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14088+7733
BNU 9
4 UMi

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

14088+7733 BNU 9 (4 UMi)

14^h 08^m 51.01^s +77° 32' 50.8" P.A. 179.00 sep 0.0 mag 4.82, Sp K3III dist. 140.06 pc (456.88 l.y.)

Coord 2000	14088+7733		Discov num	BNU 9		Comp			Coord arcsec 2000	14 08 51.01 +77 32 50.8
Date first	1984		Date last	1984		Obs	1
Pa first	179		Pa last	179		P.A. Now (θ)	179°
Sep first	0.0		Sep last	0.02		Sep. Now (ρ)	0.02"
Mag pri	4.82		Mag sec			delta mag (ΔM)			Spectral class	K3III (yellow-orange)
Pri motion ra	-032		Sec motion ra
Pri motion dec	+034		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	4 UMi		Constellation	Ursa Minor		SAO	7958		HIP	69112
Tycho2	4561-02317-1		Gaia DR2	1714135092946125184		HD	124547		HR	5321
GC	19142		BD	BD+78 478		Flamsteed	4 Ursae Minoris		Flamsteed name	4 UMi
FK5	524		Distance	140.06		Distance ly	456.88

ORBITAL ELEMENTS

Period (P)	605.8d		Periastron (T)	38901.7d (1965.385y)		Semi-major axis (a)	3.4m	± 0.2
Eccentricity (e)	0.14		Inclination (i)	136°	± 5.1	Longitude of periastron (ω)	311.8°
Node (Ω)	325.5°	± 2.8	Notes	n		Reference	Ren2013
Equinox	2000		Last observation			Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000-01-01	80.2	0.002
2001-01-01	192.0	0.003
2002-01-01	334.5	0.003
2003-01-01	143.5	0.004
2004-01-01	264.7	0.003
2005-01-01	72.0	0.002
2006-01-01	187.9	0.003
2007-01-01	329.6	0.003
2008-01-01	140.3	0.004
2009-01-01	258.8	0.003
2010-01-01	63.3	0.002
2011-01-01	183.9	0.003
2012-01-01	325.0	0.003
2013-01-01	136.9	0.004
2014-01-01	252.8	0.003
2015-01-01	54.3	0.002
2016-01-01	180.0	0.003
2017-01-01	320.4	0.003
2018-01-01	133.4	0.003
2019-01-01	246.7	0.003
2020-01-01	45.1	0.002
2021-01-01	176.4	0.003
2022-01-01	315.8	0.003
2023-01-01	129.7	0.003
2024-01-01	240.6	0.003
2025-01-01	36.0	0.002
2026-01-01	172.9	0.004
2027-01-01	311.3	0.003
2028-01-01	125.9	0.003
2029-01-01	234.5	0.003
2030-01-01	27.2	0.002
2031-01-01	169.5	0.004
2032-01-01	306.7	0.003
2033-01-01	121.8	0.003
2034-01-01	228.6	0.003
2035-01-01	18.9	0.002
2036-01-01	166.1	0.004
2037-01-01	302.1	0.003
2038-01-01	117.4	0.003
2039-01-01	222.8	0.003
2040-01-01	11.2	0.002
2041-01-01	162.9	0.004
2042-01-01	297.3	0.003
2043-01-01	112.6	0.003
2044-01-01	217.2	0.003
2045-01-01	4.0	0.003
2046-01-01	159.7	0.004
2047-01-01	292.5	0.003
2048-01-01	107.5	0.003
2049-01-01	211.8	0.003
2050-01-01	357.4	0.003

grafico orbita

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

wds14088%2B7733f.png orbit plot

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