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Doubles in session

Current system

07351+3058
STT 175 AB

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

07351+3058 STT 175 AB

07^h 35^m 08.79^s +30° 57' 39.3" P.A. 348.00 sep 0.1 mag 6.08,6.49 Sp K0III dist. 114.16 pc (372.39 l.y.)

Coord 2000	07351+3058		Discov num	STT 175		Comp	AB		Coord arcsec 2000	07 35 08.79 +30 57 39.3
Date first	1842		Date last	2015		Obs	199
Pa first	331		Pa last	347.7		P.A. Now (θ)	337.6°
Sep first	0.5		Sep last	0.06		Sep. Now (ρ)	0.155"
Mag pri	6.08		Mag sec	6.49		delta mag (ΔM)	0.41		Spectral class	K0III (yellow-orange)
Pri motion ra	-027		Sec motion ra
Pri motion dec	+008		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

07351+3058 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		60204	07 35 09 +30 57 39	STT 175 AB	2015	199	348	0.1	6.08	6.49	0.41	Y	<===
Show	HD 60318	60204	07 35 09 +30 57 39	STT 175 AB,C	2011	12	193	82.5	5.46	10.39	4.93

Triple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Gemini		SAO	60204		HIP	36896		Tycho2	2453-01917-1
Gaia DR2	879873945221537024		HD	60318		HR	2896		GC	10137
ADS	6185		BD	BD+31 1620		Distance	114.16		Distance ly	372.39

ORBITAL ELEMENTS

Period (P)	213.368y	± 3.003	Periastron (T)	44117m (1979.665y)	± 93	Semi-major axis (a)	0.5554a	± 0.0075
Eccentricity (e)	0.6756	± 0.0051	Inclination (i)	91.788°	± 0.042	Longitude of periastron (ω)	137.5°	± 1.1
Node (Ω)	329.89°	± 0.14	Notes	n		Reference	Mut2010d
Equinox	2000		Last observation	2005		Grade	3	(1=Definitive, 9=Indet.)

label	theta	rho
2000	143.7	0.120
2001	142.7	0.108
2002	141.6	0.097
2003	140.2	0.086
2004	138.3	0.074
2005	135.7	0.063
2006	132.0	0.051
2007	126.2	0.040
2008	116.2	0.030
2009	97.0	0.021
2010	62.4	0.017
2011	27.3	0.021
2012	7.5	0.029
2013	357.2	0.040
2014	351.3	0.051
2015	347.5	0.062
2016	344.9	0.074
2017	343.0	0.085
2018	341.6	0.097
2019	340.4	0.109
2020	339.5	0.120
2021	338.8	0.132
2022	338.1	0.143
2023	337.6	0.155
2024	337.1	0.166
2025	336.7	0.177
2026	336.4	0.189
2027	336.0	0.200
2028	335.8	0.211
2029	335.5	0.222
2030	335.3	0.233

grafico orbita

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

wds07351%2B3058a.png orbit plot

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

SUSPECTED ORBITAL ELEMENTS

Identifier	07351+3058 STT 175 B
coord_arcsec_2000	073508.80+305739.3

Period (P)	727.9d	± 8.6	Periastron (T)	53876m (2006.385y)	± 19	Semi-major axis (a)	0.00263a	± 0.00017
Eccentricity (e)	0.339	± 0.074	Inclination (i)	86.2°	± 1.6	Longitude of periastron (ω)	338.6°	± 6.6
Node (Ω)	158.5°	± 2.8	Notes	n		Reference	Mut2010d
Equinox	2000		Last observation	2005		Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000-01-01	342.5	0.002
2001-01-01	331.2	0.001
2002-01-01	342.6	0.002
2003-01-01	331.4	0.001
2004-01-01	342.8	0.002
2005-01-01	331.7	0.002
2006-01-01	343.0	0.002
2007-01-01	331.9	0.002
2008-01-01	343.2	0.002
2009-01-01	332.1	0.002
2010-01-01	343.4	0.002
2011-01-01	332.3	0.002
2012-01-01	343.6	0.002
2013-01-01	332.5	0.002
2014-01-01	343.9	0.001
2015-01-01	332.7	0.002
2016-01-01	344.1	0.001
2017-01-01	332.8	0.002
2018-01-01	344.4	0.001
2019-01-01	333.0	0.002
2020-01-01	344.7	0.001
2021-01-01	333.2	0.002
2022-01-01	345.1	0.001
2023-01-01	333.3	0.002
2024-01-01	345.5	0.001
2025-01-01	333.5	0.002
2026-01-01	345.9	0.001
2027-01-01	333.6	0.002
2028-01-01	346.4	0.001
2029-01-01	333.7	0.002
2030-01-01	346.9	0.001

grafico orbita

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

wds07351%2B3058r.png orbit plot

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