16426+2340 STF 2087 AC

16^h 42^m 34.83^s +23° 40' 01.9" P.A. 355.00 sep 118.9 mag 8.84,12.52 Sp G5IV

Coord 2000	16426+2340	Discov num	STF2087	Comp	AC	Coord arcsec 2000	16 42 34.83 +23 40 01.9
Date first	1911	Date last	2015	Obs	6
Pa first	354	Pa last	354.6	P.A. Now (θ)	354.6°
Sep first	121.4	Sep last	118.901	Sep. Now (ρ)	118.901"
Mag pri	8.84	Mag sec	12.52	delta mag (ΔM)	3.68	Spectral class	G5IV (yellow)
Pri motion ra	+003	Sec motion ra	-014
Pri motion dec	+006	Sec motion dec	-008
Notes	W

rPM=1.366

This double is not physical.

16426+2340 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 150828	84552	16 42 35 +23 40 02	STF 2087 AB	2020	91	287	5.3	8.84	8.90	0.06
Show		84552	16 42 35 +23 40 02	STF 2087 AC	2015	6	355	118.9	8.84	12.52	3.68		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Hercules

SAO

84552

Tycho2

2045-00346-1

Gaia DR2

1299746168507031424

WDS 16426+2340 STF 2087 AC : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STFA		(F. Struve DD - Appendix list #1)	...................
STFB		(F. Struve DD - Appendix list #2)	...................
StF1833A	Ma -	Struve, F.G.W.	1833MmRAS...5...13H
StF1833A	+Mc	cited by Herschel (MemRAS 5, 13, 1833)
StF1833B	Ma -	Struve, F.G.W.	1833AN.....10..389B
StF1833B		cited by Bessel (AN 10, 389, 1833)
StF1837	Ma -	Struve, F.G.W.	1837AN.....14...249
StF1837		Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837		(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A	Ma -	Struve, F.G.W.	1844QB43.S66.......
StF1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A	Ma -	Struve, F.G.W.	.
StF1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A	Ma -	Struve, F.G.W.	1865AN.....64...81E
StF1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A	Ma -	Struve, F.G.W.	1875AN.....85..323D
StF1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878	Ma -	Struve, F.G.W.	.
StF1878		Pulkova Observations 9, 1878
StF1878B	Ma -	Struve, F.G.W.	1878Obs.....2..239G
StF1878B		cited by Gledhill (Obs 2, 239, 1878)
StF1880A	Ma -	Struve, F.G.W.	1880Obs.....3..535G
StF1880A		cited by Gledhill (Obs 3, 535, 1880)
StF1906A	Ma -	Struve, F.G.W.	1906QB821.B972.....
StF1906A		cited in BDS (Burnham Double Star Cat.), 1906
StF1906B	Ma -	Struve, F.G.W.	1906MmRAS..56....1L
StF1906B		cited by Lewis (MemRAS 56, 1, 1906)
StF1922A	Ma -	Struve, F.G.W.	1922AN....216...49R
StF1922A		cited by Rabe (AN 216, 49, 1922)
StF1932A	Ma -	Struve, F.G.W.	1932QB821.A43......
StF1932A		cited in ADS (Aitken Double Star Cat.), 1932
StF2002	- -	Weis, J.
StF2002		F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002		USNO Library : QB 821 .S8 W49 2002
StF2022	- -	email note from Jan Weis: 6 July 2022
StF9999	Ma -	Struve, F.G.W.	...................
StF9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16426+2340	STF2087	AC	1997	3	354	119.6	8.84	12.00	G5IV	D	164234.83+234001.9
16426+2340	STF2087	AC	2001	4	355	119.2	8.84	12.00	G5IV	D	164234.83+234001.9
16426+2340	STF2087	AC	2015	5	355	118.9	8.84	12.52	G5IV	W	164234.83+234001.9

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WDS 16426+2340 STF 2087 AC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 16426+2340 STF 2087 AC : MEASURES

No records found.

WDS 16426+2340 : VIRTUAL EYEPIECE

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WDS 16426+2340 : ALADIN DSS IMAGE @

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

Error -22130
Not valid ID.

Error -22130
Not valid ID.
Error -27220
Not valid ID.