All names: SDSS J090437.33+225438.5, 2MASS J09043729+2254392, TIC 203286656, [HHD2009] SDSS J0904+2254, LAMOST J090437.32+225438.7, USNO-B1.0 1129-00200840, WIRED J090437.32+225438.7, WISEA J090437.31+225438.8, SDSS J090437.32+225438.7, Gaia DR2 685656898486706944, WISE J090437.31+225438.9, WD 0901+231, Gaia EDR3 685656898486706944, SDSS J090437.32+225438.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 04 37.34 (0.7) | 09 04 37.32 | 09 04 37.32 | 09 04 37.30 (231) | 09 04 37.51 | 09 04 37.32 | |||
| Declination | 22 54 38.29 (0.5) | 22 54 38.74 | 22 54 38.70 | 22 54 39.24 (201) | 22 54 31.68 | 22 54 38.78 | |||
| Spectral type | DA+M | DA+M | DA2.7 M | DA+M | |||||
| Effective temperature | [K] | 18756.0 (196) | 19392.0 (119) | ||||||
| log(g) | [cgs] | 7.83 (0.04) | 7.46 (0.03) | ||||||
| Mass | [M☉] | 0.53 (0.02) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | ||||||||
| Distance | [pc] | 620.00 (73) | |||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 18.0 (6) | |||||||
| Proper motion (declination) | [mas/yr] | -24.0 (5) | |||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | 16.90 | ||||||||
| V magnitude | |||||||||
| R magnitude | 17.50 | ||||||||
| I magnitude | |||||||||
| J magnitude | 14.98 (0.04) | ||||||||
| H magnitude | 14.49 (0.03) | ||||||||
| K magnitude | 14.12 (0.05) | ||||||||
| u magnitude | 17.46 (0.01) | 17.52 | 17.46 (0.01) | 17.51 | 17.49 (0.02) | ||||
| g magnitude | 17.27 (0.005) | 17.31 | 17.27 (0.005) | 17.30 | 17.30 (0.01) | ||||
| r magnitude | 17.42 (0.006) | 17.50 | 17.42 (0.006) | 17.49 | 17.50 (0.01) | ||||
| i magnitude | 16.92 (0.006) | 17.01 | 16.92 (0.006) | 17.00 | 17.02 (0.02) | ||||
| z magnitude | 16.32 (0.008) | 16.40 | 16.32 (0.008) | 16.39 | 16.41 (0.02) | ||||
| G magnitude | 17.51 (0.008) | 17.35 (0.01) | |||||||
| BP magnitude | 17.35 (0.008) | ||||||||
| RP magnitude | 16.47 (0.007) | ||||||||
| Pan g magnitude | 17.32 (0.006) | ||||||||
| Pan r magnitude | 17.47 (0.005) | ||||||||
| Pan i magnitude | 16.97 (0.005) | ||||||||
| Pan z magnitude | 16.50 (0.003) | ||||||||
| Pan y magnitude | 16.21 (0.006) | ||||||||
| E(B-V) | 0.033 | ||||||||
* 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.