Table 3
Close approaches within ρ = 5″ of α Cen A or B between 1st January 2016 and 25 December 2049 for background stars brighter than magnitude m = 16 at visible wavelengths (VRIZ) and m = 15 in the near-infrared (JHK).
| ⋆ a | ρmin [″] | Dateb | #c | K07d | m V | ΔV | m I | ΔI | m K | ΔK | RA | Dec | Epoch | μ α e | μ δ d | σ μ d |
|
|
||||||||||||||||
| B | 0.205 ± 0.177 | 2021-05-03 | S1 | 1266 | 20.00.5 | 18.7 | 17.60.2 | 17.2 | 13.580.17 | 14.2 | 14:39:25.224 | −60:49:49.67 | 2009.152 | –5 | –12 | 12 |
| A | 1.643 ± 0.112 | 2023-04-27 | S2 | 1184 | 15.70.2 | 15.7 | 13.30.2 | 13.9 | 11.140.03 | 12.6 | 14:39:24.283 | −60:49:53.80 | 2016.236 | +2 | –2 | 5 |
| B | 1.354 ± 0.186 | 2023-12-12 | S3 | 1181 | 19.70.3 | 18.4 | 16.00.2 | 15.6 | 12.890.11 | 13.5 | 14:39:24.264 | −60:49:46.03 | 2009.152 | +1 | −4 | 11 |
| B | 2.433 ± 0.119 | 2024-10-26 | S4 | 1113 | 17.50.2 | 16.2 | 15.90.2 | 15.5 | − | − | 14:39:23.485 | −60:49:42.91 | 2016.236 | +6 | +8 | 5 |
| A | 0.015 ± 0.135 | 2028-05-06 | S5 | 0951 | 21.50.9 | 21.5 | 18.70.3 | 19.3 | 7.760.02 | 9.3 | 14:39:21.586 | −60:49:52.89 | 2016.236 | −5 | −5 | 5 |
| B | 0.269 ± 0.277 | 2031-05-25 | S6 | 0856 | 16.90.2 | 15.6 | 15.40.2 | 14.9 | − | − | 14:39:20.518 | −60:49:41.41 | 2009.152 | −6 | −1 | 11 |
|
|
||||||||||||||||
| B | 0.194 ± 0.318 | 2034-11-20 | S7 | 0717 | 17.10.2 | 15.8 | 15.30.2 | 14.9 | − | − | 14:39:18.629 | −60:49:41.23 | 2004.252 | − | − | − |
| B | 3.417 ± 0.338 | 2036-11-28 | S8 | 0674 | 22.91.0 | 21.5 | 19.20.3 | 18.8 | 12.840.08 | 13.4 | 14:39:18.017 | −60:49:37.33 | 2004.252 | − | − | − |
| B | 0.216 ± 0.342 | 2037-05-28 | S9 | 0601 | 22.21.0 | 20.9 | 19.90.4 | 19.5 | 11.910.05 | 12.5 | 14:39:17.119 | −60:49:42.18 | 2004.252 | − | − | − |
| B | 0.487 ± 0.381 | 2041-04-29 | S10 | 0463 | − | − | − | − | 10.670.04 | 11.3 | 14:39:15.142 | −60:49:43.66 | 2004.252 | − | − | − |
| A | 0.263 ± 0.385 | 2041-10-15 | S11 | 0462 | 17.60.2 | 17.6 | 15.80.2 | 16.5 | − | − | 14:39:15.107 | −60:49:34.88 | 2004.252 | − | − | − |
| B | 0.752 ± 0.382 | 2041-06-09 | S12 | 0438 | 14.60.2 | 13.2 | 13.30.2 | 12.8 | − | − | 14:39:14.753 | −60:49:42.66 | 2004.252 | − | − | − |
| A | 1.120 ± 0.395 | 2042-10-18 | S13 | 0420 | − | − | − | − | 13.170.08 | 14.7 | 14:39:14.508 | −60:49:34.19 | 2004.252 | − | − | − |
| B | 3.168 ± 0.420 | 2045-04-27 | S14 | 0361 | 23.11.0 | 21.8 | 19.10.3 | 18.6 | 13.050.06 | 13.7 | 14:39:13.375 | −60:49:39.35 | 2004.252 | − | − | − |
| B | 2.600 ± 0.429 | 2046-05-02 | S15 | 0313 | − | − | 15.70.2 | 15.3 | − | − | 14:39:12.596 | −60:49:45.89 | 2004.252 | − | − | − |
| B | 4.261 ± 0.430 | 2046-05-16 | S16 | 0296 | − | − | 18.10.2 | 17.7 | 13.020.06 | 13.6 | 14:39:12.262 | −60:49:47.38 | 2004.252 | − | − | − |
| A | 3.121 ± 0.454 | 2048-10-24 | S17 | 0251 | 14.00.2 | 14.0 | 12.60.2 | 13.3 | 11.780.04 | 13.3 | 14:39:11.421 | −60:49:28.24 | 2004.252 | − | − | − |
| B | 0.269 ± 0.460 | 2049-06-12 | S18 | 0213 | 22.81.0 | 21.5 | 18.50.2 | 18.1 | 12.740.09 | 13.3 | 14:39:10.515 | −60:49:41.44 | 2004.252 | − | − | − |
Notes. The listed S star coordinates (ICRS) correspond to the indicated measurement epoch (no proper motion correction is included). The contrast with the corresponding α Cen star is listed in the ΔV, ΔI and ΔK columns. The error bars on the photometry are given in subscript of the corresponding values.
The uncertainty on the closest approach date is linearly proportional to σ(ρmin) and equals approximately σ(Date) = ± 10 days for σ(ρmin) = ± 0.10″.
K07: reference number of the approached star in the catalog by Kervella & Thévenin (2007b).
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