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Current system

00180-0102
GRV 973

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

00180-0102 GRV 973

00^h 18^m 35.66^s -01° 02' 08.2" P.A. 163.00 sep 23.0 mag 15.70,17.50

Coord 2000	00180-0102		Discov num	GRV 973		Comp			Coord arcsec 2000	00 18 35.66 -01 02 08.2
Date first	1998		Date last	2015		Obs	6
Pa first	163		Pa last	163		P.A. Now (θ)	163°
Sep first	23.1		Sep last	23.0		Sep. Now (ρ)	23"
Mag pri	15.70		Mag sec	17.50		delta mag (ΔM)	1.8		Spectral class
Pri motion ra	+015		Sec motion ra	+015
Pri motion dec	-016		Sec motion dec	-017
Notes

rPM=0.044 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

163.2

Precise sep

23.031

Constellation

Hydra

Gaia DR2

2542101124283860608

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00180-0102	GRV 973		2000	2	163	23.0	15.70	17.50		D	001835.66-010208.2
00180-0102	GRV 973		2010	4	163	23.3	15.70	17.50			001835.66-010208.2
00180-0102	GRV 973		2015	5	163	23.0	15.70	17.50			001835.66-010208.2

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