All names: WD 2357+296, 1RXP J000007.3+295700, SDSS J000007.27+295700.4, PG 2357+297, Gaia DR2 2855281790092279296, Gaia DR3 2855281790092279296, 2MASS J00000725+2957003, 1RXS J000008.1+295712, 1SWASP J000007.24+295700.6, Gaia EDR3 2855281790092279296, UCAC3 240-18
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 00 07.31 (0.03) | 00 00 07.31 (0.05) | 00 00 07.31 | 00 00 07.26 (0.03) | 00 00 06.58 | ||||
| Declination | 29 56 59.79 (0.02) | 29 56 59.81 (0.03) | 29 56 59.79 | 29 57 00.48 (0.02) | 29 57 00.00 | ||||
| Spectral type | DA | DA | DA.9 | DA1 | |||||
| Effective temperature | [K] | 53190.0 (1107) | 67462.0 (5022) | ||||||
| log(g) | [cgs] | 7.60 (0.07) | 8.02 (2) | ||||||
| Mass | [M☉] | 0.54 (0.02) | 0.732 (88) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| 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] | 5.85 (0.05) | 5.81 (0.06) | 5.85 | 5.85 (0.05) | ||||
| Distance | [pc] | 171.07 (1) | 172.03 (2) | 219.00 | 171.07 | 171.07 (1) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 48.38707738 (0.06) | 48.26041471 (0.1) | 48.387 (0.06) | |||||
| Proper motion (declination) | [mas/yr] | -43.04638444 (0.03) | -42.97585364 (0.05) | -43.046 (0.03) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.77 | ||||||||
| V magnitude | 12.24 | ||||||||
| R magnitude | 15.63 (0.2) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.84 (0.09) | ||||||||
| H magnitude | 15.64 (0.2) | ||||||||
| K magnitude | |||||||||
| u magnitude | 14.40 (0.01) | ||||||||
| g magnitude | 14.79 (0.02) | ||||||||
| r magnitude | 15.29 (0.01) | ||||||||
| i magnitude | 15.68 (0.01) | ||||||||
| z magnitude | 16.02 (0.01) | ||||||||
| G magnitude | 15.04 (0.002) | 15.06 | 15.04 | 15.04 (0.003) | |||||
| BP magnitude | 14.88 (0.002) | 14.84 | |||||||
| RP magnitude | 15.36 (0.002) | 15.36 | |||||||
| Pan g magnitude | 14.87 (0.003) | ||||||||
| Pan r magnitude | 15.32 (0.003) | ||||||||
| Pan i magnitude | 15.69 (0.003) | ||||||||
| Pan z magnitude | 15.98 (0.005) | ||||||||
| Pan y magnitude | 16.17 (0.005) | ||||||||
| E(B-V) | 0.016 | ||||||||
* 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.