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Current system

20148+1616
CHE 237

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

20148+1616 CHE 237

20^h 14^m 49.53^s +16° 16' 30.4" P.A. 219.00 sep 21.8 mag 13.30,14.22

Coord 2000	20148+1616		Discov num	CHE 237		Comp			Coord arcsec 2000	20 14 49.53 +16 16 30.4
Date first	1910		Date last	2015		Obs	7
Pa first	220		Pa last	219		P.A. Now (θ)	219°
Sep first	22.0		Sep last	21.8		Sep. Now (ρ)	21.8"
Mag pri	13.30		Mag sec	14.22		delta mag (ΔM)	0.92		Spectral class
Pri motion ra	-047		Sec motion ra	+072
Pri motion dec	+024		Sec motion dec	+043
Notes

rPM=1.437

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

218.6

Precise sep

21.781

Constellation

Sagitta

Gaia DR2

1808651964337545728

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20148+1616	CHE 237		1910	1	220	22.0	10.30	11.50			201449.59+161631.9
20148+1616	CHE 237		2008	2	219	21.9	10.30	11.50			201449.59+161631.9
20148+1616	CHE 237		2010	6	219	22.4	13.30	14.22			201449.53+161630.4
20148+1616	CHE 237		2015	7	219	21.8	13.30	14.22			201449.53+161630.4

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