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Doubles in session

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00186+5433
STI1319

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

00186+5433 STI1319

00^h 18^m 37.36^s +54° 33' 03.0" P.A. 105.00 sep 8.3 mag 10.70,11.60

Coord 2000	00186+5433		Discov num	STI1319		Comp			Coord arcsec 2000	00 18 37.36 +54 33 03.0
Date first	1912		Date last	2015		Obs	9
Pa first	98		Pa last	105		P.A. Now (θ)	105°
Sep first	10.0		Sep last	8.3		Sep. Now (ρ)	8.3"
Mag pri	10.70		Mag sec	11.60		delta mag (ΔM)	0.9		Spectral class
Pri motion ra	-002		Sec motion ra	-009
Pri motion dec	-001		Sec motion dec	-004
Notes

rPM=0.773

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	105.4		Precise sep	8.345		Constellation	Hydra		Tycho2	3657-01759-1
Gaia DR2	419787736993461632

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00186+5433	STI1319		1998	3	105	8.4	10.70	11.60		D	001837.36+543303.0
00186+5433	STI1319		2003	4	105	8.4	10.70	11.60		D	001837.36+543303.0
00186+5433	STI1319		2011	5	105	8.2	10.70	11.60			001837.36+543303.0
00186+5433	STI1319		2015	6	105	8.3	10.70	11.60			001837.36+543303.0

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