12199-0040 MCA 37 (Zaniah)

12^h 19^m 54.39^s -00° 40' 00.3" P.A. 322.40 sep 0.1 mag 3.89,5.90 Sp A2IV dist. 81.37 pc (265.43 l.y.)

Coord 2000	12199-0040	Discov num	MCA 37	Comp		Coord arcsec 2000	12 19 54.39 -00 40 00.3
Date first	1976	Date last	2020	Obs	93
Pa first	152	Pa last	297	P.A. Now (θ)	322.4°
Sep first	0.1	Sep last	0.1	Sep. Now (ρ)	0.12"
Mag pri	3.89	Mag sec	5.90	delta mag (ΔM)	2.01	Spectral class	A2IV (white)
Pri motion ra	-063	Sec motion ra
Pri motion dec	-018	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	296.6	Precise sep	0.096	Common name	Zaniah	Meaning	angle
Constellation	Virgo	SAO	138721	HIP	60129	HD	107259
HR	4689	GC	16813	Bayer	Eta Virginis	Bayer name	Eta Vir
Flamsteed	15 Virginis	Flamsteed name	15 Vir	Distance	81.37	Distance ly	265.43
last precise pa	296.6	last precise sep	0.096

ORBITAL ELEMENTS

Period (P)	13.1y	Periastron (T)	1990.2y	Semi-major axis (a)	0.135a
Eccentricity (e)	0.08	Inclination (i)	50°	Longitude of periastron (ω)	4°
Node (Ω)	173°	Note		Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000	Last observation

label	rho	theta
2000	0.088	74.0
2001	0.092	115.5
2002	0.112	146.7
2003	0.124	169.3
2004	0.117	190.8
2005	0.097	218.7
2006	0.086	258.7
2007	0.099	298.3
2008	0.124	324.5
2009	0.142	342.5
2010	0.145	357.9
2011	0.133	14.3
2012	0.109	36.2
2013	0.089	69.9
2014	0.091	111.7
2015	0.110	144.1
2016	0.124	167.2
2017	0.119	188.5
2018	0.100	215.4
2019	0.086	254.3
2020	0.097	294.9
2021	0.121	322.4
2022	0.141	340.9
2023	0.145	356.3
2024	0.134	12.5
2025	0.112	33.6
2026	0.090	65.9
2027	0.089	107.7
2028	0.108	141.4
2029	0.123	165.1
2030	0.120	186.3

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
12199-0040	MCA 37		2008	81	333	0.1	3.89	5.90	A2IV	NOD	121954.39-004000.3
12199-0040	MCA 37		2017	88	195	0.1	3.89	5.90	A2IV	NO	121954.39-004000.3
12199-0040	MCA 37		2018	90	253	0.1	3.89	5.90	A2IV	NO	121954.39-004000.3
12199-0040	MCA 37		2019	92	272	0.1	3.89	5.90	A2IV	NO	121954.39-004000.3

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

WDS 12199-0040 MCA 37 - ZANIAH : NOTES

discov_num	notes	refcode
MCA 37	eta Vir = 15 Vir = Zaniah. A spectroscopic and occultation binary now
	resolved by speckle interferometry.
	Observed parallax corroborates closely the orbital value given by
	Hartkopf et al. (1992). Primary is 72d SB2 (#718 in Batten et al.,	Hrt1992a
	1989). This is not the SB2 because the observed angular separations	Bte1989
	are much larger than the 12 mas maximum predicted by Halbwachs (1981)	HJL1981
	from the spectroscopic elements. See discussion in Balega et al.	Bag1984b
	(1984), who give preliminary orbital elements based entirely on
	speckle observations.
	1985.2053, 1985.2491: These measures agree well with the preliminary
	orbit of Balega et al. (1984), who adopted a period of 13 years. The
	orbit proposed by Tokovinin (1984) with P = 9.8 years fails to fit the	Tok1984
	speckle observations.	Bnu1986
	See Baize & Petit (1989) catalog of doubles with variable component.	Baz1989d
	A new speckle/spectroscopic orbit of the early A type triple system
	eta Vir has been determined by Hartkopf et al. (1992).	Hrt1992a
	Martin et al. (1998) derive component masses 6.009 +/- 2.164 and
	0.673 +/- 0.800 Msun.	Mig1998

REFERENCES

refcode	metd	author	reference
Bag1984b	S j	Balega, Y.Y., Bonneau, D., & Foy, R	1984A&AS...57...31B
Bag1984b		A&AS 57, 31, 1984
Baz1989d	-	Baize, P. & Petit, M.	1989A&AS...77..497B
Baz1989d		A&AS 77, 497, 1989
Bnu1986	S j	Bonneau, D., Balega, Y., Blazit, A, Foy, R., Vakili, F., & Vidal, J.L.	1986A&AS...65...27B
Bnu1986		A&AS 65, 27, 1986
Bte1989	-	Batten, A.H. & Fletcher, J.M.	1989PDAO...17....1B
Bte1989		Eighth Catalogue of the Orbital Elements of Spectroscopic Binary Systems; 89
Bte1989		Pub. DAO 17, 1, 19
HJL1981	-	Halbwachs, J.L.	1981A&AS...44...47H
HJL1981		A&AS 44, 47, 1981
Hrt1992a	orb -	Hartkopf, W.I., McAlister, H.A., Yang, X., & Fekel, F.C.	1992AJ....103.1976H
Hrt1992a		AJ 103, 1976, 1992
Mig1998	orb -	Martin, Ch., Mignard, F., Hartkopf, W.I., & McAlister, H.A.	1998A&AS..133..149M
Mig1998		A&AS 133, 149, 1998
Sod1999	orb -	Soderhjelm, S.	1999A&A...341..121S
Sod1999		A&A 341, 121, 1999
Tok1984	orb -	Tokovinin, A.A.	1984SvAL...10..121T
Tok1984		SvAL 10, 121, 1984

DISCOVERER

discov	author
MCA	McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C.
MCA	Lu, P.K., Demarque, P., van Altena, W., McAlister, H.A., & Hartkopf, W.I.
MCA	McAlister, H.A., Mason, B.D., Hartkopf, W.I., & Shara, M.M.
MCA	McAlister, H.A.
MCA	McAlister, H.A. & DeGioia, K.A.
MCA	McAlister, H.A. & Hartkopf, W.I.
MCA	McAlister, H.A., Hartkopf, W., Hutter, D., Shara, M., & Franz, O.
MCA	McAlister, H.A., Hartkopf, & Franz, O.G.
MCA	McAlister, H.A., Mason, B.D., Hartkopf, W.I., Roberts, L.C., Jr., & Shara, M.M.
MCA	McAlister, H.A. & Fekel, F.C.
MCA	McAlister, H.A., Hartkopf, W.I., Hendry, E.M., Gaston, B.J., & Fekel, F.C.
MCA	McAlister, H.A., Hartkopf, W.I., Bagnuolo, W.G., Sowell, J.R., Franz, O.G., &
MCA	McAlister, H.A. & Hendry, E.M.
MCA	McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G.
MCA	McAlister, H.A., Hartkopf, W.I., & Mason, B.D.
MCA	Fu, H.-H., Hartkopf, W.I., Mason, B.D., McAlister, H.A., Dombrowski, E.G., &
MCA	McAlister, H.A., Hartkopf, W.I., Sowell, J.R., Dombrowski, E.G., & Franz, O.G.
MCA	Al-Shukri, A.M., McAlister, H.A., Hartkopf, W.I., Mason, B.D., & Franz, O.G.

WDS 12199-0040 MCA 37 - ZANIAH : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 12199-0040 MCA 37 - ZANIAH : MEASURES

No records found.

WDS 12199-0040 MCA 37 - Zaniah : Virtual Eyepiece

Radius:

WDS 12199-0040 MCA 37 - Zaniah : Aladin DSS image @ 12^h 19^m 54.39^s -00° 40' 00.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9

WDS 12199-0040 MCA 37 - ZANIAH : 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	sep	pa	dist(')
Show	Zaniah	12199-0040	MCA 37		0.12	322.40
Show		12204+0035	RST5366		0.90	15	10
Show		12190+0022	GRV1076		10.90	139	18
Show		12203-0009	OCC 15		0.10		32
Show		12213-0014	GWP1794		66.40	352	34
Show		12190+0005	GRV1075		15	138	35
Show		12225+0053	GRV1199		22.20	330	42
Show		12170-0020	SLW 703		132.90	48	48
Show		12218+0119	SHN 155		0.60		49
Show		12177+0002	A 2582		0.40	67	51
Show		12179+0126	SHN 22		0.10	175	56
Show		12234+0020	GWP1800		14.20	303	57
Show		12157+0051	HJ 1214	AB	13	337	64
Show		12157+0051	HJ 1214	AC	18.20	180	64
Show		12157+0051	ABH 77	AD	28.10	343	64
Show		12162-0003	CVR1419		3.30	46	67
Show		12240+0015	SLW 715		25.70	342	67
Show		12244+0022	SLW 718		9.60	239	70
Show		12153-0022	SLW 700		24	156	71
Show		12156+0011	GWP1776		37.10	116	71
Show		12246+0026	UC 2331		21.80	155	72
Show		12149-0051	BAL 867		6.60	357	76
Show		12171+0143	A 2487		2	177	76
Show		12248+0111	UC 2332		42.70	122	81
Show		12228+0151	LDS2879		67.20	289	82
Show		12227+0150	RAO 277		0.60	110	82
Show		12152+0124	CVR1414		3.70	124	84
Show		12198+0209	SHN 154		0.70		89
Show		12250+0123	GRV 855		43.50	16	90
Show		12257-0017	OCC 104		0.10		90
Show		12199+0215	RAO 275		0.30	258	95
Show		12152+0151	BAL1884		4.40	323	100
Show		12266+0045	BAL1452		2.60	57	101
Show		12267+0008	CVR1433		4.50	213	107
Show		12268-0011	AGC 4		0.63	149.20	107
Show		12268+0007	SLW 722		144.60	287	109
Show		12122+0013	SLW 694		26.80	133	119
Show		12120+0015	ZHN 20		250.80	359	122
Show		12227+0238	BAL2389		2.80	106	126
Show		12247+0225	AG 177	AB	7.30	221	128
Show		12247+0225	AG 177	AC	96.30	57	128
Show		12097+0154	BUP 138		48	99	132
Show		12287-0035	UC 2346		24.90	278	132
Show		12210-0131	BAL 868		6.60	135	133
Show		12287-0025	GWP1817		86.80	139	133
Show		12228+0246	UC 171		40.80	53	134
Show		12191+0257	STF1629		24.70	299	138
Show		12190-0138	HJ 206		18.30	118	139
Show		12175+0253	UC 2309		29.70	294	139
Show		12100-0020	GRV1072		11.10	47	139
Show		12205-0140	SLW 710		173.60	350	141

12199-0040 : COMPONENTS

	A
B	pa=296.6° sep=0.10"

12199-0040 A

Common name	Zaniah	Meaning	angle	Coord arcsec 2000	121954.39-004000.3	Mag	3.89
Spectr	A2IV	PmRA	-63.0	PmDE	-18.0	SAO	138721
HIP	60129	HD	107259	HR	4689	GC	16813
DM	BD+00 2926	Bayer	Eta Vir	Flamsteed	15 Vir

SAO

SAO	138721	DelFlag		RA1950		PmRA1950	-0.0043
DE1950		PmDE1950	-0.022	Vmag	4	SpType	A0
CatNum	460	Dm number		HD	107259	M HD	0
GC	16813	RA1950rad	3.21727891	DE1950rad	-0.00679053	PmRA2000	-0.0041
PmDE2000	-0.018

Hipparcos

Catalog	H	HIP	60129	Proxy		RAhms	12 19 54.39
DEdms	-00 40 00.3	Vmags		VarFlag		RAdeg	184.977
DEdeg	-0.666747	AstroRef		Plx	13.06	MultiFlag
Source		Qual		M HIP		Theta
Rho		HD	107259	BD	BD+00 2926	CD
CP		VIred	0.03	SpType	A2IV	R SpType

Hipparcos 2

HIP	60129	Sn	7	So	1	Nc	1
RArad	3.2284512488	DErad	-0.0116369299	Plx	12.29	PmRA	-57.58
PmDE	-25.19	E RArad	0.43	E DErad	0.27	E Plx	0.45
E pmRA	0.47	E pmDE	0.48	Hpmag	3.8992	E Hpmag	0.0005
SHp	0.004	VA	0	BV	0.026	E BV	0.003
VI	0.03

12199-0040 B

Coord arcsec 2000	121954.38+004000.3	Mag	5.9	PmRA	-63.0	PmDE	-18.0
SAO	138721	HIP	60129	HD	107259	HR	4689
GC	16813	Flamsteed	15 Vir