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20199-0215
STF2661

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

20199-0215 STF2661

20^h 19^m 52.68^s -02° 14' 51.0" P.A. 341.00 sep 24.4 mag 7.87,9.19 Sp A0 dist. 204.92 pc (668.45 l.y.)

Coord 2000	20199-0215		Discov num	STF2661		Comp			Coord arcsec 2000	20 19 52.68 -02 14 51.0
Date first	1827		Date last	2016		Obs	38
Pa first	345		Pa last	341		P.A. Now (θ)	341°
Sep first	20.0		Sep last	24.4		Sep. Now (ρ)	24.4"
Mag pri	7.87		Mag sec	9.19		delta mag (ΔM)	1.32		Spectral class	A0 (white)
Pri motion ra	+006		Sec motion ra	+005
Pri motion dec	+004		Sec motion dec	+004
Notes	N (See Notes)

rPM=0.139 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	340.5		Precise sep	24.422		Constellation	Aquila		HIP	100246
Tycho2	5166-02698-1		Gaia DR2	4223033573118171136		HD	193330		BD	BD-02 5240
Distance	204.92		Distance ly	668.45

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20199-0215	STF2661		1998	28	340	24.4	7.87	9.19	A0	N D	201952.68-021451.0
20199-0215	STF2661		2008	29	340	24.2	7.87	9.19	A0	N D	201952.68-021451.0
20199-0215	STF2661		2012	34	340	24.4	7.87	9.19	A0	N D	201952.68-021451.0
20199-0215	STF2661		2013	35	341	24.3	7.87	9.19	A0	N	201952.68-021451.0
20199-0215	STF2661		2014	37	340	24.4	7.87	9.19	A0	N	201952.68-021451.0

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