01024+0504 HDS 135AB

Coord 2000	01024+0504		Discov num	HDS 135		Comp	AB		Coord arcsec 2000	01 02 24.56 +05 03 41.2
Date first	1991		Date last	2019		Obs	33
Pa first	62		Pa last	60		P.A. Now (θ)	60.5°
Sep first	0.7		Sep last	0.7		Sep. Now (ρ)	0.7"
Mag pri	8.49		Mag sec	10.07		delta mag (ΔM)	1.58		Spectral class	K2+K8 (yellow-orange/yellow-orange)
Pri motion ra	+323		Sec motion ra	+322
Pri motion dec	+226		Sec motion dec	+226
Notes	N O (See Notes, Orbital solution)

Visually invisible, K-band or other infrared star rPM=0.003 (< 0.3, Physical double) This double is physical.

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name

SAO

coord_2000

discov#

comp

first

last

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sep

mag1

mag2

d_mag

orb

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01024+0504

HDS 135

AB

1991

2019

33

60

0.7

8.49

10.07

1.58

Y

<===

Show

01024+0504

WNO 50

AC

1993

2000

4

88

999.9

8.49

14.10

5.61

Triple system
3 visible stars in this system

Precise pa	60.4		Precise sep	0.711		Constellation	Pisces		HIP	4849
Tycho2	0025-01005-1		HD	6101		GL	NN 3071		BD	BD+04 158
Distance	21.14		Distance ly	68.96		last precise pa	60.4		last precise sep	0.711

Period (P)	28.23y	± 0.17	Periastron (T)	2002.69y	± 0.01	Semi-major axis (a)	0.461a	± 0.002
Eccentricity (e)	0.671	± 0.002	Inclination (i)	144.8°	± 0.7	Longitude of periastron (ω)	22.1°	± 1.2
Node (Ω)	268.6°	± 1	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label rho theta 2000 0.293 3.1 2001 0.225 338.1 2002 0.173 294.9 2003 0.143 226.0 2004 0.195 160.4 2005 0.293 131.5 2006 0.386 117.1 2007 0.466 108.0 2008 0.534 101.4 2009 0.590 96.2 2010 0.637 91.9 2011 0.675 88.1 2012 0.705 84.6 2013 0.727 81.4 2014 0.743 78.4 2015 0.752 75.5 2016 0.754 72.6 2017 0.751 69.7 2018 0.741 66.7 2019 0.726 63.7 2020 0.704 60.5 2021 0.677 57.0 2022 0.643 53.3 2023 0.603 49.0 2024 0.557 44.2 2025 0.504 38.3 2026 0.445 31.0 2027 0.379 21.3 2028 0.309 7.3 2029 0.240 345.1 2030 0.183 306.9 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
01024+0504	HDS 135	AB	2005	12	120	0.4	8.49	10.07	K2	N D	010224.56+050341.2
01024+0504	HDS 135	AB	2008	14	97	0.6	8.49	10.07	K3 K8	N D	010224.56+050341.2
01024+0504	HDS 135	AB	2010	25	91	0.7	8.49	10.07	K3 K8	N D	010224.56+050341.2
01024+0504	HDS 135	AB	2014	28	75	0.8	8.49	10.07	K2+K8	NO	010224.56+050341.2
01024+0504	HDS 135	AB	2018	32	65	0.7	8.49	10.07	K2+K8	NO	010224.56+050341.2
01024+0504	HDS 135	AB	2019	33	60	0.7	8.49	10.07	K2+K8	NO	010224.56+050341.2

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