA2000	0.0166
PmDE2000	-0.026

Hipparcos

Catalog	H	HIP	90344	Proxy		RAhms	18 25 58.99
DEdms	+65 33 48.8	Vmag	4.82	VarFlag		R Vmag	H
RAdeg	276.496	DEdeg	65.5635	AstroRef		Plx	10.28
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	170693	BD	BD+65 1271
CD		CP		Dm number	+65 1271	VIred	1.16
SpType	K2III	R SpType		Coord arcsec 2000	182558.99+653348.8

Hipparcos 2

HIP	90344	Sn	5	So	0	Nc	1
RArad	4.825761795	DErad	1.1442997543	Plx	10.36	PmRA	105.83
PmDE	-27.24	E RArad	0.19	E DErad	0.21	E Plx	0.2
E pmRA	0.21	E pmDE	0.28	Hpmag	4.9835	E Hpmag	0.0006
SHp	0.004	VA	0	BV	1.179	E BV	0.013
VI	1.16

18260+6534 B

Componente originario normalizzato	AB		Coord arcsec 2000	182558.37+653327.0		Mag	13		PmRA	104.00
PmDE	-37.0		Calc delta mag	8.2		Calc coord	yes