All names: LAMOST J120927.94-030206.2, Gaia DR3 3598325632110462080, Gaia EDR3 3598325632110462080, GALEX J120927.9-030206, Gaia DR2 3598325632110462080, SDSS J120927.95-030206.3, PG 1206-028, WD 1206-027, SDSS J120927.95-030206.2, SDSS J120927.94-030206.2, SDSS J120927.93-030206.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 09 27.94 (0.09) | 12 09 27.94 | 12 09 27.94 (0.1) | 12 09 27.94 (0.09) | 12 09 27.94 | 12 09 27.89 | 12 09 27.95 | ||||||
| Declination | -03 02 06.38 (0.07) | -03 02 06.24 | -03 02 06.37 (0.1) | -03 02 06.31 (0.07) | -03 02 06.25 | -03 02 05.64 | -03 02 06.29 | ||||||
| Spectral type | DAO | DAO | DAO | DAO | DAO | DAO | DA | ||||||
| Effective temperature | [K] | 73225.0 (4132) | 79530.0 (4870) | 81159.0 (3137) | 71693.0 (2346) | ||||||||
| log(g) | [cgs] | 7.10 (0.1) | 7.13 (0.2) | 6.87 (0.1) | 7.02 (0.1) | ||||||||
| Mass | [M☉] | 0.45 (0.03) | 0.5 (0.04) | 0.479 (0.02) | |||||||||
| log(Luminosity) | [L☉] | 1.40 (0.2) | |||||||||||
| Cooling age | [Gyr] | 0.0001 | 0.0085 | ||||||||||
| 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] | 0.90 (0.1) | 0.91 (0.1) | 0.90 (0.1) | |||||||||
| Distance | [pc] | 1115.03 (135) | 1096.25 (164) | 1115.08 (135) | |||||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -5.549573695 (0.1) | -5.871 (0.3) | -5.55 (0.1) | -1.3 | ||||||||
| Proper motion (declination) | [mas/yr] | -4.03168714 (0.09) | -3.861 (0.2) | -4.032 (0.09) | -8.4 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.24 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 16.31 (0.005) | 16.31 (0.005) | 16.36 (0.02) | 16.36 | 16.34 (0.02) | ||||||||
| g magnitude | 16.76 (0.004) | 16.76 (0.004) | 16.79 (0.02) | 16.79 | 16.79 (0.02) | ||||||||
| r magnitude | 17.34 (0.005) | 17.34 (0.005) | 17.38 (0.02) | 17.37 | 17.36 (0.02) | ||||||||
| i magnitude | 17.71 (0.007) | 17.71 (0.007) | 17.73 (0.02) | 17.73 | 17.72 (0.02) | ||||||||
| z magnitude | 18.06 (0.02) | 18.06 (0.02) | 18.08 (0.03) | 18.08 | 18.08 (0.03) | ||||||||
| G magnitude | 17.07 (0.006) | 17.09 | 17.07 (0.003) | ||||||||||
| BP magnitude | 16.90 (0.006) | 16.80 | |||||||||||
| RP magnitude | 17.45 (0.01) | 17.42 | |||||||||||
| Pan g magnitude | 16.88 (0.004) | ||||||||||||
| Pan r magnitude | 17.35 (0.003) | ||||||||||||
| Pan i magnitude | 17.75 (0.004) | ||||||||||||
| Pan z magnitude | 18.05 (0.01) | ||||||||||||
| Pan y magnitude | 18.27 (0.01) | ||||||||||||
| E(B-V) | 0.026 | ||||||||||||
* 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.