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Table 7

Projected orbital separations and linear orbital movement fit results from relative astrometric measurements.

Object Proj. Change in Change
sep. separation in PAb
[AU] [mas/yr]a [°/yr]

RX J0915.5-7609 AB 25 –5.26 ± 2.80 –1.76 ± 0.67
RX J0935.0-7804 AB 69 3.88 ± 0.59 –0.59 ± 0.10
RX J0952.7-7933 AB 47 0.02c ± 0.25 –2.04c ± 0.06
RX J1014.2-7636 AB 41 10.88 ± 0.56 –2.00 ± 0.17
SZ Cha AB 845 1.27 ± 4.62 0.00 ± 0.08
Ced 110 IRS 2 AB 24 –2.66 ± 1.85 –3.11 ± 0.73
Cha Hα 2 AB 35 –7.35 ± 2.40 0.36 ± 0.85
RX J1109.4-7627 AB 13 –1.31 ± 0.58 –5.76 ± 0.28
HD 97300 AB 139 –1.52 ± 0.75 –0.34 ± 0.07
WX Cha AB 130 0.13 ± 1.38 0.11 ± 0.13
WY Cha AB 20 –0.73 ± 1.48 –0.50 ± 0.43
HJM C7-11 AB 29 –0.98 ± 0.94 –0.93 ± 0.24
Sz 41 AB 326 1.00 ± 1.36 0.10 ± 0.06
HM Anon AB 45 –1.86 ± 0.21 0.40 ± 0.07

Notes. 

(a)

Using a nominal pixel scale of 0.01324 arcsec/pixel to convert from pixel to mas.

(b)

PA is measured from N over E to S.

(c)

Possible indications present for curved orbital motion.

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