Table 2
Relevant properties of CHS 7797.
| Parameter | Value | |
|
|
||
| Position (2000) | RA = 05 35 08.7 Dec = −05 31 27.3 | |
|
|
||
| Photometrya | Maximum (JD = 2 455 137) | Minimum (JD = 2 455 130) |
| I | 17.35 | 19.01 |
| R − Ib | 2.25 | 1.9 |
| I − J | 2.24 | 2.25 |
| J − K | 1.4 | 1.5 |
| Ks − 3.6 | 1.3 | 1.8 |
| Ks − 4.5 | 2.2 | 3.1 |
|
|
||
| Typical ptp amplitudesc | I = 1.7 z′ = 1.7 J = 1.6 K = 1.4 [3.6] = 0.9 [4.5] = 0.6 | |
|
|
||
| Spectral type | M6d | |
| T eff | 2840−3000 | |
| Distance (pc) | 450e | |
| Luminosity (L⊙) | 0.01−0.06f | |
| Mass (M⊙) | 0.055−0.1f | |
| Age (Myr) | 1e | |
Notes.
When available, the quasi-simultaneous photometric observations were used for the typical photometric values, since as seen in Fig. 3 there are variations in the minimum/maximum levels.
Typical R-band ptp amplitudes are not listed because CHS 7797 could not be reliably measured at minimum brightness.
From O’dell (2001).
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