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Table 2.
Gaia DR2 and HST parallaxes of the five AM CVn stars which were measured using the HST Fine Guidance Sensor.
| HST | Gaia | |
|---|---|---|
| Source | parallax | parallax |
| (mas) | (mas) | |
| AM CVn | 1.65 ± 0.30 | 3.351 ± 0.045 |
| HP Lib | 5.07 ± 0.33 | 3.622 ± 0.053 |
| CR Boo | 2.97 ± 0.34 | N/A |
| V803 Cen | 2.88 ± 0.24 | N/A |
| GP Com | 13.34 ± 0.33 | 13.73 ± 0.06 |
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