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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. 

(a)

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.

(b)

The JD maximum is 2 455 474 and minimum 2 455 468 in this case.

(c)

Typical R-band ptp amplitudes are not listed because CHS 7797 could not be reliably measured at minimum brightness.

(d)

From Rodriguez-Ledesma et al. (in prep.).

(e)

From O’dell (2001).

(f)

From this work.

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