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20170-5839
HDS2892

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

20170-5839 HDS2892

20^h 16^m 57.69^s -58° 39' 19.2" P.A. 350.00 sep 0.1 mag 9.92,10.34 Sp G5V dist. 138.89 pc (453.06 l.y.)

Coord 2000	20170-5839		Discov num	HDS2892		Comp			Coord arcsec 2000	20 16 57.69 -58 39 19.2
Date first	1991		Date last	2020		Obs	6
Pa first	311		Pa last	350		P.A. Now (θ)	350°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.1"
Mag pri	9.92		Mag sec	10.34		delta mag (ΔM)	0.42		Spectral class	G5V (yellow)
Pri motion ra	-016		Sec motion ra
Pri motion dec	-029		Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	350		Precise sep	0.064		Constellation	Pavo		SAO	246512
HIP	99977		Tycho2	8789-00341-1		Gaia DR2	6468301531817761408		HD	192255
CP	CP-59 7601		Distance	138.89		Distance ly	453.06

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20170-5839	HDS2892		1991	1	311	0.2	9.92	10.34	G5V		201657.69-583919.2
20170-5839	HDS2892		2014	2	321	0.1	9.92	10.34	G5V		201657.69-583919.2
20170-5839	HDS2892		2017	3	329	0.1	9.92	10.34	G5V		201657.69-583919.2
20170-5839	HDS2892		2018	4	333	0.1	9.92	10.34	G5V		201657.69-583919.2
20170-5839	HDS2892		2019	5	339	0.1	9.92	10.34	G5V		201657.69-583919.2

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