Table 1.
Errors on the reported positions of supernovae for various surveys and telescopes that have reported SNe used in this paper.
| Survey | σSN position | Reference |
|---|---|---|
| (arcsec) | ||
| ASASSN | < 1.0 | Holoien et al. (2017b) |
| Gaia alerts | 0.1 | Kostrzewa-Rutkowska et al. (2018) |
| CRTS | 0.1 ( † ) | Drake et al. (2009) |
| Pan-STARRS1 | 0.021 ( * ) | Magnier et al. (2020) |
| ATLAS | 0.07 | Tonry et al. (2018) |
Notes. ( † )CRTS does not give an accuracy, but they report declinations to 1 decimal, so we use 0.1 arcsec as the uncertainty. ( * )Pan-STARRS1 reports an RMS of 0.016 arcsec and a systematic uncertainty of 0.005 arcsec with respect to Gaia, so added linearly this becomes 0.021 arcsec.
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