All names: 0306+663, LSR J0310+6634, PSO J047.7457+66.5659, PM J03109+6634, 2MASS J03105758+6634022, Gaia DR2 492442090962517376, WDJ031057.60+663402.63, 03109+6634, USNO-B1.0 1565-00064531, TIC 275585500, Gaia EDR3 492442090962517376, J0310+6633, LSPM J0310+6634, Gaia DR3 492442090962517376
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | Leggett et al. 2018 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 10 59.44 (0.05) | 03 10 59.38 (0.07) | 03 10 59.38 (0.07) | 03 10 59.44 | 03 10 57.60 (0.05) | 03 10 59.38 | ||||||||
| Declination | 66 33 55.67 (0.07) | 66 33 55.88 (0.09) | 66 33 55.88 (0.09) | 66 33 55.67 | 66 34 02.64 (0.07) | 66 33 55.88 | ||||||||
| Spectral type | DC | DC | DC | DC | DC10.7 | DC | DC | DC10 | ||||||
| Effective temperature | [K] | 4681.0 (53) | 4719.0 (8) | 4580.7 (54) | 4585.0 (35) | 4707.0 (78) | 4620.0 (662) | 4712.0 (31) | ||||||
| log(g) | [cgs] | 7.82 (0.04) | 7.88 (0.007) | 7.78 (0.04) | 7.78 (0.03) | 7.89 (0.05) | 8.00 (0) | 7.85 (0.02) | ||||||
| Mass | [M☉] | 0.472 (0.02) | 0.508 (0.006) | 0.451 (0.01) | 0.506 (0.04) | 0.58 (0.1) | 0.491 (0.01) | |||||||
| log(Luminosity) | [L☉] | -4.19 | ||||||||||||
| Cooling age | [Gyr] | 5.9000 | 4.8210 (0.3) | 5.5030 (0.6) | ||||||||||
| 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] | 26.04 (0.1) | 26.04 (0.1) | 26.11 (0.1) | 26.11 (0.1) | 26.11 (0.1) | 26.48 (0.6) | 26.11 (0.1) | 26.04 | 26.04 (0.1) | 26.11 (0.1) | |||
| Distance | [pc] | 38.40 (0.1) | 38.40 (0.1) | 38.30 (0.2) | 38.29 (0.2) | 38.29 (0.2) | 37.76 (0.8) | 38.29 (0.2) | 36.40 (9) | 38.40 | 38.40 (0.1) | 38.29 (0.2) | ||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 684.7164097 (0.06) | 684.8386505 (0.1) | 684.716 (0.06) | 684.8386505 | |||||||||
| Proper motion (declination) | [mas/yr] | -435.7667289 (0.09) | -435.5865868 (0.2) | -435.767 (0.09) | -435.5865868 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.80 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 17.70 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.59 (0.1) | 16.55 (0.1) | 16.55 | 16.55 (0.1) | ||||||||||
| H magnitude | 16.30 (0.2) | 16.30 (0.2) | 16.30 | 16.30 (0.2) | ||||||||||
| K magnitude | 15.31 (0.03) | 15.31 | ||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | 18.67 (0.02) | |||||||||||||
| r magnitude | 17.85 (0.006) | |||||||||||||
| i magnitude | 17.55 (0.005) | |||||||||||||
| z magnitude | 17.45 (0.007) | |||||||||||||
| G magnitude | 17.89 (0.01) | 17.91 | 17.91 | 17.89 | 17.89 (0.003) | 17.91 | ||||||||
| BP magnitude | 18.44 (0.01) | 18.47 | 18.47 | |||||||||||
| RP magnitude | 17.20 (0.006) | 17.20 | 17.20 | |||||||||||
| Pan g magnitude | 18.59 (0.003) | 18.59 (0.003) | 18.67 (0.02) | |||||||||||
| Pan r magnitude | 17.87 (0.004) | 17.87 (0.004) | 17.85 (0.006) | |||||||||||
| Pan i magnitude | 17.56 (0.009) | 17.56 (0.009) | 17.55 (0.005) | |||||||||||
| Pan z magnitude | 17.46 (0.01) | 17.46 (0.01) | 17.45 (0.007) | |||||||||||
| Pan y magnitude | 17.41 (0.002) | 17.41 (0.002) | 17.38 (0.01) | |||||||||||
| E(B-V) | 0.001 | |||||||||||||
* 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.