12321-1612 LAF 47 (Eta Crv)

12^h 32^m 04.22^s -16° 11' 45.6" P.A. 256.00 sep 12.9 mag 3.40,19.20 Sp F2V dist. 18.28 pc (59.63 l.y.)

Coord 2000	12321-1612	Discov num	LAF 47	Comp		Coord arcsec 2000	12 32 04.22 -16 11 45.6
Date first	2005	Date last	2005	Obs	1
Pa first	256	Pa last	256.2	P.A. Now (θ)	256.2°
Sep first	12.9	Sep last	12.92	Sep. Now (ρ)	12.92"
Mag pri	3.40	Mag sec	19.20	delta mag (ΔM)	15.8	Spectral class	F2V (yellow-white)
Pri motion ra	-424	Sec motion ra
Pri motion dec	-058	Sec motion dec
Notes	K (K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	Eta Crv	Var name	NSV5690 Crv	Constellation	Corvus	SAO	157345
HIP	61174	Tycho2	6103-02394-1	HD	109085	HR	4775
GC	17087	GL	Gl 471.2	BD	BD-15 3489	Bayer	Eta Corvi
Bayer name	Eta Crv	Flamsteed	8 Corvi	Flamsteed name	8 Crv	Distance	18.28
Distance ly	59.63	Bayer greek	η Crv

WDS 12321-1612 LAF 47 (Eta Crv) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Laf2007	A j	Lafreniere, D., Doyon, R., Marois, C., Nadeau, D., Oppenheimer, B.R., Roche, P.F.,	2007ApJ...670.1367L
Laf2007	+C	Rigaut, F., Graham, J.R., et al.
Laf2007		ApJ 670, 1367, 2007
Laf2008	A j	Lafreniere, D., Jayawardhana, R., Brandeker, A., Ahmic, M., & van Kerkwijk, M.H.	2008ApJ...683..844L
Laf2008	+Hp	ApJ 683, 844, 2008
Laf2008b	A j	Lafreniere, D., Jayawardhana, R., & van Kerkwijk, M.H.	2008ApJ...689L.153L
Laf2008b		ApJ 689, L153, 2008
Laf2009	Hn u	Lafreniere, D., Marois, C., Doyon, R., & Barman, T.	2009ApJ...694L.148L
Laf2009		ApJ 694, L148, 2009
Laf2010	A u	Lafreniere, D., Jayawardhana, R., & van Kerkwijk, M.H.	2010ApJ...719..497L
Laf2010		ApJ 719, 497, 2010
Laf2011	A u	Lafreniere, D., Jayawardhana, R., Janson, M., Helling, C., Witte, S., &	2011ApJ...730...42L
Laf2011		Hauschildt, P.
Laf2011		ApJ 730, 42, 2011
Laf2011		(photometry of both components based on 2MASS PSC plus their contrast measures)
Laf2014	A j	Lafreniere, D., Jayawardhana, R., van Kerkwijk, M.H., Brandeker, A., & Janson, M.	2014ApJ...785...47L
Laf2014	+Al	ApJ 785, 47, 2014

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
12321-1612	LAF 47		2005	1	256	12.9	4.31	20.00	F2V	D	123204.48-161145.1

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WDS 12321-1612 LAF 47 (Eta Crv) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 12321-1612 LAF 47 (Eta Crv) : MEASURES

No records found.

WDS 12321-1612 (Eta Crv) : 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 12321-1612 (Eta Crv) : ALADIN DSS IMAGE @ 12^h 32^m 04.22^s -16° 11' 45.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 12321-1612 LAF 47 (Eta Crv) : 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		12321-1612	LAF 47		256	12.9
Show		12332-1605	UC 2357		303	62.1	19
Show	Algorab	12299-1631	SHJ 145	AB	216	24.2	38
Show		12299-1631	LAF 46	BC	88	6.7	38
Show		12299-1631	LAF 46	BD	100	8.3	38
Show		12299-1631	LAF 46	BE	124	10.2	38
Show		12346-1550	LDS4229		340	15.3	43
Show		12339-1659	GWP1827		354	69.2	55
Show		12334-1520	GWP1826		82	31.9	56
Show		12283-1548	MEL 7		279	0.3	61
Show		12327-1713	GWP1825		108	210.1	63
Show		12357-1650	FIN 368	Aa,Ab	111	0.1	65
Show		12357-1650	HJ 1218	AB	260	11.5	65
Show		12366-1623	RST3800		215	5.1	66
Show		12280-1539	TDS 664		118	2.0	68
Show		12277-1546	TOK 558	AB	200	999.9	69
Show		12272-1551	KPP1558		338	11.8	74
Show		12284-1512	TDS8399		113	0.5	80
Show		12260-1632	UC 2335		190	32.0	91
Show		12373-1703	LDS 414	AB	212	78.8	92
Show		12373-1703	LDS 414	Ba,Bb	36	0.9	92
Show		12314-1748	HU 467		127	1.0	97
Show		12392-1541	UC 2378		40	37.7	108
Show		12254-1705	LDS5751		318	28.5	110
Show		12248-1650	GWP1803		325	22.9	112
Show		12260-1457	BU 606		289	0.6	116
Show		12342-1812	LV 5		303	0.9	124
Show		12345-1413	UC 2361		115	20.7	125
Show		12335-1814	RST2804		309	0.5	125
Show		12385-1742	TDS8467		75	0.6	129
Show		12404-1705	CVR 129		173	26.0	131
Show		12368-1812	UC 2372		192	9.9	139
Show		12226-1639	UC 2326		158	10.0	139
Show		12421-1634	GWP1848		46	73.7	147
Show		12230-1739	LDS4204		15	175.2	158
Show		12276-1836	HU 466		212	2.8	159
Show		12376-1353	HJ 2615		293	10.8	161
Show		12303-1331	RST3795		201	1.7	163
Show		12399-1811	RST2808		16	3.0	164
Show		12386-1832	HU 468	AB	313	1.4	170
Show		12301-1324	BU 28	AB	349	2.1	171
Show		12301-1324	LV 19	AC	303	71.3	171
Show		12301-1324	LV 19	AD	166	71.2	171
Show		12440-1615	TSN 163		85	0.3	172
Show		12285-1856	NSN 105		29	1.0	172
Show		12397-1357	SLW 751		154	168.9	175
Show		12266-1336	HJ 2611		221	13.5	176
Show		12344-1907	RST3799		217	1.2	179
Show		12222-1815	UC 2325		272	42.9	188
Show		12369-1310	GWP1836		7	11.4	196
Show		12254-1320	RST3788	AB	310	2.7	197

WDS 12321-1612 : COMPONENTS

	A
B	pa=255.7° sep=12.44"

12321-1612 A

Componente originario normalizzato	AB	Name	Eta Crv	Coord arcsec 2000	123204.22-161145.6	Mag	3.4
Spectral class	F2V (yellow-white)	PmRA	-424.00	PmDE	-58.0	SAO	157345
HIP	61174	Tycho2	6103-02394-1	HD	109085	HR	4775
GC	17087	BD	BD-15 3489	Bayer	Eta Corvi	Bayer name	Eta
Flamsteed	8 Corvi	Flamsteed name	8 Crv

Tycho2

Tycho2	6103-02394-1	Pflag		RAmdeg	188.01761108	DEmdeg	-16.19600226
PmRA	-424.9	PmDE	-57.2	E RAmdeg	3	E DEmdeg	4
E pmRA	1.0	E pmDE	1.0	EpRAm	1991.54	EpDEm	1991.15
Num	15	Q RAmdeg	1.0	Q DEmdeg	1.5	Q pmRA	1.1
Q pmDE	1.6	BTmag	4.728	E BTmag	0.014	VTmag	4.338
E VTmag	0.009	Prox	999	TYC	T	HIP	61174
CCDM		RAdeg	188.01863111	DEdeg	-16.19586583	EpRA 1990	1.70
EpDE 1990	1.40	E RAdeg	3.2	E DEdeg	3.5	Posflg
Corr	0.2

SAO

SAO	157345	DelFlag		RA1950		PmRA1950	-0.0298
DE1950		PmDE1950	-0.066	Vmag	4.4	SpType	F0
Double code		Source	70	CatNum	17087	DM	BD-15 3489
DMcomp		BDsup		HD	109085	M HD	0
GC	17087	RA1950rad	3.27026422	DE1950rad	-0.27784584	PmRA2000	-0.0296
PmDE2000	-0.061

Hipparcos

Catalog	H	HIP	61174	Proxy		RAhms	12 32 04.48
DEdms	-16 11 45.1	Vmag	4.3	VarFlag		R Vmag	G
RAdeg	188.019	DEdeg	-16.1959	AstroRef		Plx	54.92
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	109085	BD	BD-15 3489
CD		CP		Dm number	-15 3489	VIred	0.44
SpType	F2V	R SpType		Coord arcsec 2000	123204.48-161145.1

Hipparcos 2

HIP	61174	Sn	5	So	0	Nc	1
RArad	3.2815451373	DErad	-0.2826711778	Plx	54.7	PmRA	-425.17
PmDE	-57.23	E RArad	0.16	E DErad	0.11	E Plx	0.17
E pmRA	0.16	E pmDE	0.1	Hpmag	4.3853	E Hpmag	0.0005
SHp	0.005	VA	0	BV	0.388	E BV	0.014
VI	0.44

12321-1612 B

Componente originario normalizzato	AB		Coord arcsec 2000	123203.38-161148.7		Mag	19.2		Calc delta mag	15.8
Calc coord	yes