All names: 2MASS J12500777+5447070, Gaia DR2 1570514066627694336, LSPM J1250+5447, LHS 342, Gaia EDR3 1570514066627694336, 12501+5447, CNS5 3173, GJ 3754, Gaia DR3 1570514066627694336, J1250+5446, LP 131-66, NLTT 32057, WDJ125007.73+544706.17, PM J12501+5447, USNO-B1.0 1447-00219539, WD 1247+550, EGGR 536, PSO J192.5305+54.7807, PLX 2951.01, TIC 150362490
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Bergeron et al. 2001 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 50 07.22 (0.05) | 12 50 07.24 (0.07) | 12 50 07.24 (0.07) | 12 50 07.22 | 12 50 07.73 (0.05) | 12 50 07.24 | 12 50 09.55 | |||||||||
| Declination | 54 46 46.12 (0.05) | 54 46 46.75 (0.07) | 54 46 46.75 (0.07) | 54 46 46.12 | 54 47 06.17 (0.05) | 54 46 46.75 | 54 48 10.80 | |||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC: | DC | DC9 | |||||||
| Effective temperature | [K] | 3780.0 (82) | 4019.0 (17) | 3691.0 (92) | 3835.0 (35) | 4530.0 (608) | 4050.0 (70) | 4000.0 (70) | 3832.0 (44) | |||||||
| log(g) | [cgs] | 7.54 (0.06) | 7.68 (0.009) | 7.48 (0.07) | 7.54 (0.03) | 7.96 (0.03) | 7.57 (0.03) | 7.52 (0.04) | 7.55 (0.02) | |||||||
| Mass | [M☉] | 0.359 (0.03) | 0.398 (0.007) | 0.334 (0.01) | 0.56 (0.02) | 0.35 (0.01) | 0.33 (0.01) | 0.339 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -4.20 | -4.20 (0.01) | -4.20 (0.02) | ||||||||||||
| Cooling age | [Gyr] | 6.1400 | 4.8560 (0.3) | 4.6300 (0.3) | 4.1200 (0.3) | |||||||||||
| 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] | 42.20 (0.07) | 42.20 (0.07) | 42.05 (0.1) | 42.05 (0.1) | 42.05 (0.1) | 42.05 (0.1) | 39.50 (0.7) | 39.60 (0.7) | 39.50 (0.7) | 42.20 | 42.20 (0.07) | 42.05 (0.1) | 39.00 (1) | ||
| Distance | [pc] | 23.70 (0.04) | 23.70 (0.04) | 23.78 (0.06) | 23.78 (0.06) | 23.78 (0.06) | 23.78 (0.06) | 25.30 (3) | 25.25 (0.4) | 25.32 (0.4) | 23.70 | 23.70 (0.04) | 23.78 (0.06) | 25.64 (0.7) | ||
| Composition | H | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -277.9462299 (0.06) | -278.0521658 (0.1) | -277.946 (0.06) | -278.0521658 | |||||||||||
| Proper motion (declination) | [mas/yr] | -1253.27688 (0.07) | -1253.298875 (0.1) | -1253.277 (0.07) | -1253.298875 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 19.23 | 19.23 | 19.40 | |||||||||||||
| V magnitude | 17.79 | 17.79 | ||||||||||||||
| R magnitude | 17.03 | 17.03 | 17.10 | |||||||||||||
| I magnitude | 16.34 | 16.34 | ||||||||||||||
| J magnitude | 15.72 (0.03) | 15.79 (0.07) | 15.72 | 15.72 | 15.79 (0.07) | |||||||||||
| H magnitude | 15.67 (0.03) | 15.66 (0.1) | 15.67 | 15.67 | 15.66 (0.1) | |||||||||||
| K magnitude | 15.63 (0.03) | 15.40 (0.2) | 15.63 | 15.63 | 15.40 (0.2) | |||||||||||
| u magnitude | 21.09 (0.03) | 21.09 (0.1) | ||||||||||||||
| g magnitude | 18.34 (0.009) | 18.54 (0.008) | ||||||||||||||
| r magnitude | 17.30 (0.003) | 17.34 (0.006) | ||||||||||||||
| i magnitude | 16.84 (0.006) | 16.85 (0.005) | ||||||||||||||
| z magnitude | 16.68 (0.004) | 16.64 (0.01) | ||||||||||||||
| G magnitude | 17.33 (0.01) | 17.35 | 17.35 | 17.33 | 17.33 (0.003) | 17.35 | ||||||||||
| BP magnitude | 18.09 (0.01) | 18.10 | 18.10 | |||||||||||||
| RP magnitude | 16.50 (0.005) | 16.51 | 16.51 | |||||||||||||
| Pan g magnitude | 18.33 (0.02) | 18.33 (0.02) | 18.34 (0.009) | |||||||||||||
| Pan r magnitude | 17.31 (0.001) | 17.31 (0.001) | 17.30 (0.003) | |||||||||||||
| Pan i magnitude | 16.86 (0.002) | 16.86 (0.002) | 16.84 (0.006) | |||||||||||||
| Pan z magnitude | 16.70 (0.005) | 16.70 (0.005) | 16.68 (0.004) | |||||||||||||
| Pan y magnitude | 16.60 (0.01) | 16.60 (0.01) | 16.62 (0.02) | |||||||||||||
| 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.