All names: CBS 9, TIC 330705492, [HHD2009] SDSS J0927+2846, Gaia EDR3 695448324410409728, Gaia DR3 695448324410409728, 2MASS J09271203+2846293, WIRED J092712.02+284629.2, SDSS J092712.03+284629.3, Gaia DR2 695448324410409728, SDSS J092712.00+284629.3, SDSS J092712.02+284629.2, GALEX J092712.0+284629, WD 0924+289, USNO-B1.0 1187-00172757, LAMOST J092712.02+284629.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 27 12.01 (0.08) | 09 27 12.03 | 09 27 12.01 (0.1) | 09 27 12.02 | 09 27 12.01 | 09 27 12.03 (0.09) | 09 27 13.70 | 09 27 12.03 | |||||||
| Declination | 28 46 29.23 (0.06) | 28 46 29.27 | 28 46 29.24 (0.1) | 28 46 29.21 | 28 46 29.23 | 28 46 29.29 (0.06) | 28 46 08.40 | 28 46 29.28 | |||||||
| Spectral type | DA+M | DA+M | DA+M | DA | DA | DA+dMe | DA | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 10982.0 | 21785.0 (258) | 23040.0 (407) | 16166.0 (413) | 21847.0 (152) | |||||||||
| log(g) | [cgs] | 6.88 | 7.72 (0.04) | 7.91 (0.05) | 7.31 (0.03) | 7.65 (0.03) | |||||||||
| Mass | [M☉] | 0.203 | 0.49 (0.02) | 0.58 (0.03) | 0.319 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | ||||||||||||||
| 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] | 4.25 (0.1) | 4.20 (0.1) | 4.25 | 4.25 (0.1) | ||||||||||
| Distance | [pc] | 235.37 (5) | 238.02 (8) | 848.00 (148) | 210.00 | 235.37 | 235.37 (5) | ||||||||
| Composition | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.64738776 (0.1) | -14.69202469 (0.2) | -14.647 (0.1) | |||||||||||
| Proper motion (declination) | [mas/yr] | -3.716945081 (0.08) | -3.748489443 (0.2) | -3.717 (0.08) | |||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||||||
| B magnitude | 16.30 | ||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | 17.40 | ||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 15.89 (0.07) | ||||||||||||||
| H magnitude | 15.32 (0.1) | ||||||||||||||
| K magnitude | 15.23 (0.1) | ||||||||||||||
| u magnitude | 16.98 (0.008) | 17.00 | 16.98 (0.008) | 16.99 | 16.99 (0.01) | ||||||||||
| g magnitude | 16.99 (0.005) | 17.00 | 16.99 (0.005) | 17.00 | 17.00 (0.02) | ||||||||||
| r magnitude | 17.34 (0.005) | 17.38 | 17.34 (0.005) | 17.37 | 17.37 (0.02) | ||||||||||
| i magnitude | 17.43 (0.006) | 17.44 | 17.43 (0.006) | 17.43 | 17.44 (0.02) | ||||||||||
| z magnitude | 17.23 (0.01) | 17.24 | 17.23 (0.01) | 17.23 | 17.24 (0.02) | ||||||||||
| G magnitude | 17.12 (0.009) | 17.13 | 17.12 | 17.12 (0.003) | |||||||||||
| BP magnitude | 17.11 (0.009) | 17.05 | |||||||||||||
| RP magnitude | 17.05 (0.01) | 17.04 | |||||||||||||
| Pan g magnitude | 17.05 (0.009) | ||||||||||||||
| Pan r magnitude | 17.35 (0.006) | ||||||||||||||
| Pan i magnitude | 17.44 (0.005) | ||||||||||||||
| Pan z magnitude | 17.28 (0.005) | ||||||||||||||
| Pan y magnitude | 17.11 (0.008) | ||||||||||||||
| E(B-V) | 0.014 | ||||||||||||||
* 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.