03513+2621 A 1830 AB (HD 24104)

03^h 51^m 20.24^s +26° 21' 13.6" P.A. 194.00 sep 0.4 mag 8.02,8.00 Sp F8

Coord 2000	03513+2621		Discov num	A 1830		Comp	AB		Coord arcsec 2000	03 51 20.24 +26 21 13.6
Date first	1908		Date last	2018		Obs	25
Pa first	8		Pa last	193.5		P.A. Now (θ)	193.5°
Sep first	0.3		Sep last	0.436		Sep. Now (ρ)	0.436"
Mag pri	8.02		Mag sec	8.00		delta mag (ΔM)	0.02		Spectral class	F8 (yellow-white)
Pri motion ra	+058		Sec motion ra
Pri motion dec	-033		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

03513+2621 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 24104	76270	03 51 20 +26 21 14	A 1830 AB	2018	25	194	0.4	8.02	8.00	0.02	Y	<===
Show		76270	03 51 20 +26 21 14	GRV 195 AC	2014	9	330	60.8	8.02	11.11	3.09

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 24104		Constellation	Taurus		SAO	76270		Tycho2	1808-00210-1
Gaia DR2	70384652737248256		HD	24104		ADS	2811

ORBITAL ELEMENTS SOLUTION #1

Period (P)	936.05y		Periastron (T)	1981.42y		Semi-major axis (a)	1.776a
Eccentricity (e)	0.965		Inclination (i)	89.3°		Longitude of periastron (ω)	266.2°
Node (Ω)	192.5°		Notes	n		Reference	Msn2017e
Equinox	2000		Last observation	2009		Grade	5	(1=Definitive, 9=Indet.)

label	theta	rho
2000	193.4	0.385
2001	193.5	0.392
2002	193.5	0.399
2003	193.5	0.405
2004	193.5	0.411
2005	193.6	0.417
2006	193.6	0.423
2007	193.6	0.429
2008	193.6	0.434
2009	193.6	0.439
2010	193.7	0.444
2011	193.7	0.449
2012	193.7	0.453
2013	193.7	0.458
2014	193.7	0.462
2015	193.8	0.466
2016	193.8	0.470
2017	193.8	0.474
2018	193.8	0.478
2019	193.8	0.481
2020	193.8	0.485
2021	193.9	0.488
2022	193.9	0.491
2023	193.9	0.495
2024	193.9	0.498
2025	193.9	0.501
2026	193.9	0.504
2027	194.0	0.507
2028	194.0	0.509
2029	194.0	0.512
2030	194.0	0.515

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds03513%2B2621e.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic

ORBITAL ELEMENTS SOLUTION #2

Period (P)	345y		Periastron (T)	1983.87y		Semi-major axis (a)	0.619a
Eccentricity (e)	0.957		Inclination (i)	91.8°		Longitude of periastron (ω)	243°
Node (Ω)	195.3°		Notes	n		Reference	Tok2021c
Equinox	2000		Last observation	2019		Grade	4	(1=Definitive, 9=Indet.)

label	theta	rho
2000	193.9	0.309
2001	193.9	0.318
2002	193.8	0.327
2003	193.8	0.335
2004	193.8	0.343
2005	193.7	0.351
2006	193.7	0.358
2007	193.7	0.366
2008	193.6	0.373
2009	193.6	0.379
2010	193.6	0.386
2011	193.6	0.392
2012	193.5	0.398
2013	193.5	0.404
2014	193.5	0.410
2015	193.5	0.415
2016	193.5	0.421
2017	193.4	0.426
2018	193.4	0.431
2019	193.4	0.436
2020	193.4	0.441
2021	193.4	0.446
2022	193.3	0.451
2023	193.3	0.455
2024	193.3	0.459
2025	193.3	0.464
2026	193.3	0.468
2027	193.3	0.472
2028	193.2	0.476
2029	193.2	0.480
2030	193.2	0.483

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds03513%2B2621c.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic