All names: SDSS J002844.19+241511.2, Gaia DR2 2806984745409075328, Gaia EDR3 2806984745409075328, Gaia DR3 2806984745409075328, SDSS J002844.19+241511.12, SDSS J002844.19+241511.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 28 44.20 (0.1) | 00 28 44.19 | 00 28 44.20 (0.1) | 00 28 44.18 (0.1) | |||||
| Declination | 24 15 11.11 (0.08) | 24 15 11.17 | 24 15 11.11 (0.1) | 24 15 11.19 (0.08) | |||||
| Spectral type | DAO | DAO | DAO | ||||||
| Effective temperature | [K] | 77399.0 (5185) | 76767.0 (2417) | ||||||
| log(g) | [cgs] | 7.07 (0.2) | 7.07 (0.09) | ||||||
| Mass | [M☉] | 0.45 (0.04) | 0.519 (0.01) | ||||||
| log(Luminosity) | [L☉] | 1.53 (0.2) | |||||||
| Cooling age | [Gyr] | 0.0001 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | 0.40 (0.1) | 0.48 (0.2) | 0.40 (0.1) | |||||
| Distance | [pc] | 2502.84 (876) | 2097.65 (779) | 2503.13 (876) | |||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 12.90832431 (0.2) | 12.78537943 (0.3) | 12.908 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -5.348050948 (0.1) | -5.496230008 (0.2) | -5.348 (0.1) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 17.17 (0.009) | 17.16 (0.02) | 17.16 (0.009) | ||||||
| g magnitude | 17.62 (0.005) | 17.65 (0.02) | 17.63 (0.005) | ||||||
| r magnitude | 18.19 (0.007) | 18.21 (0.02) | 18.19 (0.007) | ||||||
| i magnitude | 18.55 (0.01) | 18.56 (0.02) | 18.55 (0.01) | ||||||
| z magnitude | 19.00 (0.05) | 18.98 (0.04) | 18.99 (0.05) | ||||||
| G magnitude | 17.92 (0.008) | 17.95 | 17.92 (0.003) | ||||||
| BP magnitude | 17.75 (0.008) | 17.66 | |||||||
| RP magnitude | 18.30 (0.02) | 18.24 | |||||||
| Pan g magnitude | 17.71 (0.004) | ||||||||
| Pan r magnitude | 18.20 (0.005) | ||||||||
| Pan i magnitude | 18.60 (0.004) | ||||||||
| Pan z magnitude | 18.88 (0.01) | ||||||||
| Pan y magnitude | 19.08 (0.04) | ||||||||
| E(B-V) | 0.055 | ||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.