Table 2
Positions, proper motions, and photometry of the two components.
| M dwarf | T dwarf | |
|
|
||
| α | 11h18m06.99s | 11h18m07.13s |
| δ | −06°40′07.84′′ | −06°40′15.82′′ |
| i ′ | >24.86 | |
| z ′ | 22.56 ± 0.08 | |
| J | 13.84 ± 0.03 | 19.01 ± 0.02 |
| H | 13.25 ± 0.02 | 18.58 ± 0.03 |
| K s | 12.95 ± 0.03 | 18.30 ± 0.03 |
| μ α | −201 ± 11 mas/yr | −190 ± 14 mas yr-1 |
| μ δ | −49 ± 20 mas/yr | −60 ± 21 mas yr-1 |
Notes. The photometry of the M dwarf is taken from 2MASS, and the near-infrared magnitudes of the T dwarf are given in the 2MASS system. The z′ magnitude is given in the AB system used by CFHT for MegaCam2. The proper motion of the T dwarf is computed between the first and third observation epoch. The proper motions are relative to the mean motion of the stars in the field.
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