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Table 1
Coordinates, optical, and infrared photometry from public databases and our own measurements, along with our parallax and proper motion measurements and physical properties derived for 2M1540.
| Type | Value |
|
|
|
| RA2MASS (J2000) | 15:40:43.42 |
| Dec2MASS (J2000) | −51:01:35.7 |
| RAWISE (J2000) | 15:40:45.65 |
| DecWISE (J2000) | −51:01:39.3 |
| μαcosδ | +1.954±0.002 arcsec/yr |
| μ δ | −0.330±0.003 arcsec/yr |
| π | 0.228±0.024 arcsec |
| V (EFOSC2) | 15.26±0.06 mag |
| R EFOSC2 | 13.23±0.04 mag |
| SDSSr (EFOSC2) | 13.88±0.07 mag |
| SDSSi (EFOSC2) | 11.60±0.04 mag |
| SDSSz (EFOSC2) | 10.76±0.05 mag |
| J 2MASS | 8.961±0.025 mag |
| H 2MASS | 8.299±0.038 mag |
| K s 2MASS | 7.943±0.040 mag |
| w1 | 7.651±0.024 mag |
| w2 | 7.459±0.023 mag |
| w3 | 7.252±0.019 mag |
| w4 | 7.028±0.079 mag |
| M J(2MASS) | 10.77 mag |
| M H(2MASS) | 10.11 mag |
| M Ks(2MASS) | 9.75 mag |
| M bol | 12.81 mag |
| Spectral type | M7V±0.5 |
| T eff | 2621±100 K |
| log (L/L⊙) | –3.22 |
| Mass | 0.090 ± 0.010 M⊙ |
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