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Doubles in session

Current system

19527+0251
BAL2010

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

19527+0251 BAL2010

19^h 52^m 41.14^s +02° 51' 15.1" P.A. 10.00 sep 16.0 mag 11.90,12.10

Coord 2000	19527+0251		Discov num	BAL2010		Comp			Coord arcsec 2000	19 52 41.14 +02 51 15.1
Date first	1909		Date last	2015		Obs	9
Pa first	13		Pa last	10		P.A. Now (θ)	10°
Sep first	19.5		Sep last	16.0		Sep. Now (ρ)	16"
Mag pri	11.90		Mag sec	12.10		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	-013		Sec motion ra	-009
Pri motion dec	-022		Sec motion dec	-034
Notes

rPM=0.36

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

10.3

Precise sep

16

Constellation

Aquila

Gaia DR2

4241858032520591488

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19527+0251	BAL2010		1909	1	13	19.5	11.90	12.10			195241.14+025115.1
19527+0251	BAL2010		1999	2	11	16.6	11.90	12.10			195241.14+025115.1
19527+0251	BAL2010		2000	3	11	16.5	11.90	12.10			195241.14+025115.1
19527+0251	BAL2010		2015	4	10	16.0	11.90	12.10			195241.14+025115.1

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