06410+0954 STF 950 AB (15 Mon)

Coord 2000	06410+0954		Discov num	STF 950		Comp	AB		Coord arcsec 2000	06 40 58.66 +09 53 44.7
Date first	1825		Date last	2018		Obs	91
Pa first	205		Pa last	213.9		P.A. Now (θ)	213.9°
Sep first	2.7		Sep last	2.991		Sep. Now (ρ)	2.991"
Mag pri	4.66		Mag sec	7.79		delta mag (ΔM)	3.13		Spectral class	O7Ve+B2: (blue/blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-007		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		114258	06 40 59 +09 53 45	CHR 168 Aa,Ab	2018	37	269	0.1	4.66	5.90	1.24	Y
Show	15 Mon	114258	06 40 59 +09 53 45	STF 950 AB	2018	91	214	3.0	4.66	7.79	3.13		<===
Show		114258	06 40 59 +09 53 45	STF 950 AC	2020	42	15	16.9	4.66	9.90	5.24
Show		114258	06 40 59 +09 53 45	STF 950 AD	2013	11	310	40.5	4.66	12.10	7.44
Show		114258	06 40 59 +09 53 45	STF 950 AE	2013	29	139	73.5	4.66	8.86	4.20
Show		114258	06 40 59 +09 53 45	STF 950 AF	2013	19	222	155.1	4.66	9.00	4.34
Show		114258	06 40 59 +09 53 45	STF 950 AG	2013	10	230	186.8	4.66	10.01	5.35
Show		114258	06 40 59 +09 53 45	STF 950 AH	2020	19	168	89.6	4.66	9.81	5.15
Show		114258	06 40 59 +09 53 45	JRN 31 AI	2013	6	155	124.3	4.66	12.84	8.18
Show		114258	06 40 59 +09 53 45	JRN 31 AJ	2013	7	143	142.9	4.66	12.54	7.88
Show		114258	06 40 59 +09 53 45	STF 950 AK	2020	14	57	106.5	4.66	10.40	5.74
Show		114258	06 40 59 +09 53 45	JRN 30 AL	2013	7	6	95.7	4.66	12.31	7.65
Show		114258	06 40 59 +09 53 45	STF 950 AM	2020	15	105	179.8	4.66	9.75	5.09
Show		114258	06 40 59 +09 53 45	STF 950 AO	2013	12	261	135.5	4.66	11.42	6.76
Show			06 41 02 +09 52 48	D 11 EH	2018	20	222	40.6	8.86	9.81	0.95
Show			06 41 02 +09 52 48	JRN 31 EI	2000	3	175	56.4	8.86	12.84	3.98
Show			06 41 02 +09 52 48	JRN 31 EJ	2000	5	147	69.0	8.86	12.54	3.68
Show			06 41 02 +09 52 48	D 11 EP	2020	30	42	3.6	8.86	10.40	1.54
Show			06 40 52 +09 51 49	STF 950 FG	2018	25	263	39.8	9.00	10.01	1.01
Show			06 40 52 +09 51 49	STF 950 FO	2015	12	342	98.3	9.00	11.42	2.42
Show			06 40 49 +09 51 44	STF 950 GO	2015	12	6	99.1	10.01	11.42	1.41
Show			06 41 04 +09 51 50	JRN 31 JI	2015	8	273	32.6	12.54	12.84	0.30
Show			06 41 05 +09 54 44	STF 950 KD	2015	6	254	123.8	10.40	12.10	1.70
Show			06 41 05 +09 54 44	JRN 30 KL	2015	8	295	85.3	10.40	12.31	1.91
Show			06 41 05 +09 54 44	STF 950 KQ	2015	4	258	114.5	10.40	17.50	7.10
Show			06 41 10 +09 53 02	STF 950 MK	2015	12	320	133.4	9.75	10.40	0.65
Show			06 41 10 +09 53 02	STF 952 MN	2018	35	116	14.1	9.75	10.05	0.30
Show			06 41 11 +09 52 56	STF 950 NK	2015	12	318	146.3	10.05	10.40	0.35

18-fold system
17 estimated visually detectable stars in this system

Name	15 Mon		Var name	S Mon		Constellation	Monoceros		SAO	114258
HIP	31978		Tycho2	0750-01880-1		Gaia DR2	3326740865570982400		HD	261938
HR	2456		GC	8720		ADS	5325		DM	BD+10 1223
BD	BD+10 1220		Flamsteed	15 Monocerotis		Flamsteed name	15 Mon		Distance	281.69
Distance ly	918.87

discov_num	notes	refcode
STF 950	A is an irregular variable, S Mon.
	While not as complex as STF 484/485, a similar method clarified
	numerous ambiguities. CHR 168Aa,Ab; STF 950AB; AC; AD; AE; AF; AK; FG;
	and D 11Ea,Eb are all unchanged.
	STF 950AS ---> STF 950AO
	D 11Eb ---> D 11EH
	JRN 31Ec ---> JRN 31EI
	JRN 31Ed ---> JRN 31EJ
	STF 950FS ---> STF 950FO
	STF 950GS ---> STF 950GO
	STF 950 ---> STF 950AH (formerly STF 950A to D 11b)
	STF 950 ---> STF 950AM (formerly STF 950A to STF 952A)
	STF 952AB ---> STF 952MN
	DOB 7AC ---> STF 950MK
	DOB 7BC ---> STF 950NK
	JRN 30CD ---> STF 950KD
	JRN 30CE ---> JRN 30KL
	Note that the WDS coordinate for STF 952 (as well as other
	associated pairs) has been changed to that of STF 950.
CHR 168	A component is an irregular variable, S Mon. See Gies (1993) for	Gie1993
	classification of the speckle companion. The spectroscopic orbit and
	current periastron passage of Aa are discussed by Gies (1997).	Gie1997
	The B component was observed and appeared to be single.
	Classifications of the B, C, D,and E components are from Hoffleit &	Hof1991
	Warren (1991), who list the E component as a close pair.	Msn1998a
	Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 3.58 +/- 1.59, 17.32, 38.90 Msun, respectively.	Mlk2012
	Distance to NGC 2264 is 719(+22-21) pc, yielding a mass sum of	MzA2019b
	45.1(+3.6-3.3) \msun.
STF 950	AC: H 3 46.	MEv2010
JRN 31	AJ: Also known as SMR 9AR.
JRN 31	AI: Also known as SMR 9AS.
JRN 31	JI: Also known as SMR 9RS.
JRN 30	AL: Also known as SMR 9AQ.

refcode	metd	author	reference
Gie1993	Sc -	Gies, D.R., Mason, B.D., Hartkopf, W.I., McAlister, H.A., Frazin, R.A., Hahula,	1993AJ....106.2072G
Gie1993		M.E., Penny, L.R., Thaller, M.L., et al.
Gie1993		AJ 106, 2072, 1993
Gie1997	Hf j	Gies, D.R., Mason, B.D., Bagnuolo, W.G. Jr., Hahula, M.E., Hartkopf, W.I.,	1997ApJ...475L..49G
Gie1997	+orb	McAlister, H.A., Thaller, M.L., McKibben, W.P., & Penny, L.R.
Gie1997		ApJL 475, 49, 1997
Hof1991	-	Hoffleit, D. & Jaschek, C.	1991bsc..book.....H
Hof1991		The Bright Star Catalogue, Fifth Revised Edition (preliminary version), 1991
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012	not -	Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.	2012A&A...546A..69M
Mlk2012		A&A 546, A69, 2012
Msn1998a	Sc j	Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G.,	1998AJ....115..821M
Msn1998a		ten Brummelaar, T.A., & McAlister, H.A.
Msn1998a		AJ 115, 821, 1998
MzA2019b	orb+-	Maiz Apellaniz, J.	2019A&A...630A.119M
MzA2019b	+not	A&A 630, 119, 2019

idgroup	discov	author
1	CHR	Center for High Ang. Res. Astronomy (speckle interferometry systems)
3	D	Dembowski, H.
174	JRN	Jorissen, A.
175	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
06410+0954	STF 950	AB	2002	73	214	2.9	4.66	7.79	O7Ve	N D	064058.66+095344.7
06410+0954	STF 950	AB	2007	74	213	2.9	4.66	7.79	O7Ve	N D	064058.66+095344.7
06410+0954	STF 950	AB	2008	78	214	2.9	4.66	7.79	O7Ve	N D	064058.66+095344.7
06410+0954	STF 950	AB	2012	82	213	2.9	4.66	7.79	O7Ve	N D	064058.66+095344.7
06410+0954	STF 950	AB	2015	83	214	3.0	4.66	7.79	O7Ve	N D	064058.66+095344.7
06410+0954	STF 950	AB	2018	86	214	3.0	4.66	7.79	O7Ve+B2:	N	064058.66+095344.7

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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