23100+1426 STF 2986 (HD 218687)

Coord 2000	23100+1426		Discov num	STF2986		Comp			Coord arcsec 2000	23 09 57.10 +14 25 35.6
Date first	1829		Date last	2018		Obs	56
Pa first	274		Pa last	269.4		P.A. Now (θ)	269.4°
Sep first	31.6		Sep last	31.4		Sep. Now (ρ)	31.4"
Mag pri	6.61		Mag sec	8.88		delta mag (ΔM)	2.27		Spectral class	G0V (yellow)
Pri motion ra	-122		Sec motion ra	-107
Pri motion dec	-085		Sec motion dec	-091
Notes	N V S (See Notes, Proper motion indicates physical, Parallax indidates non-physical)

rPM=0.109 (< 0.3, Physical double) This double is not physical.

Name	HD 218687		Constellation	Pegasus		SAO	108437		HIP	114378
Tycho2	1167-01661-1		Gaia DR2	2815542965962559488		HD	218687		GC	32266
BD	BD+13 5059		Distance	24.83		Distance ly	81

discov_num	notes	refcode
STF2986	LDS1066.
	Significantly different proper motion and parallax for components, so	Jao2017
	non physical.
	A comp is SB1, P=3.632d (Griffin, 2001 Obs 121, 221)	Tok2014d

refcode	metd	author	reference
Jao2017	C j	Jao, W.-C., Henry, T.J., Winters, J.G., Subasavage, J.P., Riedel, A.R.,	2017AJ....154..191J
Jao2017		Silverstein, M.L. & Ianna, P.A.
Jao2017		AJ 154, 191, 2017
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014

idgroup	discov	author
1	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
23100+1426	STF2986		2006	37	270	32.0	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2007	38	270	31.6	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2008	39	270	31.6	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2010	40	270	31.3	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2012	43	270	31.5	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2013	47	268	31.8	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2014	48	269	31.3	6.61	8.88	G0V	N D	230957.10+142535.6
23100+1426	STF2986		2016	50	270	31.5	6.61	8.88	G0V	N	230957.10+142535.6
23100+1426	STF2986		2017	51	270	31.4	6.61	8.88	G0V	NS	230957.10+142535.6
23100+1426	STF2986		2018	52	270	31.4	6.61	8.88	G0V	NS	230957.10+142535.6

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

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	23/10/31	Diego Vercelli	easy	separated	270	interesting
Show	23/09/24	Diego Vercelli	easy	separated	270	interesting

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DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS