01095+4715 STT 515AB (Phi And)

Coord 2000	01095+4715		Discov num	STT 515		Comp	AB		Coord arcsec 2000	01 09 30.12 +47 14 30.6
Date first	1851		Date last	2016		Obs	231
Pa first	308		Pa last	115		P.A. Now (θ)	114°
Sep first	0.4		Sep last	0.6		Sep. Now (ρ)	0.52"
Mag pri	4.59		Mag sec	5.61		delta mag (ΔM)	1.02		Spectral class	B7Ve (blue-white)
Pri motion ra	+000		Sec motion ra	+000
Pri motion dec	-011		Sec motion dec	-011
Notes	N O (See Notes, Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Phi And	36972	01095+4715	STT 515	AB	1851	2016	231	114	0.5	4.59	5.61	1.02	Y	<===
Show		36972	01095+4715	SBK 1	AC	1884	1998	2	186	14.7	4.59
Show		36972	01095+4715	SBK 1	AD	1884	1884	1	64	27.7	4.59

Quadruple system
4 visible stars in this system

Precise pa	114.9		Precise sep	0.58		Name	Phi And		Constellation	Andromeda
SAO	36972		HIP	5434		Tycho2	3268-01358-1		Gaia DR2	5317862144
HD	6811		HR	335		GC	1394		ADS	940
BD	BD+46 275		Bayer	Phi Andromedae		Bayer name	Phi And		Flamsteed	42 Andromedae
Flamsteed name	42 And		Distance	219.78		Distance ly	716.92		last precise pa	114.9
last precise sep	0.58

Period (P)	554y	± 67	Periastron (T)	1907.45y	± 5.03	Semi-major axis (a)	0.573a	± 0.051
Eccentricity (e)	0.385	± 0.043	Inclination (i)	142.2°	± 2.8	Longitude of periastron (ω)	112.6°	± 9.1
Node (Ω)	337.2°	± 3.2	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2008

label rho theta 2000 0.503 125.8 2001 0.504 125.2 2002 0.505 124.6 2003 0.506 124.0 2004 0.507 123.4 2005 0.509 122.8 2006 0.510 122.2 2007 0.511 121.6 2008 0.512 121.0 2009 0.513 120.4 2010 0.514 119.8 2011 0.515 119.2 2012 0.516 118.7 2013 0.517 118.1 2014 0.518 117.5 2015 0.519 116.9 2016 0.520 116.3 2017 0.521 115.8 2018 0.522 115.2 2019 0.523 114.6 2020 0.524 114.0 2021 0.524 113.5 2022 0.525 112.9 2023 0.526 112.3 2024 0.527 111.8 2025 0.528 111.2 2026 0.529 110.7 2027 0.530 110.1 2028 0.531 109.6 2029 0.531 109.0 2030 0.532 108.5 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01095+4715	STT 515	AB	2006	201	122	0.5	4.59	5.61	B7Ve	NOD	010930.12+471430.6
01095+4715	STT 515	AB	2007	203	121	0.5	4.59	5.61	B7Ve	NOD	010930.12+471430.6
01095+4715	STT 515	AB	2008	204	121	0.5	4.59	5.61	B7Ve	NOD	010930.12+471430.6
01095+4715	STT 515	AB	2010	229	120	0.5	4.59	5.61	B7Ve	NOD	010930.12+471430.6
01095+4715	STT 515	AB	2012	226	118	0.5	4.59	5.61	B7Ve	NOD	010930.12+471430.6
01095+4715	STT 515	AB	2015	228	114	0.6	4.59	5.61	B7Ve	NO	010930.12+471430.6
01095+4715	STT 515	AB	2016	229	115	0.6	4.59	5.61	B7Ve	NO	010930.12+471430.6

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