00320+2740 COU 547

00^h 32^m 00.65^s +27° 39' 44.1" P.A. 63.50 sep 0.1 mag 8.90,9.10 Sp G0V

Coord 2000	00320+2740	Discov num	COU 547	Comp		Coord arcsec 2000	00 32 00.65 +27 39 44.1
Date first	1970	Date last	2018	Obs	39
Pa first	222	Pa last	36	P.A. Now (θ)	63.5°
Sep first	0.2	Sep last	0.1	Sep. Now (ρ)	0.11"
Mag pri	8.90	Mag sec	9.10	delta mag (ΔM)	0.2	Spectral class	G0V (yellow)
Pri motion ra	+079	Sec motion ra
Pri motion dec	+012	Sec motion dec
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	36.2	Precise sep	0.14	Constellation	Hydra	SAO	74069
Tycho2	1737-02134-1	Gaia DR2	2856104259148838016	HD	2854	last precise pa	36.2
last precise sep	0.14

ORBITAL ELEMENTS

Period (P)	265y	Periastron (T)	1984.9y	Semi-major axis (a)	0.322a
Eccentricity (e)	0.737	Inclination (i)	79.9°	Longitude of periastron (ω)	295.9°
Node (Ω)	31.7°	Note		Grade	5	(1=Definitive, 9=Indet.)
Equinox	2000	Last observation	2007

label	rho	theta
2000	0.139	40.8
2001	0.139	41.7
2002	0.139	42.6
2003	0.138	43.4
2004	0.137	44.3
2005	0.136	45.2
2006	0.135	46.1
2007	0.134	47.0
2008	0.132	48.0
2009	0.130	49.0
2010	0.129	50.0
2011	0.127	51.0
2012	0.125	52.0
2013	0.123	53.1
2014	0.120	54.3
2015	0.118	55.4
2016	0.116	56.7
2017	0.114	57.9
2018	0.112	59.2
2019	0.109	60.6
2020	0.107	62.0
2021	0.105	63.5
2022	0.102	65.1
2023	0.100	66.7
2024	0.098	68.4
2025	0.096	70.2
2026	0.094	72.0
2027	0.092	74.0
2028	0.090	76.0
2029	0.088	78.1
2030	0.086	80.3

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
00320+2740	COU 547		1997	33	41	0.2	8.90	9.10	G0V		003200.65+273944.1
00320+2740	COU 547		2007	34	247	0.2	8.90	9.10	G0V		003200.65+273944.1

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

WDS 00320+2740 COU 547 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Zir2010b	orb -	Zirm, H.	2010IAUDS.172....1Z
Zir2010b		Inf. Circ. 172, 1, 2010

DISCOVERER

WDS 00320+2740 COU 547 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 00320+2740 COU 547 : MEASURES

No records found.

WDS 00320+2740 COU 547 : Virtual Eyepiece

Radius:

WDS 00320+2740 COU 547 : Aladin DSS image @ 00^h 32^m 00.65^s +27° 39' 44.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9

WDS 00320+2740 COU 547 : 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		00320+2740	COU 547		0.11	63.50	1
Show		00343+2734	CBL 581		38.20	322	31
Show		00334+2710	CVR 332		28.10	284	36
Show		00328+2817	STT 14	AB	8.60	159	39
Show		00328+2817	STT 14	AC	58.20	88	39
Show		00328+2817	FYM 205	AD	26	177	39
Show		00340+2810	LDS3179		26	47	41
Show		00296+2807	WSI 38	AB	4.30	280	45
Show		00296+2807	HAU 1	AC	10.30	27	45
Show		00296+2807	HAU 1	BC	12.20	47	45
Show		00355+2724	LDS 866		8.60	281	48
Show		00343+2700	CVR 13		24	303	51
Show		00320+2831	S 386	AB	43.40	17	51
Show		00320+2831	FYM 206	AC	14	50	51
Show		00356+2810	HAU 8	AB	10.20	272	60
Show		00357+2821	DAM1274		13.50	86	64
Show		00310+2839	CTU 1	Aa,Ab	0.90	224	64
Show		00310+2839	HAU 2	AB	12.40	279	64
Show		00289+2651	BRT 118		5.20	195	65
Show		00310+2844	GII 74		1.30	54	66
Show		00361+2821	SKF 221		1.40	214	68
Show		00373+2742	CVR 341		8.20	65	71
Show		00373+2718	BU 230		3.90	325	75
Show		00349+2627	COU 548		0.20	170	83
Show		00257+2755	GRV 22		52.60	273	85
Show		00339+2615	HJ 1034		4.70	265	88
Show		00252+2743	CHE 26		18.60	232	91
Show		00262+2827	COU 446		0.90	313	91
Show		00250+2726	CHE 24		4.90	339	94
Show		00331+2915	AZC 4		26.50	72	96
Show		00247+2740	LDS3164		113.20	304	98
Show		00391+2704	AZC 5		11.70	354	102
Show		00259+2638	CVR1041	AB	4.40	233	103
Show		00243+2731	CHE 21		18.70	159	103
Show		00397+2803	LDS 867		102.10	135	103
Show		00250+2653	CHE 25		24.10	81	105
Show		00359+2914	ES 314	AB	7.60	202	108
Show		00359+2914	TOK 445	AC	999.90	50	108
Show		00310+2550	NSN 507		1	7	110
Show		00310+2551	SLW 24		21.30	127	110
Show		00398+2818	LDS3187		19.50	351	110
Show		00337+2932	HJ 1032		13.20	247	112
Show		00237+2702	CHE 20		17.40	210	115
Show		00241+2652	TDS1441		0.50	137	116
Show		00235+2709	CHE 18		7.50	13	118
Show		00408+2735	GRV 37		58.20	340	118
Show		00232+2710	CHE 16		18.80	264	121
Show		00230+2735	TDS 16		1.40	121	121
Show		00378+2913	ES 315		2.30	87	121
Show		00375+2604	GRV 32		58	208	121
Show		00243+2634	CHE 22		22.60	261	122

00320+2740 : COMPONENTS

	A
B	pa=33.0° sep=0.13"

00320+2740 A

Coord arcsec 2000	003200.65+273944.1	Mag	8.9	Spectr	G0V	PmRA	79.0
PmDE	12.0	SAO	74069	Tycho2	1737-02134-1	Gaia DR2	2856104259148838016
HD	2854	Dm number	+26 72

Tycho2

TYCHO2	1737-02134-1	Pflag		RAmdeg	8.00273343	DEmdeg	27.66226071
PmRA	74.4	PmDE	-8.1	E RAmdeg	10	E DEmdeg	11
E pmRA	1.3	E pmDE	1.2	EpRAm	1990.46	EpDEm
Num	10	Q RAmdeg	1.9	Q DEmdeg	1.7	Q pmRA	1.9
Q pmDE	1.6	BTmag	9.449	E BTmag	0.022	VTmag	8.847
E VTmag	0.018	Prox	999	TYC	T	HYP
CCDM		RAdeg	8.00253917	DEdeg	27.66227944	EpRA 1990	1.73
EpDE 1990	1.63	E RAdeg	9.7	E DEdeg	12.1	Posflg
Corr	-0.1

SAO

SAO	74069	DelFlag		RA1950		PmRA1950	0.0065
DE1950		PmDE1950	-0.005	Vmag	8.5	SpType	G5
CatNum	289	Dm number		HD	2854	M HD	0
GC		RA1950rad	0.1281361	DE1950rad	0.47798367	PmRA2000	0.0065
PmDE2000	-0.011

00320+2740 B

Coord arcsec 2000	003200.66+273944.2		Mag	9.1		PmRA	79.0		PmDE	12.0
SAO	74069		HD	2854