All names: ** SKF 308B, TIC 427863042, Gaia DR3 1930213488860610176, J2301+4056, PM J23010+4056, 23010+4056, Gaia DR2 1930213488860610176, WDS J23011+4056B, EGGR 263, WD 2258+40, WD 2258+406, WD 2258+404, 2MASS J23010549+4056137, Gaia EDR3 1930213488860610176, G216-B14B, WDJ230105.51+405613.94, G 216-B14B
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 01 05.44 (0.04) | 23 01 05.45 (0.04) | 23 01 05.44 | 23 01 05.51 (0.04) | 23 01 05.45 | 23 01 07.85 | ||||||||||
| Declination | 40 56 12.38 (0.04) | 40 56 12.43 (0.05) | 40 56 12.38 | 40 56 13.95 (0.04) | 40 56 12.43 | 40 56 20.04 | ||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA5.0 | DA | ||||||||
| Effective temperature | [K] | 9555.0 (34) | 9424.0 | 9327.0 | 9852.0 (146) | 9910.0 (150) | 9880.0 (145) | 10050.0 (147) | 9729.0 (94) | |||||||
| log(g) | [cgs] | 8.07 (0.007) | 8.04 | 7.97 | 8.18 (0.06) | 8.16 (0.06) | 8.17 (0.06) | 8.42 (0.06) | 8.11 (0.01) | |||||||
| Mass | [M☉] | 0.643 (0.006) | 0.624 | 0.562 | 0.81 (0.2) | 0.7 (0.04) | 0.87 (0.04) | 0.665 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -2.95 | ||||||||||||||
| Cooling age | [Gyr] | 0.7800 | 0.7474 | 0.7177 | ||||||||||||
| 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] | 14.13 (0.05) | 14.20 (0.07) | 14.20 (0.07) | 13.96 (0.5) | 14.13 | 14.13 (0.05) | 14.20 (0.07) | ||||||||
| Distance | [pc] | 70.76 (0.3) | 70.42 (0.3) | 70.40 (0.3) | 71.60 (4) | 71.63 (3) | 36.70 (2) | 34.00 | 70.76 | 70.76 (0.3) | 70.40 (0.3) | |||||
| Composition | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -43.28892126 (0.05) | -43.41298981 (0.09) | -43.289 (0.05) | -43.41298981 | |||||||||||
| Proper motion (declination) | [mas/yr] | -97.79658945 (0.05) | -97.74892153 (0.09) | -97.797 (0.05) | -97.74892153 | |||||||||||
| Variability | NOV | |||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 15.50 | |||||||||||||||
| V magnitude | 15.50 (0.1) | |||||||||||||||
| R magnitude | ||||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.53 (0.01) | 16.56 (0.1) | ||||||||||||||
| H magnitude | ||||||||||||||||
| K magnitude | ||||||||||||||||
| u magnitude | ||||||||||||||||
| g magnitude | ||||||||||||||||
| r magnitude | ||||||||||||||||
| i magnitude | ||||||||||||||||
| z magnitude | ||||||||||||||||
| G magnitude | 16.67 (0.005) | 16.68 | 16.68 (0.002) | 16.67 | 16.67 (0.003) | 16.68 | ||||||||||
| BP magnitude | 16.74 (0.005) | 16.73 | 16.73 | |||||||||||||
| RP magnitude | 16.57 (0.005) | 16.56 | 16.56 | |||||||||||||
| Pan g magnitude | 16.69 (0.003) | 16.69 (0.004) | ||||||||||||||
| Pan r magnitude | 16.76 (0.002) | 16.76 (0.002) | ||||||||||||||
| Pan i magnitude | 16.86 (0.01) | 16.86 (0.01) | ||||||||||||||
| Pan z magnitude | 17.01 (0.001) | 17.01 (0.001) | ||||||||||||||
| Pan y magnitude | 17.09 (0.02) | 17.09 (0.01) | ||||||||||||||
| E(B-V) | 0.010 | |||||||||||||||
* 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.