SN 2020udy
- Host galaxy
- NGC 0812
- Right ascension (α)
- 31.71 deg
- Declination (δ)
- 44.59 deg
- Distance (d)
- 57.26 Mpc ± 11.13 Mpc
- Recession velocity (vrec)
- 5106 km/s Virgo infall + Great Attractor corrected
- Redshift (z)
- 0.02
- Photometry
- Yes · 360 observations
- Spectra
- 1 spectrum
Measurements
Each column groups the values reported together by one source entry. Empty cells mean that source did not report that property.
| Publications | Singh et al. (2024) | Maguire et al. (2023) | Magee et al. (2025) |
|---|---|---|---|
| Milky Way reddening (E(B−V)MW) | 0.07 mag | 0.07 mag | N/A |
| Absolute peak magnitude — B band (MB) | −17.34 mag ± 0.42 mag | N/A | N/A |
| Absolute peak magnitude — r band (Mr) | −17.78 mag ± 0.42 mag | −17.99 mag ± 0.74 mag | −18.43 mag ± 0.15 mag |
| Absolute peak magnitude — V band (MV) | −17.6 mag ± 0.42 mag | N/A | N/A |
| Apparent peak magnitude — B band (mB) | 16.72 mag ± 0.02 mag | N/A | N/A |
| Apparent peak magnitude — r band (mr) | 16.18 mag ± 0.03 mag | 15.97 mag ± 0.61 mag | N/A |
| Apparent peak magnitude — V band (mV) | 16.4 mag ± 0.01 mag | N/A | N/A |
| Decline over 15 days — B band (Δm15(B)) | 1.36 mag | N/A | N/A |
| Decline over 15 days — r band (Δm15(r)) | 0.49 mag | N/A | N/A |
| Decline over 15 days — V band (Δm15(V)) | 0.45 mag | N/A | N/A |
| Explosion time (texp) | 59115.7 d | N/A | 59115.42 d |
| Ejecta mass (Mej) | 1.39 M☉ | N/A | N/A |
| Nickel mass (MNi) | 0.08 M☉ | N/A | N/A |
| Peak bolometric luminosity (Lbol) | 2.06 10^42 erg/s | N/A | N/A |
| Rise time (trise) | N/A | N/A | 20.8 d |
| Photometric blueshift (vph) | 8000 km/s | N/A | N/A |
| TARDIS model velocity (vTARDIS) | 8600 km/s | N/A | N/A |
Light curve
Apparent magnitude by reported observation time.
Chart data loads when this section becomes visible.
Spectrum
Compare up to 10 selected full-resolution observed spectra on one chart. Raw flux is shown by default; normalization is an explicit display option.
Spectrum choices load when this section becomes visible.
Move across the chart to inspect the nearest point in each selected spectrum.