All names: Gaia EDR3 1515081328918440064, J1249+3407, LSPM J1249+3407, GALEX J124911.7+340706, SDSS J124911.75+340705.9, NLTT 31999, USNO-B1.0 1241-00203321, [VV2010] J124911.9+340705, CBS 357, WIRED J124911.87+340705.5, Gaia DR3 1515081328918440064, [B68b] 47, SDSS J124911.88+340705.5, Gaia DR2 1515081328918440064, LP 267-248, WDJ124911.97+340705.09, AB 13, SDSS J124911.87+340705.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Coutu et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 49 11.64 (0.06) | 12 49 11.88 | 12 49 11.88 | 12 49 11.65 (0.08) | 12 49 11.64 | 12 49 11.97 (0.06) | 12 49 11.65 | 12 49 11.88 | |||||||
| Declination | 34 07 06.31 (0.06) | 34 07 05.51 | 34 07 05.51 | 34 07 06.27 (0.06) | 34 07 06.31 | 34 07 05.09 (0.06) | 34 07 06.27 | 34 07 05.50 | |||||||
| Spectral type | DQ | DQ | DQ | DQ | DQ | DQ | |||||||||
| Effective temperature | [K] | 8402.0 (45) | 8441.0 (201) | 9414.0 | 9224.0 | 8281.0 (90) | 10096.0 (28) | ||||||||
| log(g) | [cgs] | 7.93 (0.01) | 7.93 | 8.28 | 8.21 | 7.92 (0.02) | 9.43 (0.5) | ||||||||
| Mass | [M☉] | 0.538 (0.009) | 0.5362 | 0.776 | 0.707 | 0.529 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.9400 | 0.8840 | 1.0690 | 1.0410 | ||||||||||
| log(H/He) | |||||||||||||||
| log(C/He) | -5.21 | -5.1611 (0.04) | |||||||||||||
| log(Ca/He) | |||||||||||||||
| log(Ca/H) | |||||||||||||||
| log(N/He) | |||||||||||||||
| log(O/He) | |||||||||||||||
| log(Na/He) | |||||||||||||||
| log(Mg/He) | |||||||||||||||
| log(Al/He) | |||||||||||||||
| log(Si/He) | |||||||||||||||
| log(P/He) | |||||||||||||||
| log(S/He) | |||||||||||||||
| log(Cl/He) | |||||||||||||||
| log(Sc/He) | |||||||||||||||
| log(Ti/He) | |||||||||||||||
| log(V/He) | |||||||||||||||
| log(Cr/He) | |||||||||||||||
| log(Mn/He) | |||||||||||||||
| log(Fe/He) | |||||||||||||||
| log(Co/He) | |||||||||||||||
| log(Ni/He) | |||||||||||||||
| log(Cu/He) | |||||||||||||||
| log(Zn/He) | |||||||||||||||
| log(Ga/He) | |||||||||||||||
| log(Ge/He) | |||||||||||||||
| log(Sr/He) | |||||||||||||||
| Parallax | [mas] | 14.03 (0.08) | 13.95 (0.1) | 13.95 | 13.95 (0.1) | 14.03 | 14.03 (0.08) | 13.95 (0.1) | |||||||
| Distance | [pc] | 71.28 (0.4) | 71.68 (0.5) | 71.69 (0.5) | 71.69 (0.5) | 71.28 | 71.28 (0.4) | 71.69 (0.5) | |||||||
| Composition | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -256.3514092 (0.07) | -256.389538 (0.2) | -256.351 (0.07) | -256.389538 | ||||||||||
| Proper motion (declination) | [mas/yr] | 76.59823162 (0.1) | 76.62717152 (0.1) | 76.598 (0.1) | 76.62717152 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 17.51 | ||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | 16.90 | ||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 16.95 (0.03) | ||||||||||||||
| H magnitude | 16.85 (0.04) | ||||||||||||||
| K magnitude | 16.98 (0.07) | ||||||||||||||
| u magnitude | 17.35 (0.009) | 17.34 (0.009) | 17.35 (0.009) | 17.35 (0.009) | 17.34 (0.02) | ||||||||||
| g magnitude | 17.11 (0.005) | 17.11 (0.005) | 17.11 (0.005) | 17.11 (0.03) | |||||||||||
| r magnitude | 17.17 (0.005) | 17.17 (0.005) | 17.17 (0.005) | 17.15 (0.01) | |||||||||||
| i magnitude | 17.28 (0.006) | 17.28 (0.006) | 17.28 (0.006) | 17.28 (0.01) | |||||||||||
| z magnitude | 17.39 (0.01) | 17.39 (0.01) | 17.39 (0.01) | 17.38 (0.02) | |||||||||||
| G magnitude | 17.09 (0.007) | 17.11 | 17.09 | 17.09 (0.003) | 17.11 | ||||||||||
| BP magnitude | 17.16 (0.007) | 17.14 | 17.14 | ||||||||||||
| RP magnitude | 16.96 (0.009) | 16.96 | 16.96 | ||||||||||||
| Pan g magnitude | 17.11 (0.02) | 17.14 (0.008) | |||||||||||||
| Pan r magnitude | 17.15 (0.005) | 17.15 (0.006) | |||||||||||||
| Pan i magnitude | 17.28 (0.003) | 17.28 (0.002) | |||||||||||||
| Pan z magnitude | 17.40 (0.005) | 17.42 (0.007) | |||||||||||||
| Pan y magnitude | 17.51 (0.02) | 17.52 (0.01) | |||||||||||||
| E(B-V) | 0.003 | ||||||||||||||
* 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.