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20112+3710
SEI 964

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

20112+3710 SEI 964

20^h 11^m 11.67^s +37° 10' 14.4" P.A. 108.00 sep 21.1 mag 11.21,12.27

Coord 2000	20112+3710		Discov num	SEI 964		Comp			Coord arcsec 2000	20 11 11.67 +37 10 14.4
Date first	1896		Date last	2015		Obs	12
Pa first	108		Pa last	108		P.A. Now (θ)	108°
Sep first	21.2		Sep last	21.1		Sep. Now (ρ)	21.1"
Mag pri	11.21		Mag sec	12.27		delta mag (ΔM)	1.06		Spectral class
Pri motion ra	+003		Sec motion ra	+000
Pri motion dec	-001		Sec motion dec	-002
Notes

rPM=1

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	107.6		Precise sep	21.096		Constellation	Cygnus		Tycho2	2683-01865-1
Gaia DR2	2060762765062338048

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20112+3710	SEI 964		1998	5	108	21.2	11.21	12.51		D	201111.67+371014.4
20112+3710	SEI 964		2002	6	108	21.1	11.21	12.51		D	201111.67+371014.4
20112+3710	SEI 964		2010	7	108	21.0	11.21	12.27			201111.67+371014.4
20112+3710	SEI 964		2015	8	108	21.1	11.21	12.27			201111.67+371014.4

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