All names: [HHD2009] SDSS J0258+0109, [HH86] 0255+009, TIC 258843775, Gaia DR3 336656716828800, GALEX J025817.8+010946, Gaia DR2 336656716828800, [SGR2010] J0258+0109, SDSS J025817.89+010946.0, [LCB92] 0255+0057, LAMOST J025817.87+010946.0, HBQS 0255+0057, SDSS J025817.90+010945.9, WD 0255+009.2, WIRED J025817.87+010946.0, US 3438, 2MASS J02581788+0109458, SDSS J025817.88+010945.9, SDSS J025817.89+010945.9, SDSS J025817.87+010946.0, PB 6955
| Parameter | Unit | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 58 17.89 | 02 58 17.90 (1) | 02 58 17.87 | 02 58 17.90 (3) | 02 58 17.88 | 02 58 17.62 | 02 58 17.87 | |||||
| Declination | 01 09 45.96 | 01 09 45.87 (1) | 01 09 46.01 | 01 09 45.88 (3) | 01 09 45.92 | 01 09 46.08 | 01 09 46.00 | |||||
| Spectral type | DA+M | DA+M | DA | DA+dMe | DA+M | DA | DA+M | |||||
| Effective temperature | [K] | 33185.0 (430) | 34531.0 (686) | 35510.0 (710) | 6632.0 (60) | 6302.0 (6) | ||||||
| log(g) | [cgs] | 7.75 (0.09) | 7.68 (0.1) | 7.57 (0.1) | 7.73 (0.2) | 5.01 (0.02) | ||||||
| Mass | [M☉] | 0.53 (0.04) | 0.51 (0.05) | 0.47 (0.04) | ||||||||
| log(Luminosity) | [L☉] | -0.55 (0.06) | ||||||||||
| Cooling age | [Gyr] | 0.0062 (0.0004) | 0.0054 | |||||||||
| 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] | |||||||||||
| Distance | [pc] | 253.00 (18) | ||||||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.0 (3) | 3.8 | |||||||||
| Proper motion (declination) | [mas/yr] | -3.0 (3) | -2.8 | |||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | ||||||||
| B magnitude | 18.29 | |||||||||||
| V magnitude | 18.30 | |||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.46 (0.006) | |||||||||||
| H magnitude | 14.82 (0.005) | |||||||||||
| K magnitude | 14.56 (0.008) | |||||||||||
| u magnitude | 18.13 (0.01) | 18.09 | 18.12 (0.01) | 18.09 (0.02) | 18.08 | 18.11 (0.02) | ||||||
| g magnitude | 18.18 (0.006) | 18.18 | 18.18 (0.006) | 18.18 (0.03) | 18.17 | 18.20 (0.03) | ||||||
| r magnitude | 18.10 (0.007) | 18.08 | 18.08 (0.007) | 18.08 (0.02) | 18.07 | 18.08 (0.02) | ||||||
| i magnitude | 17.41 (0.006) | 17.38 | 17.38 (0.006) | 17.38 (0.01) | 17.37 | 17.38 (0.01) | ||||||
| z magnitude | 16.84 (0.01) | 16.82 | 16.87 (0.01) | 16.82 (0.02) | 16.82 | 16.83 (0.02) | ||||||
| G magnitude | 17.82 | 18.03 (0.02) | ||||||||||
| BP magnitude | 18.16 | |||||||||||
| RP magnitude | 16.94 | |||||||||||
| Pan g magnitude | 18.18 (0.005) | |||||||||||
| Pan r magnitude | 18.08 (0.006) | |||||||||||
| Pan i magnitude | 17.39 (0.003) | |||||||||||
| Pan z magnitude | 16.91 (0.006) | |||||||||||
| Pan y magnitude | 16.65 (0.002) | |||||||||||
| E(B-V) | 0.030 | |||||||||||
* 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.