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20242+3819
SEI1116

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

20242+3819 SEI1116

20^h 24^m 10.71^s +38° 19' 11.4" P.A. 342.00 sep 30.3 mag 9.16,10.00 Sp A0V

Coord 2000	20242+3819		Discov num	SEI1116		Comp			Coord arcsec 2000	20 24 10.71 +38 19 11.4
Date first	1895		Date last	2015		Obs	20
Pa first	339		Pa last	342		P.A. Now (θ)	342°
Sep first	29.6		Sep last	30.3		Sep. Now (ρ)	30.3"
Mag pri	9.16		Mag sec	10.00		delta mag (ΔM)	0.84		Spectral class	A0V (white)
Pri motion ra	-002		Sec motion ra	+007
Pri motion dec	+001		Sec motion dec	+009
Notes

rPM=1.056

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	341.5		Precise sep	30.338		Constellation	Cygnus		SAO	69966
Tycho2	3152-00350-1		Gaia DR2	2061115948790092672		HD	194447

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20242+3819	SEI1116		2004	12	341	30.6	9.16	10.00	A0V	D	202410.71+381911.4
20242+3819	SEI1116		2012	14	341	30.8	9.16	10.00	A0V	D	202410.71+381911.4
20242+3819	SEI1116		2015	16	341	30.3	9.16	10.00	A0V		202410.71+381911.4

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