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23208+2158
STT 494

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

23208+2158 STT 494

23^h 20^m 48.87^s +21° 57' 45.7" P.A. 82.00 sep 3.3 mag 8.19,8.72 Sp F0 dist. 172.71 pc (563.38 l.y.)

Coord 2000	23208+2158		Discov num	STT 494		Comp			Coord arcsec 2000	23 20 48.87 +21 57 45.7
Date first	1828		Date last	2017		Obs	77
Pa first	87		Pa last	82		P.A. Now (θ)	82°
Sep first	2.5		Sep last	3.3		Sep. Now (ρ)	3.3"
Mag pri	8.19		Mag sec	8.72		delta mag (ΔM)	0.53		Spectral class	F0 (yellow-white)
Pri motion ra	-016		Sec motion ra	+001
Pri motion dec	-008		Sec motion dec	-006
Notes

rPM=0.957

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	81.6		Precise sep	3.338		Constellation	Pegasus		HIP	115268
Tycho2	1719-00508-1		Gaia DR2	2837970254389900160		HD	220076		BD	BD+21 4916
Distance	172.71		Distance ly	563.38

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
23208+2158	STT 494		2007	72	82	3.5	8.19	8.72	F0	D	232048.87+215745.7
23208+2158	STT 494		2008	75	81	3.3	8.19	8.72	F0	D	232048.87+215745.7
23208+2158	STT 494		2009	78	82	3.3	8.19	8.72	F0	D	232048.87+215745.7
23208+2158	STT 494		2011	80	81	3.3	8.19	8.72	F0		232048.87+215745.7
23208+2158	STT 494		2016	74	82	3.3	8.19	8.72	F0		232048.87+215745.7
23208+2158	STT 494		2017	76	82	3.3	8.19	8.72	F0		232048.87+215745.7

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