All names: SDSS J124937.50+651407.6, SDSS J124937.52+651407.5, SDSS J124937.50+651407.67, Gaia DR2 1677469197657784704, Gaia DR3 1677469197657784704, Gaia EDR3 1677469197657784704, SDSS J124937.51+651407.4
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Hollands et al. 2017 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 49 37.43 (0.4) | 12 49 37.52 | 12 49 37.43 (0.5) | 12 49 37.53 (0.4) | |||||
| Declination | 65 14 07.61 (0.4) | 65 14 07.43 | 65 14 07.61 (0.5) | 65 14 07.51 (0.4) | |||||
| Spectral type | DZ | DZ | DZ | DZ | |||||
| Effective temperature | [K] | 7540.0 (170) | 8914.0 (93) | ||||||
| log(g) | [cgs] | 8.00 (0) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 1.6000 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | -8.5 | -7.779 | |||||||
| log(Ca/H) | |||||||||
| log(N/He) | |||||||||
| log(O/He) | |||||||||
| log(Na/He) | |||||||||
| log(Mg/He) | -6.89 | ||||||||
| 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) | -7.49 | ||||||||
| log(Co/He) | |||||||||
| log(Ni/He) | |||||||||
| log(Cu/He) | |||||||||
| log(Zn/He) | |||||||||
| log(Ga/He) | |||||||||
| log(Ge/He) | |||||||||
| log(Sr/He) | |||||||||
| Parallax | [mas] | 3.70 (0.5) | 2.79 (0.6) | 3.70 (0.5) | |||||
| Distance | [pc] | 270.40 (34) | 358.21 (79) | 275.00 (37) | 270.39 (34) | ||||
| Composition | He | He | |||||||
| Proper motion (right ascension) | [mas/yr] | -38.56598846 (0.5) | -40.18503035 (1) | -38.566 (0.5) | |||||
| Proper motion (declination) | [mas/yr] | 6.248054824 (0.6) | 5.370881154 (1) | 6.248 (0.6) | |||||
| Variability | |||||||||
| Magnetic | yes | ||||||||
| Bd | [MG] | 2.15 (0.05) | |||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 21.18 (0.1) | 21.16 (0.1) | 21.16 (0.1) | 21.18 (0.1) | |||||
| g magnitude | 20.47 (0.02) | 20.44 (0.03) | 20.44 (0.03) | 20.47 (0.02) | |||||
| r magnitude | 20.39 (0.03) | 20.39 (0.04) | 20.39 (0.04) | 20.39 (0.03) | |||||
| i magnitude | 20.47 (0.04) | 20.46 (0.04) | 20.46 (0.04) | 20.47 (0.04) | |||||
| z magnitude | 21.03 (0.3) | 21.02 (0.3) | 21.02 (0.3) | 21.04 (0.3) | |||||
| G magnitude | 20.36 (0.06) | 20.43 | 20.36 (0.006) | ||||||
| BP magnitude | 20.27 (0.06) | 20.45 | |||||||
| RP magnitude | 20.03 (0.08) | 19.99 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| 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.