You're not logged.

Login

Create your personal custom set of columns with all data you need.
Register here!

Search

Actions

Advanced Search
Go to Simbad
New report
New measure
Login

Computed Lists

Populars
Latest Populars
Doubles in session

Current system

20294+3048
HJ 1521

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.

20294+3048 HJ 1521

20^h 29^m 27.15^s +30° 48' 22.5" P.A. 194.00 sep 15.4 mag 9.71,11.70 Sp F5

Coord 2000	20294+3048		Discov num	HJ 1521		Comp			Coord arcsec 2000	20 29 27.15 +30 48 22.5
Date first	1828		Date last	2015		Obs	12
Pa first	188		Pa last	194		P.A. Now (θ)	194°
Sep first	12.0		Sep last	15.4		Sep. Now (ρ)	15.4"
Mag pri	9.71		Mag sec	11.70		delta mag (ΔM)	1.99		Spectral class	F5 (yellow-white)
Pri motion ra	+020		Sec motion ra	+011
Pri motion dec	-004		Sec motion dec	-006
Notes

rPM=0.452

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	193.8		Precise sep	15.378		Constellation	Cygnus		Tycho2	2685-01874-1
Gaia DR2	1861818471148409088		HD	334431

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20294+3048	HJ 1521		1999	4	193	15.4	9.71	11.70	F5	D	202927.15+304822.5
20294+3048	HJ 1521		2002	6	194	15.3	9.71	11.70	F5	D	202927.15+304822.5
20294+3048	HJ 1521		2013	7	193	15.5	9.71	11.70	F5		202927.15+304822.5
20294+3048	HJ 1521		2015	8	194	15.4	9.71	11.70	F5		202927.15+304822.5

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