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

Home

All issues

Volume 594 (October 2016)

A&A, 594 (2016) A107

Full HTML

Press Release

Free Access

Table 2

Positions of α Cen A and B in the ICRS coordinate frame.

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

1991-04-02	H_p	48 348.250	α Cen A	14:39:40.8985	−60:50:06.530	0.001	Hipparcos^c
2000-03-12	K _s	51 615.383	α Cen A	14:39:36.394	−60:50:03.31	0.20	2MASS^d
2009-02-25	J _s	54 887.356	α Cen A	14:39:31.813	−60:50:00.01	0.07	SOFI

1991-04-02	H _p	48 348.250	α Cen B	14:39:39.3908	−60:50:22.097	0.046	Hipparcos^c
2000-03-12	K _s	51 615.383	α Cen B	14:39:35.103	−60:50:13.56	0.20	2MASS^d
2009-02-25	J_s	54 887.356	α Cen B	14:39:30.919	−60:50:03.48	0.07	SOFI

Notes.

^(a)

MJD is the average modified julian date of the measurement.

^(b)

σ is the estimated position uncertainty in arcseconds.

^(c)

Positions taken from the original Hipparcos catalog (ESA 1997).

^(d)

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

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.