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

20306+2158
BRT2478

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.

20306+2158 BRT2478

20^h 30^m 34.04^s +21° 57' 43.2" P.A. 297.00 sep 3.6 mag 9.90,10.00

Coord 2000	20306+2158		Discov num	BRT2478		Comp			Coord arcsec 2000	20 30 34.04 +21 57 43.2
Date first	1892		Date last	2015		Obs	16
Pa first	299		Pa last	297		P.A. Now (θ)	297°
Sep first	3.3		Sep last	3.6		Sep. Now (ρ)	3.6"
Mag pri	9.90		Mag sec	10.00		delta mag (ΔM)	0.1		Spectral class
Pri motion ra	+008		Sec motion ra	+001
Pri motion dec	-006		Sec motion dec	-005
Notes	N (See Notes)

rPM=0.707

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

297.1

Precise sep

3.553

Constellation

Vulpecula

Gaia DR2

1818652636761590016

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20306+2158	BRT2478		2000	8	297	3.5	9.90	10.00		N	203034.04+215743.2
20306+2158	BRT2478		2010	9	297	3.5	9.90	10.00		N	203034.04+215743.2
20306+2158	BRT2478		2011	10	297	3.6	9.90	10.00		N	203034.04+215743.2
20306+2158	BRT2478		2013	15	297	3.5	9.90	10.00		N	203034.04+215743.2
20306+2158	BRT2478		2015	16	297	3.6	9.90	10.00		N	203034.04+215743.2

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