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Current system

20000-0439
J 1692

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

20000-0439 J 1692

19^h 59^m 55.54^s -04° 39' 29.3" P.A. 24.00 sep 7.2 mag 11.70,12.10

Coord 2000	20000-0439		Discov num	J 1692		Comp			Coord arcsec 2000	19 59 55.54 -04 39 29.3
Date first	1897		Date last	2015		Obs	10
Pa first	29		Pa last	24		P.A. Now (θ)	24°
Sep first	6.4		Sep last	7.2		Sep. Now (ρ)	7.2"
Mag pri	11.70		Mag sec	12.10		delta mag (ΔM)	0.4		Spectral class
Pri motion ra	+008		Sec motion ra	+012
Pri motion dec	-011		Sec motion dec	+002
Notes

rPM=1

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

23.7

Precise sep

7.16

Constellation

Hydra

Gaia DR2

4221238890969666176

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20000-0439	J 1692		1941	2	40	5.0	11.70	12.10			195955.54-043929.3
20000-0439	J 1692		2000	3	24	7.0	11.70	12.10			195955.54-043929.3
20000-0439	J 1692		2015	6	24	7.2	11.70	12.10			195955.54-043929.3

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