01057+2128 STF 88 AB (Psi1 Psc)

Coord 2000	01057+2128		Discov num	STF  88		Comp	AB		Coord arcsec 2000	01 05 40.93 +21 28 23.6
Date first	1755		Date last	2020		Obs	166
Pa first	156		Pa last	158.7		P.A. Now (θ)	158.7°
Sep first	30.4		Sep last	29.88		Sep. Now (ρ)	29.88"
Mag pri	5.27		Mag sec	5.45		delta mag (ΔM)	0.18		Spectral class	B9.5V+A0V (blue-white/white)
Pri motion ra	+044		Sec motion ra	+054
Pri motion dec	-014		Sec motion dec	-013
Notes	N Z V (See Notes, Parallax indicates components are physical, Proper motion indicates physical)

rPM=0.181 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		74482	01 05 41 +21 28 24	YR 6 Aa,Ab	2017	21	312	0.1	5.70	6.60	0.90	Y
Show	Psi1 Psc	74482	01 05 41 +21 28 24	STF 88 AB	2020	166	159	29.9	5.27	5.45	0.18		<===
Show		74482	01 05 41 +21 28 24	STF 88 AC	2017	15	124	90.4	5.27	10.71	5.44
Show		74483	01 05 42 +21 27 56	STF 88 BC	2017	18	109	68.5	5.45	10.71	5.26

Quadruple system
3 estimated visually detectable stars in this system

Name	Psi1 Psc		Var name	NSV397 Psc		Constellation	Pisces		SAO	74482
HIP	5131		Tycho2	1202-02124-1		Gaia DR2	2790497534190737152		HD	6456
HR	310		GC	1309		ADS	899		BD	BD+20 156
Bayer	Psi 1 Piscium		Bayer name	Psi1 Psc		Flamsteed	74 Piscium		Flamsteed name	74 Psc
Distance	84.32		Distance ly	275.05		Bayer greek	ψ1 Psc

discov_num	notes	refcode
STF 88	psi 1 Psc
	AB: HJL 12.	HJL1986
	AB: SHY 395. Bayesian analysis by Shaya & Olling (2011) indicates very	Shy2011
	high (near 100%) probability pair is physical.
	AB: H 4 9.	MEv2010
YR 6	Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 4.29 +/- 0.78, 4.29, and 2.19 Msun, respectively.	Mlk2012

refcode	metd	author	reference
HJL1986	Pa -	Halbwachs, J.L.	1986A&AS...66..131H
HJL1986		A&AS 66, 131, 1986
HJL1986		(Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986		only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012	not -	Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.	2012A&A...546A..69M
Mlk2012		A&A 546, A69, 2012
Shy2011	-	Shaya, E.J. & Olling, R.	2011ApJS..192....2S
Shy2011		ApJS 192, 2, 2011
Shy2011		(Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011		added to WDS only if probability 90% or greater.)

idgroup	discov	author
1	STF	Struve, F.G.W.
34	YR	Yale-Rochester (from additional DD list - see HOR)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01057+2128	STF 88	AB	2007	139	159	29.6	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2009	145	158	29.6	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2010	146	160	29.6	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2011	150	159	29.8	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2012	151	159	29.7	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2014	153	159	29.7	5.27	5.45	B9.5V A0V	NZDV	010540.93+212823.6
01057+2128	STF 88	AB	2015	154	159	29.6	5.27	5.45	B9.5V+A0V	NZ V	010540.93+212823.6
01057+2128	STF 88	AB	2016	159	159	29.8	5.27	5.45	B9.5V+A0V	NZ V	010540.93+212823.6
01057+2128	STF 88	AB	2017	161	159	29.8	5.27	5.45	B9.5V+A0V	NZ V	010540.93+212823.6
01057+2128	STF 88	AB	2018	162	160	29.7	5.27	5.45	B9.5V+A0V	NZ V	010540.93+212823.6
01057+2128	STF 88	AB	2020	166	159	29.9	5.27	5.45	B9.5V+A0V	NZ V	010540.93+212823.6

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	22/11/10	Daedalus1	mean difficulty	separated	160		Bright, white pair. C component identified. Both stars exactly the same color; primary is slightly brighter.

Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	22/11/10	Daedalus1	mean difficulty	29.80	0.06	160.00	0.00	0.18	12	Pickering 6, good.

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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