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Doubles in session

Current system

19413-1325
HJ 2887

Selections

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Binocular doubles
Binary Systems
Triple Systems
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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19413-1325 HJ 2887

19^h 41^m 21.96^s -13° 25' 34.2" P.A. 236.00 sep 11.6 mag 10.57,10.44

Coord 2000	19413-1325		Discov num	HJ 2887		Comp			Coord arcsec 2000	19 41 21.96 -13 25 34.2
Date first	1831		Date last	2016		Obs	12
Pa first	236		Pa last	236		P.A. Now (θ)	236°
Sep first	8.0		Sep last	11.6		Sep. Now (ρ)	11.6"
Mag pri	10.57		Mag sec	10.44		delta mag (ΔM)	0.13		Spectral class
Pri motion ra	-002		Sec motion ra	-007
Pri motion dec	-012		Sec motion dec	-011
Notes

rPM=0.391

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	236.4		Precise sep	11.599		Constellation	Sagittarius		Tycho2	5736-01421-1
Gaia DR2	4183416416825302400

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19413-1325	HJ 2887		1998	6	237	11.6	10.57	11.30		D	194121.96-132534.2
19413-1325	HJ 2887		2000	7	236	11.5	10.57	11.30		D	194121.96-132534.2
19413-1325	HJ 2887		2010	8	236	11.3	10.57	10.44			194121.96-132534.2
19413-1325	HJ 2887		2016	9	236	11.6	10.57	10.44			194121.96-132534.2

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