You're not logged.

Login

Filter only those doubles you can observe? Yes, you can!
Register here

Search

Actions

Advanced Search
Go to Simbad
New report
New measure
Login

Computed Lists

Populars
Latest Populars
Doubles in session

Current system

20158+4233
ES 1567

Selections

Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20158+4233 ES 1567

20^h 15^m 50.83^s +42° 33' 30.8" P.A. 182.00 sep 2.4 mag 10.74,11.39

Coord 2000	20158+4233		Discov num	ES 1567		Comp			Coord arcsec 2000	20 15 50.83 +42 33 30.8
Date first	1916		Date last	2018		Obs	8
Pa first	177		Pa last	182		P.A. Now (θ)	182°
Sep first	2.0		Sep last	2.4		Sep. Now (ρ)	2.4"
Mag pri	10.74		Mag sec	11.39		delta mag (ΔM)	0.65		Spectral class
Pri motion ra	+012		Sec motion ra	+012
Pri motion dec	+070		Sec motion dec	+070
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	181.8		Precise sep	2.391		Constellation	Cygnus		Tycho2	3159-01167-1
Gaia DR2	2080706600297871488

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20158+4233	ES 1567		1991	4	184	2.2	10.74	11.39			201550.83+423330.8
20158+4233	ES 1567		2015	5	182	2.3	10.74	11.39			201550.83+423330.8
20158+4233	ES 1567		2018	6	182	2.4	10.74	11.39			201550.83+423330.8

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