01055+2107 AG   14

Coord 2000	01055+2107		Discov num	AG   14		Comp			Coord arcsec 2000	01 05 32.41 +21 07 14.5
Date first	1901		Date last	2018		Obs	65
Pa first	211		Pa last	309		P.A. Now (θ)	307.8°
Sep first	0.9		Sep last	0.8		Sep. Now (ρ)	0.87"
Mag pri	10.01		Mag sec	10.06		delta mag (ΔM)	0.05		Spectral class	K0 (yellow-orange)
Pri motion ra	-013		Sec motion ra	-013
Pri motion dec	-034		Sec motion dec	-034
Notes	O (Orbital solution)

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

Precise pa	309		Precise sep	0.822		Constellation	Pisces		SAO	74481
HIP	5115		Tycho2	1202-00246-1		Gaia DR2	08887273472		HD	6439
ADS	896		BD	BD+20 154		Distance	99.8		Distance ly	325.55
last precise pa	309		last precise sep	0.822

Period (P)	498.66y		Periastron (T)	2465.42y		Semi-major axis (a)	1.062a
Eccentricity (e)	0.7		Inclination (i)	159°		Longitude of periastron (ω)	190.9°
Node (Ω)	265.5°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2012

label rho theta 2000 0.633 327.3 2001 0.646 326.0 2002 0.658 324.7 2003 0.671 323.5 2004 0.684 322.3 2005 0.696 321.1 2006 0.709 320.0 2007 0.721 319.0 2008 0.733 317.9 2009 0.745 316.9 2010 0.758 316.0 2011 0.770 315.1 2012 0.782 314.2 2013 0.793 313.3 2014 0.805 312.4 2015 0.817 311.6 2016 0.828 310.8 2017 0.840 310.0 2018 0.851 309.3 2019 0.863 308.5 2020 0.874 307.8 2021 0.885 307.1 2022 0.896 306.4 2023 0.907 305.7 2024 0.918 305.1 2025 0.928 304.5 2026 0.939 303.8 2027 0.950 303.2 2028 0.960 302.6 2029 0.971 302.0 2030 0.981 301.5 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
01055+2107	AG 14		1995	60	303	0.4	10.01	10.06	K0	NOD	010532.41+210714.5
01055+2107	AG 14		2010	63	315	0.8	10.01	10.06	K0	NOD	010532.41+210714.5
01055+2107	AG 14		2018	64	309	0.8	10.01	10.06	K0	O	010532.41+210714.5

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