17187+0157 LDS 991 AB

17^h 18^m 35.15^s +01° 56' 53.1" P.A. 139.00 sep 13.0 mag 14.10,14.20 Sp DA3+M4

Coord 2000	17187+0157	Discov num	LDS 991	Comp	AB	Coord arcsec 2000	17 18 35.15 +01 56 53.1
Date first	1936	Date last	2016	Obs	13
Pa first	140	Pa last	139.3	P.A. Now (θ)	139.3°
Sep first	13.0	Sep last	12.989	Sep. Now (ρ)	12.989"
Mag pri	14.10	Mag sec	14.20	delta mag (ΔM)	0.1	Spectral class	DA3+M4 (white dwarf/red)
Pri motion ra	-436	Sec motion ra	-448
Pri motion dec	-285	Sec motion dec	-283
Notes	T (Parallax indicates physical)

rPM=0.023 (< 0.3, Physical double)

This double is physical.

17187+0157 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			17 18 35 +01 56 53	LDS 991 AB	2016	13	139	13.0	14.10	14.20	0.10		<===
Show			17 18 36 +01 56 43	LDT 14 Ba,Bb	2017	2	55	0.5	14.00	15.10	1.10

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Ophiuchus

WDS 17187+0157 LDS 991 AB : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
LDS		Luyten p.m. catalog (from additional DD list)	...................
LDS		= Lowell Discovery Telescope
LDT2021	S -	Clark, C.A., van Belle, G.T. & Horch, E.P.	2021RNAAS...5..280C
LDT2021		Research Notes of the AAS 5, 280, 2021
LDT2022	S+	Clark, C.A., van Belle, G.T., Ciardi, D.R., Lund, M.B., Howell, S.B., Everett,	2022AJ....163..232C
LDT2022	+A	M.E., Beichman, C.A. & Winters, J.G.
LDT2022		AJ 163, 232, 2022
LDT2022b	S	Clark, C.A., van Belle, G.T., Horch, E.P., von Braun, K., Ciardi, D.R., Winters,	2022AJ....164...33C
LDT2022b		J.G. & Kiman, R.
LDT2022b		AJ 164, 33, 2022

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17187+0157	LDS 991	AB	2016	13	139	13.0	14.10	14.20	DA3+M4	T	171835.15+015653.1

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

WDS 17187+0157 LDS 991 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 17187+0157 LDS 991 AB : MEASURES

No records found.

WDS 17187+0157 : 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 17187+0157 : ALADIN DSS IMAGE @ 17^h 18^m 35.15^s +01° 56' 53.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 17187+0157 LDS 991 AB : 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		17187+0157	LDS 991	AB	139	13.0
Show		17187+0157	LDT 14	Ba,Bb	55	0.5	1
Show		17177+0207	BAL1934		235	12.6	17
Show		17207+0207	UC 3329		304	32.2	33
Show		17168+0133	TDT 296	AB	84	0.8	36
Show		17168+0133	GII 243	Aa,Ab	143	0.2	36
Show		17168+0133	TDT 296	AC	19	3.7	36
Show		17162+0211	CHR 61		68	0.2	38
Show		17214+0206	TDT 318		17	0.4	44
Show		17162+0131	UC 3312		262	45.7	44
Show		17215+0203	BAL1935		26	18.7	46
Show		17211+0127	STF2150	AB	214	11.7	46
Show		17211+0127	STF2150	AC	56	160.8	46
Show		17173+0239	BAL1933		60	14.8	47
Show		17174+0245	SKF1593		110	14.0	52
Show		17165+0113	HJ 854		357	20.7	54
Show		17168+0259	A 2239		289	3.4	69
Show		17230+0157	J 3211		144	4.0	69
Show		17236+0149	J 2505		137	1.6	76
Show		17135+0221	UC 3307		185	17.8	80
Show		17238+0219	BAL1936		315	3.4	82
Show		17214+0042	RST5429		305	1.6	87
Show		17211+0034	CVR 860		78	26.9	92
Show		17127+0132	CLZ 70		145	22.4	92
Show		17166+0325	STF2141	AB	123	39.8	93
Show		17166+0325	SHY 715	AC	61	999.9	93
Show		17166-0027	A 2984		27	0.7	95
Show		17217+0321	BAL2438		128	3.1	96
Show		17217+0322	DAM1250		282	14.8	98
Show		17244+0242	TDS 865		144	1.1	99
Show		17142-0038	YMG 87		171	0.5	103
Show		17204+0337	J 3296		258	3.6	104
Show		17240-0050	STF2156		36	3.8	105
Show		17241+0304	STF2158		77	23.4	106
Show		17250+0108	RST5431	AB	161	2.7	108
Show		17250+0108	SCA 199	Aa,Ab	159	0.2	108
Show		17258+0207	CSN 8		269	7.3	108
Show		17253+0239	GWP2711		215	33.0	109
Show		17210-0014	RST5079	AB	63	1.3	110
Show		17210-0014	GII 245	Aa,Ab	119	0.1	110
Show		17227+0333	UC 3333		92	7.2	115
Show		17262+0205	BAL1937		204	12.0	115
Show		17126+0043	UC 3304		68	12.6	117
Show		17246+0311	BAL2439		20	13.5	117
Show		17241-0033	KPP1164		202	9.1	118
Show		17265+0142	KPP 605		194	5.6	119
Show		17174+0358	DOO 65		27	2.8	125
Show		17229-0009	SHN 219		-1	0.1	126
Show		17269+0219	A 2243		301	2.0	126
Show		17110+0302	HDS2426		195	0.9	132
Show		17117-0033	LDS4724		273	15.3	133

WDS 17187+0157 : COMPONENTS

	A	B
B	pa=138.7° sep=13.18"
Bb	pa=136.4° sep=13.25"	pa=55.0° sep=0.53"

17187+0157 A

Coord arcsec 2000	171835.15+015653.1		Mag	14.1		Spectral class	DA3 (white dwarf)		PmRA	-436.00
PmDE	-285.0

17187+0157 B

Coord arcsec 2000	171835.73+015643.2		Coord calc	171835.71+015643.3		Mag	14		Mag composta	14.2
Spectral class	M4 (red)		PmRA	-448.00		PmDE	-283.0		Calc delta mag	0.1

17187+0157 Bb

Coord arcsec 2000

171835.76+015643.5

Mag

15.1

Calc delta mag

Calc coord

yes