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Doubles in session

Current system

20161+1537
CHE 255

Selections

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Binocular doubles
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20161+1537 CHE 255

20^h 16^m 04.87^s +15° 37' 12.4" P.A. 216.00 sep 24.6 mag 13.50,13.50

Coord 2000	20161+1537		Discov num	CHE 255		Comp			Coord arcsec 2000	20 16 04.87 +15 37 12.4
Date first	1910		Date last	2019		Obs	6
Pa first	219		Pa last	216		P.A. Now (θ)	216°
Sep first	24.8		Sep last	24.6		Sep. Now (ρ)	24.6"
Mag pri	13.50		Mag sec	13.50		delta mag (ΔM)	0		Spectral class
Pri motion ra	-001		Sec motion ra	+005
Pri motion dec	-013		Sec motion dec	-011
Notes

rPM=0.485

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

216.4

Precise sep

24.6

Constellation

Delphinus

Gaia DR2

1808412854916612864

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20161+1537	CHE 255		1910	1	219	24.8	10.45	10.51			201604.88+153712.3
20161+1537	CHE 255		2008	2	212	25.5	10.45	10.51			201604.88+153712.3
20161+1537	CHE 255		2019	6	216	24.6	13.50	13.50			201604.87+153712.4

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