00022+2705 BU  733AB (85 Peg)

Coord 2000	00022+2705		Discov num	BU  733		Comp	AB		Coord arcsec 2000	00 02 10.18 +27 04 55.6
Date first	1878		Date last	2015		Obs	196
Pa first	274		Pa last	12		P.A. Now (θ)	132.7°
Sep first	0.7		Sep last	0.4		Sep. Now (ρ)	0.78"
Mag pri	5.83		Mag sec	8.90		delta mag (ΔM)	3.07		Spectral class	G5Vb+K5V (yellow/yellow-orange)
Pri motion ra	+830		Sec motion ra
Pri motion dec	-989		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	85 Peg	91669	00 02 10 +27 04 56	BU 733 AB	2015	196	133	0.8	5.83	8.90	3.07	Y	<===
Show		91669	00 02 10 +27 04 56	BU 733 AC	2013	66	324	177.5	5.83	9.88	4.05
Show		91669	00 02 10 +27 04 56	BU 733 AD	1998	16	307	206.4	5.83	14.20	8.37
Show		91669	00 02 10 +27 04 56	HSW 1 AE	1998	2	309	100.9	5.83	15.67	9.84

Quintuple system
5 visible stars in this system

Precise pa	12.1		Precise sep	0.385		Name	85 Peg		Constellation	Pegasus
SAO	91669		HIP	171		Tycho2	1732-02731-1		HD	224930
HR	9088		GC	-32202		ADS	17175		GL	Gl 914A
BD	BD+26 4734		Flamsteed	85 Pegasi		Flamsteed name	85 Peg		Distance	12.17
Distance ly	39.7		last precise pa	12.1		last precise sep	0.385

Period (P)	26.28y		Periastron (T)	1989.4y		Semi-major axis (a)	0.83a
Eccentricity (e)	0.38		Inclination (i)	49°		Longitude of periastron (ω)	96°
Node (Ω)	290°		Note			Grade	1	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000 0.749 183.2 2001 0.747 193.4 2002 0.751 203.7 2003 0.763 213.7 2004 0.780 223.3 2005 0.801 232.5 2006 0.823 241.1 2007 0.841 249.4 2008 0.853 257.4 2009 0.853 265.2 2010 0.836 273.2 2011 0.796 281.8 2012 0.727 291.6 2013 0.622 304.1 2014 0.487 322.9 2015 0.362 356.2 2016 0.357 44.3 2017 0.475 78.9 2018 0.604 98.7 2019 0.697 112.2 2020 0.754 123.0 2021 0.782 132.7 2022 0.789 141.9 2023 0.785 151.2 2024 0.774 160.6 2025 0.761 170.3 2026 0.751 180.3 2027 0.747 190.6 2028 0.749 200.8 2029 0.759 210.9 2030 0.775 220.6		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
00022+2705	BU 733	AB	2006	179	244	0.8	5.83	8.90	G7V+K5V	NOD	000210.15+270456.1
00022+2705	BU 733	AB	2007	180	254	0.9	5.83	8.90	G7V+K5V	NOD	000210.15+270456.1
00022+2705	BU 733	AB	2009	181	269	0.9	5.83	8.90	G7V+K5V	NOD	000210.18+270455.6
00022+2705	BU 733	AB	2014	188	339	0.4	5.83	8.90	G5Vb K5V	NOD	000210.18+270455.6
00022+2705	BU 733	AB	2015	191	12	0.4	5.83	8.90	G5Vb+K5V	NO	000210.18+270455.6

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