16534-2025 WSI 86 (HD 152311)

16^h 53^m 25.26^s -20° 24' 55.8" P.A. 180.00 sep 0.4 mag 5.90,11.30 Sp G2IV-V dist. 26.94 pc (87.88 l.y.)

Coord 2000	16534-2025	Discov num	WSI 86	Comp		Coord arcsec 2000	16 53 25.26 -20 24 55.8
Date first	2008	Date last	2021	Obs	7
Pa first	167	Pa last	180	P.A. Now (θ)	180°
Sep first	0.4	Sep last	0.382	Sep. Now (ρ)	0.382"
Mag pri	5.90	Mag sec	11.30	delta mag (ΔM)	5.4	Spectral class	G2IV-V (yellow)
Pri motion ra	-058	Sec motion ra
Pri motion dec	-027	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 152311	Constellation	Ophiuchus	SAO	184754	HIP	82621
Tycho2	6226-01945-1	Gaia DR2	4127420626087054976	HD	152311	HR	6269
GC	22731	BD	BD-20 4572	Distance	26.94	Distance ly	87.88

ORBITAL ELEMENTS

Period (P)	14.91y	± 0.25	Periastron (T)	2014.96y	± 0.17	Semi-major axis (a)	0.2697a	± 0.0059
Eccentricity (e)	0.502	± 0.013	Inclination (i)	132°	± 2.3	Longitude of periastron (ω)	26.7°	± 5.9
Node (Ω)	13.1°	± 3	Notes	n		Reference	Tok2020e
Equinox			Last observation			Grade	4	(1=Definitive, 9=Indet.)

label	theta	rho
2000	357.6	0.129
2001	276.4	0.114
2002	229.0	0.196
2003	210.6	0.277
2004	199.8	0.335
2005	191.7	0.371
2006	184.7	0.388
2007	178.0	0.388
2008	171.0	0.372
2009	163.1	0.344
2010	153.4	0.303
2011	140.2	0.253
2012	120.1	0.201
2013	87.8	0.160
2014	43.8	0.148
2015	351.9	0.125
2016	269.7	0.119
2017	226.7	0.204
2018	209.4	0.283
2019	199.0	0.339
2020	191.0	0.373
2021	184.1	0.389
2022	177.4	0.387
2023	170.3	0.370
2024	162.3	0.340
2025	152.4	0.299
2026	138.7	0.248
2027	117.8	0.196
2028	84.2	0.158
2029	39.6	0.148
2030	345.8	0.120

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

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

WDS 16534-2025 WSI 86 (HD 152311) : NOTES

discov_num	notes	refcode
WSI 86	Astrometric binary; dm 2.9 mag, period ~ 10y? Accelerated pm.	Tok2012b

REFERENCES

refcode	metd	author	reference
Tok2012b	S j	Tokovinin, A.	2012AJ....144...56T
Tok2012b	+orb	AJ 144, 56, 2012
Tok2020e	St j	Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P.	2020AJ....160....7T
Tok2020e	+orb	AJ 160, 7, 2020

DISCOVERER

idgroup	discov	author
1	WSI	Douglass, G.G., Hindsley, R.B., & Worley, C.E.
10	WSI	Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
10	WSI	Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
13	WSI	Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
13	WSI	Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
14	WSI	Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
14	WSI	Hennessy, G.S., Platais, I., et al.
15	WSI	Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
15	WSI	Hennessy, G.S., Rafferty, T.J., et al.
42	WSI	Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
42	WSI	C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
52	WSI	Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
52	WSI	M., Kilian, C.M. & Warner, R.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16534-2025	WSI 86		2008	1	167	0.4	5.90	11.30	G2IV-V		165325.26-202455.8
16534-2025	WSI 86		2012	2	110	0.2	5.90	11.30	G2IV-V		165325.26-202455.8
16534-2025	WSI 86		2017	3	37	0.3	5.90	11.30	G2IV-V	N	165325.26-202455.8
16534-2025	WSI 86		2018	4	25	0.3	5.90	11.30	G2IV-V	N	165325.26-202455.8
16534-2025	WSI 86		2019	5	198	0.3	5.90	11.30	G2IV-V	N	165325.26-202455.8
16534-2025	WSI 86		2020	6	190	0.4	5.90	11.30	G2IV-V	N	165325.26-202455.8
16534-2025	WSI 86		2021	7	180	0.4	5.90	11.30	G2IV-V	N	165325.26-202455.8

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

WDS 16534-2025 WSI 86 (HD 152311) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 16534-2025 WSI 86 (HD 152311) : MEASURES

No records found.

WDS 16534-2025 (HD 152311) : 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 16534-2025 (HD 152311) : ALADIN DSS IMAGE @ 16^h 53^m 25.26^s -20° 24' 55.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 16534-2025 WSI 86 (HD 152311) : 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		16534-2025	WSI 86		180	0.4
Show		16545-2100	ARA1120		2	6.3	39
Show		16505-2001	UC 3240		197	45.9	48
Show		16509-1950	B 1830	BC	303	0.1	50
Show		16509-1950	B 1830	AB	59	0.4	50
Show		16519-2120	RSS 419		164	18.1	59
Show		16523-1921	GWP2675		37	83.9	66
Show		16525-1921	TDT 125		137	0.6	66
Show		16539-1919	B 1838		256	0.7	67
Show		16561-1928	KPP4018		166	2.7	69
Show		16571-1932	OCC 940	Ba,Bb	-1	0.0	74
Show		16571-1932	SHJ 240	AB	233	4.4	74
Show		16585-2047	JKS 14		125	12.9	75
Show		16555-2134	BU 241		31	0.3	76
Show		16490-1936	HJ 4888	AB	223	13.5	79
Show		16539-1854	DON 815	AB	221	2.7	91
Show		16539-1854	DON 815	AC	320	9.3	91
Show		16564-1904	GWP2680		53	20.7	92
Show		16475-1945	LDS 571		25	196.6	92
Show		16470-2006	OCC 453		-1	0.1	93
Show		16582-2121	ARA1496		173	12.3	94
Show		16547-2203	BU 123		197	1.4	100
Show		16593-1926	HDS2403		264	0.4	102
Show		17012-2026	HJ 4911	AB	176	96.1	111
Show		17012-2026	HJ 4911	AC	13	11.2	111
Show		17007-2121	OCC9163		-1	0.1	117
Show		16575-2211	BRT1498		121	4.8	121
Show		16447-2029	ARA1119		193	6.4	123
Show		16521-1820	DON 814		84	0.9	125
Show		16578-2216	BRT1499		161	3.5	128
Show		16523-1814	UC 3246		25	109.6	132
Show		16454-1915	ARA 706		92	9.0	134
Show		17003-1854	DVG 45		233	119.9	134
Show		16467-1847	UC 3230		314	11.4	137
Show		16436-2042	HDS2374		171	0.4	139
Show		17005-2208	WIS 308		354	13.3	143
Show		17038-2023	HWE 38		180	5.9	146
Show		16577-1811	ARA 434		153	11.8	147
Show		17040-2028	OCC 43		-1	0.1	149
Show		16492-2243	ARA1812	AB	285	14.0	150
Show		16492-2243	LAF 135	AC	264	1.5	150
Show		16492-2243	LAF 135	AD	28	7.2	150
Show		16492-2243	LAF 135	AE	154	13.2	150
Show		17019-1853	OCC 40		-1	0.1	151
Show		17039-1956	RST3065		341	3.4	152
Show		16426-2030	UC 3214		185	9.2	152
Show		16425-2021	ARA1118		106	9.0	154
Show		17036-1928	HU 1174		76	3.7	155
Show		16423-2011	OCC 645		-1	0.0	158
Show		16423-2010	UC 3212		97	15.3	158
Show		17031-1904	BRT1501		167	3.6	159

WDS 16534-2025 : COMPONENTS

	A
B	pa=180.0° sep=0.38"

16534-2025 A

Componente originario normalizzato	AB	Name	HD 152311	Coord arcsec 2000	165325.26-202455.8	Mag	5.9
Spectral class	G2IV (yellow)	PmRA	-58.00	PmDE	-27.0	SAO	184754
HIP	82621	Tycho2	6226-01945-1	HD	152311	HR	6269
GC	22731	BD	BD-20 4572

Tycho2

Tycho2	6226-01945-1	Pflag		RAmdeg	253.35512253	DEmdeg	-20.41556249
PmRA	-43.3	PmDE	-30.2	E RAmdeg	4	E DEmdeg	4
E pmRA	0.8	E pmDE	0.8	EpRAm	1991.30	EpDEm	1990.99
Num	20	Q RAmdeg	1.5	Q DEmdeg	1.5	Q pmRA	1.5
Q pmDE	1.6	BTmag	6.710	E BTmag	0.014	VTmag	5.936
E VTmag	0.010	Prox	999	TYC	T	HIP	82621
CCDM		RAdeg	253.35522833	DEdeg	-20.41549056	EpRA 1990	1.75
EpDE 1990	1.48	E RAdeg	3.6	E DEdeg	4.0	Posflg
Corr	0.2

SAO

SAO	184754	DelFlag		RA1950		PmRA1950	-0.0036
DE1950		PmDE1950	-0.031	Vmag	5.9	SpType	G5
Double code		Source	70	CatNum	22731	DM	BD-20 4572
DMcomp		BDsup		HD	152311	M HD	0
GC	22731	RA1950rad	4.40898172	DE1950rad	-0.35488875	PmRA2000	-0.0035
PmDE2000	-0.029

Hipparcos

Catalog	H	HIP	82621	Proxy		RAhms	16 53 25.26
DEdms	-20 24 55.8	Vmag	5.86	VarFlag		R Vmag	H
RAdeg	253.355	DEdeg	-20.4155	AstroRef		Plx	35.73
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag	G	Source		Qual		M HIP
Theta		Rho		HD	152311	BD	BD-20 4572
CD		CP		Dm number	-20 4572	VIred	0.74
SpType	G5IV	R SpType		Coord arcsec 2000	165325.26-202455.8

Hipparcos 2

HIP	82621	Sn	7	So	1	Nc	1
RArad	4.4218830638	DErad	-0.3563174934	Plx	37.12	PmRA	-59.57
PmDE	-26.75	E RArad	0.59	E DErad	0.43	E Plx	0.72
E pmRA	0.65	E pmDE	0.52	Hpmag	6.0013	E Hpmag	0.0011
SHp	0.006	VA	0	BV	0.685	E BV	0.004
VI	0.74

16534-2025 B

Componente originario normalizzato	AB		Coord arcsec 2000	165325.26-202456.2		Mag	11.3		Spectral class	V
Calc delta mag	5.4		Calc coord	yes