All names: FBS 0249-013, US 3250, WD 0249-012, [HH86] 0249-012, KUV 02495-0118, HBQS 0249-0117, WIRED J025202.46-010515.7, PB 6908, SDSS J025202.46-010515.7, [RGR2007] J025202.46-010515.7, Gaia DR2 2497494654805378816
| Parameter | Unit | Gaia DR2 | Tremblay et al. 2011 | SDSS DR12 | Simbad | Eisenstein et al. 2006 | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|
| Right ascension | 02 52 02.46 (0.1) | 02 52 02.46 | 02 52 02.46 | 02 52 02.46 | 02 52 02.46 | ||
| Declination | -01 05 15.86 (0.1) | -01 05 15.75 | -01 05 15.74 | -01 05 15.73 | -01 05 15.74 | ||
| Spectral type | DA | DA:+M | DA:+M | DA+M | |||
| Effective temperature | [K] | 68130.0 (1760) | 88889.0 (2195) | 80511.0 (1672) | |||
| log(g) | [cgs] | 7.47 (0.09) | 7.07 (0.07) | 7.17 (0.06) | |||
| Mass | [M☉] | 0.54 (0.02) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | 0.0006 | |||||
| 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] | 2.07 (0.1) | |||||
| Distance | [pc] | 482.22 (34) | |||||
| Composition | H | ||||||
| Proper motion (right ascension) | [mas/yr] | -1.8605927905 (0.2) | -17.0 | -12.5 | |||
| Proper motion (declination) | [mas/yr] | -6.2345115023 (0.2) | -5.0 | -0.8 | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | WDMS | WDMS | |||||
| B magnitude | 16.72 | ||||||
| V magnitude | 16.00 | ||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 14.68 | ||||||
| H magnitude | 14.06 | ||||||
| K magnitude | 13.84 | ||||||
| u magnitude | 16.43 (0.006) | 16.49 | 16.50 (0.02) | 16.49 (0.02) | |||
| g magnitude | 16.85 (0.005) | 16.85 | 16.85 (0.03) | 16.85 (0.03) | |||
| r magnitude | 17.28 (0.006) | 17.34 | 17.35 (0.05) | 17.34 (0.05) | |||
| i magnitude | 17.75 (0.008) | 17.80 | 17.78 (0.2) | 17.76 (0.2) | |||
| z magnitude | 17.99 (0.02) | 18.00 | 18.01 (0.3) | 17.99 (0.3) | |||
| G magnitude | 17.14 | ||||||
| BP magnitude | |||||||
| RP magnitude | |||||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.