All names: USNO-B1.0 1280-00212049, Gaia DR3 910341618586847232, WDJ084524.61+380156.36, SDSS J084524.62+380155.9, 08454+3801, Gaia DR2 910341618586847232, 2MASS J08452458+3801567, LSPM J0845+3801, PSO J131.3531+38.0315, SDSS J084524.62+380156.0, Gaia EDR3 910341618586847232, GD 94, TIC 67595083, GEN# +6.10060094, PM J08454+3801, WD 0842+382, SDSS J084524.63+380156.0, NLTT 20165, KUV 08422+3813, SDSS J084524.63+380155.9, GALEX J084524.7+380154, J0845+3801, WIRED J084524.62+380155.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Tremblay et al. 2011 | Kawka et Vennes 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 45 24.76 (0.04) | 08 45 24.62 | 08 45 24.75 (0.05) | 08 45 24.76 | 08 45 24.61 (0.04) | 08 45 24.75 | 08 45 24.63 | 08 45 23.35 | 08 45 24.63 | ||||||||||||
| Declination | 38 01 53.23 (0.02) | 38 01 55.94 | 38 01 53.33 (0.04) | 38 01 53.23 | 38 01 56.36 (0.02) | 38 01 53.33 | 38 01 56.04 | 38 02 03.48 | 38 01 55.96 | ||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA6.2 | DA | DA_auto | DA6.3 | DA | DA | ||||||||
| Effective temperature | [K] | 8060.0 (38) | 7890.0 (100) | 7913.0 | 7644.0 | 7940.0 (114) | 8070.0 (117) | 8060.0 (20) | 8020.0 (50) | 8096.0 (37) | 8310.0 (16) | 7955.0 (19) | |||||||||
| log(g) | [cgs] | 8.00 (0.008) | 7.96 (0.03) | 7.95 | 7.85 | 8.00 (0.05) | 8.06 (0.06) | 8.11 (0.03) | 8.16 (0.06) | 8.01 (0.008) | 8.43 (0.03) | 7.97 (0.03) | |||||||||
| Mass | [M☉] | 0.592 (0.007) | 0.57 (0.02) | 0.567 | 0.491 | 0.59 (0.03) | 0.63 (0.04) | 0.66 (0.02) | 0.69 (0.04) | 0.599 (0.007) | 0.579 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | -3.23 | |||||||||||||||||||
| Cooling age | [Gyr] | 1.0900 | 1.0500 (0.05) | 1.0350 | 1.0320 | 1.2589 | |||||||||||||||
| 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] | 24.79 (0.05) | 24.80 (0.07) | 24.80 (0.07) | 24.80 (0.07) | 24.79 | 24.79 (0.05) | 24.80 (0.07) | |||||||||||||
| Distance | [pc] | 40.34 (0.07) | 40.32 (0.1) | 40.32 (0.1) | 40.32 (0.1) | 38.80 (1) | 38.00 | 35.00 | 40.34 | 40.34 (0.08) | 40.32 (0.1) | ||||||||||
| Composition | H | H | H | H | H | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 109.6883767 (0.04) | 109.7439475 (0.1) | 109.688 (0.04) | 109.744 | 109.1 | |||||||||||||||
| Proper motion (declination) | [mas/yr] | -195.338013 (0.04) | -195.3488138 (0.07) | -195.338 (0.04) | -195.349 | -197.2 | |||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 16.31 | ||||||||||||||||||||
| V magnitude | |||||||||||||||||||||
| R magnitude | 15.70 | ||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 15.51 (0.007) | 15.49 (0.05) | 15.49 (0.05) | ||||||||||||||||||
| H magnitude | 15.45 (0.1) | 15.45 (0.1) | 15.45 (0.1) | ||||||||||||||||||
| K magnitude | 15.43 (0.2) | 15.43 (0.2) | 15.43 (0.2) | ||||||||||||||||||
| u magnitude | 16.48 (0.006) | 16.48 (0.006) | 16.48 (0.006) | 16.48 (0.006) | 16.51 (0.01) | 16.50 | 16.50 (0.01) | ||||||||||||||
| g magnitude | 16.03 (0.004) | 16.04 (0.004) | 16.04 (0.004) | 16.05 (0.02) | 16.05 | 16.05 (0.02) | |||||||||||||||
| r magnitude | 15.98 (0.005) | 16.00 (0.003) | 15.98 (0.005) | 16.00 (0.02) | 16.00 | 16.00 (0.02) | |||||||||||||||
| i magnitude | 16.02 (0.005) | 16.02 (0.002) | 16.02 (0.005) | 16.00 (0.03) | 16.00 | 16.01 (0.02) | |||||||||||||||
| z magnitude | 16.11 (0.008) | 16.12 (0.005) | 16.11 (0.008) | 16.12 (0.02) | 16.12 | 16.11 (0.02) | |||||||||||||||
| G magnitude | 15.94 (0.002) | 15.96 | 15.94 | 15.94 (0.003) | 15.96 | ||||||||||||||||
| BP magnitude | 16.07 (0.002) | 16.06 | 16.06 | ||||||||||||||||||
| RP magnitude | 15.70 (0.002) | 15.71 | 15.71 | ||||||||||||||||||
| Pan g magnitude | 16.06 (0.01) | 16.05 (0.01) | 16.05 (0.01) | ||||||||||||||||||
| Pan r magnitude | 16.00 (0.003) | 16.00 (0.003) | 16.00 (0.003) | ||||||||||||||||||
| Pan i magnitude | 16.02 (0.002) | 16.02 (0.002) | 16.02 (0.002) | ||||||||||||||||||
| Pan z magnitude | 16.12 (0.005) | 16.12 (0.005) | 16.12 (0.005) | ||||||||||||||||||
| Pan y magnitude | 16.16 (0.008) | 16.16 (0.008) | 16.16 (0.008) | ||||||||||||||||||
| 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.