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Doubles in session

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20140-0403
HJ 909

Selections

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

20140-0403 HJ 909

20^h 13^m 56.38^s -04° 03' 11.0" P.A. 129.00 sep 15.3 mag 11.00,12.07

Coord 2000	20140-0403		Discov num	HJ 909		Comp			Coord arcsec 2000	20 13 56.38 -04 03 11.0
Date first	1827		Date last	2015		Obs	13
Pa first	130		Pa last	129		P.A. Now (θ)	129°
Sep first	9.0		Sep last	15.3		Sep. Now (ρ)	15.3"
Mag pri	11.00		Mag sec	12.07		delta mag (ΔM)	1.07		Spectral class
Pri motion ra	+013		Sec motion ra	+017
Pri motion dec	-006		Sec motion dec	-013
Notes

rPM=0.377

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	129.4		Precise sep	15.261		Constellation	Aquila		Tycho2	5169-00600-1
Gaia DR2	4222224023322338432

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20140-0403	HJ 909		1999	6	130	15.3	11.00	12.07		D	201356.38-040311.0
20140-0403	HJ 909		2000	8	129	15.2	11.00	12.07		D	201356.38-040311.0
20140-0403	HJ 909		2012	9	128	15.3	11.00	12.07			201356.38-040311.0
20140-0403	HJ 909		2015	11	129	15.3	11.00	12.07			201356.38-040311.0

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