You're not logged.

Login

A workbench to forge your own double stars?
Create your account here!

Search

Actions

Advanced Search
Go to Simbad
New report
New measure
Login

Computed Lists

Populars
Latest Populars
Doubles in session

Current system

20163+3924
SEI1051

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.

20163+3924 SEI1051

20^h 16^m 18.85^s +39° 23' 30.2" P.A. 148.00 sep 22.3 mag 10.05,11.47 Sp A2

Coord 2000	20163+3924		Discov num	SEI1051		Comp			Coord arcsec 2000	20 16 18.85 +39 23 30.2
Date first	1892		Date last	2015		Obs	11
Pa first	149		Pa last	148		P.A. Now (θ)	148°
Sep first	22.2		Sep last	22.3		Sep. Now (ρ)	22.3"
Mag pri	10.05		Mag sec	11.47		delta mag (ΔM)	1.42		Spectral class	A2 (white)
Pri motion ra	+003		Sec motion ra	+002
Pri motion dec	+001		Sec motion dec	+002
Notes

rPM=0.447

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	147.7		Precise sep	22.328		Constellation	Cygnus		Tycho2	3155-00956-1
Gaia DR2	2062129389282621440		HD	228681

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20163+3924	SEI1051		1998	4	148	22.4	10.05	11.60	A2	D	201618.85+392330.2
20163+3924	SEI1051		2002	5	148	22.3	10.05	11.60	A2	D	201618.85+392330.2
20163+3924	SEI1051		2010	6	148	22.3	10.05	11.47	A2		201618.85+392330.2
20163+3924	SEI1051		2015	7	148	22.3	10.05	11.47	A2		201618.85+392330.2

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