Close stellar conjunctions of α Centauri A and B until 2050 - An mK = 7.8 star may enter the Einstein ring of α Cen A in 2028

P. Kervella; F. Mignard; A. Mérand; F. Thévenin

doi:10.1051/0004-6361/201629201

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Volume 594 (October 2016)

A&A, 594 (2016) A107

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Table B.2

Astrometry of the stars approached by α Cen A and B until 2031.

Date	Band	MJD^a	RA	Dec	σ_rel [″] ^b	Instrument

Star S1
2000-03-12	K_s	51 615.383	14:39:25.277	−60:49:49.57	0.30	2MASS^c
2004-02-29	I	53 064.271	14:39:25.228	−60:49:49.60	0.05	SUSI2
2004-04-02	Z	53 097.121	14:39:25.224	−60:49:49.60	0.05	SUSI2
2004-04-02	I	53 097.243	14:39:25.223	−60:49:49.64	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:25.224	−60:49:49.67	0.05	SOFI

Star S2
2000-03-12	K _s	51 615.383	14:39:24.291	−60:49:53.66	0.20	2MASS^c
2004-02-26	V	53 061.325	14:39:24.284	−60:49:53.79	0.10	SUSI2
2004-02-29	I	53 064.271	14:39:24.285	−60:49:53.80	0.05	SUSI2
2004-02-29	V	53 064.329	14:39:24.284	−60:49:53.77	0.10	SUSI2
2004-04-02	Z	53 097.121	14:39:24.284	−60:49:53.83	0.05	SUSI2
2004-04-02	V	53 097.181	14:39:24.287	−60:49:53.77	0.10	SUSI2
2004-04-02	I	53 097.243	14:39:24.284	−60:49:53.75	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:24.288	−60:49:53.80	0.05	SOFI
2016-03-27	K _s	57 474.405	14:39:24.287	−60:49:53.80	0.06	NACO

Star S3
2000-03-12	K _s	51 615.383	14:39:24.279	−60:49:46.03	0.20	2MASS^c
2004-02-25	R	53 060.277	14:39:24.271	−60:49:46.02	0.05	SUSI2
2004-02-29	I	53 064.271	14:39:24.266	−60:49:46.05	0.05	SUSI2
2004-04-02	Z	53 097.121	14:39:24.264	−60:49:46.07	0.05	SUSI2
2004-04-02	I	53 097.243	14:39:24.269	−60:49:46.07	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:24.269	−60:49:46.07	0.05	SOFI

Star S4
2004-02-25	R	53 060.277	14:39:23.472	−60:49:42.97	0.05	SUSI2
2004-02-29	I	53 064.271	14:39:23.482	−60:49:42.97	0.05	SUSI2
2004-02-29	V	53 064.329	14:39:23.477	−60:49:42.97	0.10	SUSI2
2004-04-02	Z	53 097.121	14:39:23.467	−60:49:43.04	0.05	SUSI2
2004-04-02	V	53 097.181	14:39:23.482	−60:49:42.97	0.10	SUSI2
2004-04-02	I	53 097.243	14:39:23.477	−60:49:42.97	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:23.481	−60:49:42.89	0.05	SOFI
2016-03-27	K _s	57 474.405	14:39:23.485	−60:49:42.91	0.06	NACO

Star S5
2000-03-12	K _s	51 615.383	14:39:21.600	−60:49:52.84	0.08	2MASS^d
2004-04-02	Z	53 097.121	14:39:21.589	−60:49:52.82	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:21.585	−60:49:52.93	0.05	SOFI
2016-03-27	K _s	57 474.405	14:39:21.586	−60:49:52.89	0.06	NACO

Star S6
2004-02-25	R	53 060.277	14:39:20.523	−60:49:41.41	0.05	SUSI2
2004-02-29	I	53 064.271	14:39:20.528	−60:49:41.37	0.05	SUSI2
2004-02-29	V	53 064.329	14:39:20.528	−60:49:41.37	0.10	SUSI2
2004-04-02	Z	53 097.121	14:39:20.513	−60:49:41.48	0.05	SUSI2
2004-04-02	V	53 097.181	14:39:20.523	−60:49:41.41	0.10	SUSI2
2004-04-02	I	53 097.243	14:39:20.523	−60:49:41.37	0.05	SUSI2
2009-02-25	J _s	54 887.356	14:39:20.518	−60:49:41.41	0.05	SOFI

Notes. The listed coordinates are referenced to the 2MASS frame (ICRS).

^(a)

MJD is the average modified julian date of the measurement.

^(b)

σ_rel is the position uncertainty with respect to the 2MASS frame in arcseconds, including statistical uncertainty and systematic offset between instruments (see Sect. 2.4).

^(c)

The coordinates are measured on the 2MASS Atlas image in the K_s band.

^(d)

The coordinates of S5 are taken from the 2MASS Point Source catalog.

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