16048+7016 STTA 143 AB (HD 145309)

16^h 04^m 48.95^s +70° 15' 42.0" P.A. 83.00 sep 46.9 mag 6.87,8.78 Sp A0 dist. 129.7 pc (423.08 l.y.)

Coord 2000	16048+7016	Discov num	STTA143	Comp	AB	Coord arcsec 2000	16 04 48.95 +70 15 42.0
Date first	1875	Date last	2018	Obs	31
Pa first	84	Pa last	82.6	P.A. Now (θ)	82.6°
Sep first	46.9	Sep last	46.936	Sep. Now (ρ)	46.936"
Mag pri	6.87	Mag sec	8.78	delta mag (ΔM)	1.91	Spectral class	A0 (white)
Pri motion ra	+006	Sec motion ra	+005
Pri motion dec	+026	Sec motion dec	+026
Notes	N (See Notes)

rPM=0.037 (< 0.3, Physical double)

This double is physical.

16048+7016 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		8415	16 04 49 +70 15 42	HDS 2269 Aa,Ab	1991	1	292	0.2	7.17	8.56	1.39
Show	HD 145309	8415	16 04 49 +70 15 42	STTA 143 AB	2018	31	83	46.9	6.87	8.78	1.91		<===

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 145309	Constellation	Ursa Minor	SAO	8415	HIP	78761
Tycho2	4422-02073-1	Gaia DR2	1647138001174746112	HD	145309	GC	21669
BD	BD+70 863	Distance	129.7	Distance ly	423.08

WDS 16048+7016 STTA 143 AB (HD 145309) : NOTES

discov_num	notes	refcode
STTA143	B is BD+70@864.

REFERENCES

refcode	metd	author	reference
HDS		Hipparcos Double Star (from additional DD list)	...................
STTA		(O. Struve DD - Appendix list)	...................
Stt1864	Ma -	Struve, O.	1864MNRAS..24..149S
Stt1864		MNRAS 24, 149, 1864
Stt1866	orb -	Struve, O.	.
Stt1866		Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874	orb -	Struve, O.	.
Stt1874		Compte Rendus 79, 1467, 1874
Stt1875	orb -	Struve, O.	1875MNRAS..35..367S
Stt1875		MNRAS 35, 367, 1875
Stt1878	Ma -	Struve, O.	1878ObPul...9....1S
Stt1878		Pulkova Observations 9, 1, 1878
Stt1879A	Ma -	Struve, O.	1879Obs.....2..304G
Stt1879A		cited by Gledhill (Obs 2, 304, 1879)
Stt1879B	Ma -	Struve, O.	1879Obs.....3..245G
Stt1879B		cited by Gledhill (Obs 3, 245, 1879)
Stt1879C	Ma -	Struve, O.	1879Obs.....2..344G
Stt1879C		cited by Gledhill (Obs 2, 344, 1879)
Stt1880A	Ma -	Struve, O.	1880Obs.....2..605H
Stt1880A		cited by Hunt (Obs. 3, 605, 1880)
Stt1880B	Ma -	Struve, O.	1880Obs.....3..535G
Stt1880B		cited by Gledhill (Obs 3, 535, 1880)
Stt1880C	Ma -	Struve, O.	1880MNRAS..40..497B
Stt1880C		cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A	Ma -	Struve, O.	1884AReg...22..216S
Stt1884A		cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a	Ma j	Struve, O.	1893ObPul..10....1S
Stt1893a		Pulkova Obs. Observations 10, 1, 1893
Stt1906A	Ma -	Struve, O.	1906MmRAS..56....1L
Stt1906A		cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B	Ma j	Struve, O.	1906QB821.B972.....
Stt1906B		cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A	Ma -	Struve, O.	1908MNRAS..68..465B
Stt1908A		cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A	Ma -	Struve, O.	1913QB811.B8.......
Stt1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A	Ma -	Struve, O.	1914AN....198..107R
Stt1914A		cited by Rabe (AN 198, 107, 1914)
Stt1932A	Ma -	Struve, O.	1932QB821.A43......
Stt1932A		cited in ADS (Aitken Double Star Cat., 1932)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16048+7016	STTA143	AB	1999	25	83	46.9	6.87	8.78	A0	N D	160448.95+701542.0
16048+7016	STTA143	AB	2011	26	83	46.6	6.87	8.78	A0	N D	160448.95+701542.0
16048+7016	STTA143	AB	2015	29	83	46.9	6.87	8.78	A0	N	160448.95+701542.0
16048+7016	STTA143	AB	2018	30	83	46.9	6.87	8.78	A0	N	160448.95+701542.0

If you need more information about this double, apply for a data request form to the WDS.

WDS 16048+7016 STTA 143 AB (HD 145309) : VISUAL OBSERVATIONS REPORTS

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	23/11/25	Diego Vercelli	very easy	separated	80	interesting

WDS 16048+7016 STTA 143 AB (HD 145309) : MEASURES

No records found.

WDS 16048+7016 (HD 145309) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 16048+7016 (HD 145309) : ALADIN DSS IMAGE @ 16^h 04^m 48.95^s +70° 15' 42.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 16048+7016 STTA 143 AB (HD 145309) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		16048+7016	HDS2269	Aa,Ab	292	0.2
Show		16048+7016	STTA143	AB	83	46.9
Show		16046+7022	RAO 598		3	0.7	7
Show		16041+7027	TDS9746		62	0.6	12
Show		16004+7031	LDS1834		79	5.9	28
Show		16095+6959	LDS1839		242	71.2	31
Show		16049+7056	BAZ 6		212	1.6	39
Show		16038+7055	LDS1836		204	6.2	40
Show		15583+7054	A 1134		29	2.4	50
Show		16040+7107	MLR 178		170	6.6	52
Show		16148+7056	LLO 11		239	0.6	65
Show		15539+7052	TDS 790		240	1.2	66
Show		16115+7113	UC 3127		62	48.8	67
Show		15599+6914	ARY 12		248	124.2	68
Show		16055+6900	A 1135		70	4.5	76
Show		15501+7041	A 1131		328	1.2	78
Show		16157+7113	LDS1841		48	9.7	79
Show		16182+6917	LDS1842		220	77.7	92
Show		15495+7110	KPP3971		230	1.6	94
Show		15570+7143	LDS1831		146	250.8	96
Show		16135+7147	A 1136		9	0.7	101
Show		15583+6839	LDS2365		295	9.6	103
Show		15497+7132	LDS1830	AB	288	4.3	107
Show		15497+7132	LDS1830	AC	192	28.0	107
Show		15574+6833	DAM 87	AB	133	10.6	110
Show		15500+6857	LDS2358		31	40.0	111
Show		15509+6842	A 1133		230	1.2	120
Show		16070+6814	UC 3117		274	23.1	123
Show		16171+6827	LDS2373		350	7.0	126
Show		16232+6843	LDS1845		355	10.9	134
Show		16154+6812	AZC 174		108	10.4	137
Show		15595+6800	UC 3100		90	26.2	139
Show		16090+7234	STF2036	AB	238	2.2	140
Show		16090+7234	HJ 3345	AC	166	14.3	140
Show		16035+7237	SKF2726		149	4.9	142
Show		16046+7254	TDS9749		191	2.2	159
Show		16181+7257	LDS1843		117	15.3	174
Show		16095+6722	HDS2281		305	0.1	176
Show		16206+6740	HJL 234		161	9.5	178
Show		15568+7314	PKO 30	AB	140	11.2	183
Show		15568+7314	PKO 30	AC	157	57.2	183
Show		16126+7315	LDS1840		36	5.7	184
Show		16128+6714	TDS9797		67	0.6	187
Show		16167+6714	ENG 57		14	64.5	193
Show		15518+7319	UC 3072		39	42.1	194
Show		16004+7331	MLR 195		297	1.1	197
Show		16236+6721	LDS2380		273	9.1	202
Show		16132+7339	MLR 196		235	0.7	208
Show		15473+7327	MLR 193		4	0.6	209
Show		16003+7356	MLR 349		312	8.3	222
Show		16128+6633	TDS9798		326	0.5	227

WDS 16048+7016 : COMPONENTS

	A	Ab
Ab	pa=320.1° sep=0.11"
B	pa=69.0° sep=16.84"	pa=69.3° sep=16.88"

16048+7016 A

Name	HD 145309	Coord arcsec 2000	160448.95+701542.0	Mag	6.87	Spectral class	A0 (white)
PmRA	6.00	PmDE	26.0	SAO	8415	HIP	78761
Tycho2	4422-02073-1	HD	145309	GC	21669	BD	BD+70 863

Tycho2

Tycho2	4422-02073-1	Pflag		RAmdeg	241.20398903	DEmdeg	70.26171062
PmRA	5.0	PmDE	24.0	E RAmdeg	4	E DEmdeg	4
E pmRA	1.1	E pmDE	1.2	EpRAm	1991.46	EpDEm	1991.53
Num	13	Q RAmdeg	1.2	Q DEmdeg	1.2	Q pmRA	1.4
Q pmDE	1.2	BTmag	7.011	E BTmag	0.015	VTmag	6.870
E VTmag	0.010	Prox	469	TYC	T	HIP	78761
CCDM	AC	RAdeg	241.20395556	DEdeg	70.26165583	EpRA 1990	1.78
EpDE 1990	1.77	E RAdeg	3.9	E DEdeg	3.8	Posflg	P
Corr	0.0

SAO

SAO	8415	DelFlag		RA1950		PmRA1950	0.0042
DE1950		PmDE1950	0.033	Vmag	6.7	SpType	A0
Double code		Source	70	CatNum	21669	DM	BD+70 863
DMcomp		BDsup		HD	145309	M HD	0
GC	21669	RA1950rad	4.21054147	DE1950rad	1.22863257	PmRA2000	0.0054
PmDE2000	0.035

Hipparcos

Catalog	H	HIP	78761	Proxy	H	RAhms	16 04 48.95
DEdms	+70 15 42.0	Vmag	6.85	VarFlag		R Vmag	H
RAdeg	241.204	DEdeg	70.2617	AstroRef	*	Plx	7.04
CCDM	16049+7016	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AC
Theta	292	Rho	0.23	HD	145309	BD	BD+70 863
CD		CP		Dm number	+70 863	VIred	0.11
SpType	A0	R SpType		Coord arcsec 2000	160448.95+701542.0

Hipparcos 2

HIP	78761	Sn	55	So	3	Nc	2
RArad	4.2098031096	DErad	1.2262971853	Plx	7.71	PmRA	6.29
PmDE	25.97	E RArad	0.41	E DErad	0.42	E Plx	0.45
E pmRA	0.43	E pmDE	0.5	Hpmag	6.9005	E Hpmag	0.001
SHp	0.007	VA	0	BV	0.128	E BV	0.008
VI	0.14

16048+7016 Ab

Coord arcsec 2000

160448.94+701542.1

Mag

8.56

Calc delta mag

1.39

Calc coord

yes

16048+7016 B

Coord arcsec 2000	160452.05+701548.0		Mag	8.78		PmRA	5.00		PmDE	26.0
Calc delta mag	1.61		Calc coord	yes