All names: Gaia DR2 824609462856793472, 2MASS J09374115+4708367, SDSS J093741.10+470835.6, Gaia EDR3 824609462856793472, SDSS J093741.10+470835.66, Gaia DR3 824609462856793472, SDSS J093741.12+470836.2, TIC 105486664
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 37 41.09 (0.08) | 09 37 41.12 | 09 37 41.09 (0.09) | 09 37 41.12 (0.08) | ||||
| Declination | 47 08 35.50 (0.07) | 47 08 36.28 | 47 08 35.52 (0.09) | 47 08 36.36 (0.07) | ||||
| Spectral type | Carbon | dC | ||||||
| Effective temperature | [K] | |||||||
| log(g) | [cgs] | |||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.75 (0.1) | 0.64 (0.1) | 0.75 (0.1) | ||||
| Distance | [pc] | 1331.16 (192) | 1555.66 (333) | 1331.20 (192) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -23.98505896 (0.1) | -24.17192705 (0.2) | -23.985 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -54.10765002 (0.08) | -54.31640039 (0.2) | -54.108 (0.09) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 18.74 | |||||||
| V magnitude | 18.14 | |||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.44 (0.1) | |||||||
| H magnitude | 16.24 (0.2) | |||||||
| K magnitude | ||||||||
| u magnitude | 20.64 (0.07) | 20.61 (0.07) | 20.61 (0.07) | |||||
| g magnitude | 18.61 (0.008) | 18.61 (0.01) | 18.61 (0.008) | |||||
| r magnitude | 17.71 (0.006) | 17.69 (0.04) | 17.71 (0.006) | |||||
| i magnitude | 17.46 (0.006) | 17.45 (0.01) | 17.46 (0.006) | |||||
| z magnitude | 17.30 (0.01) | 17.28 (0.03) | 17.30 (0.01) | |||||
| G magnitude | 17.80 (0.01) | 17.82 | 17.80 (0.003) | |||||
| BP magnitude | 18.35 (0.01) | 18.40 | ||||||
| RP magnitude | 17.13 (0.007) | 17.14 | ||||||
| Pan g magnitude | 18.49 (0.004) | |||||||
| Pan r magnitude | 17.73 (0.004) | |||||||
| Pan i magnitude | 17.49 (0.006) | |||||||
| Pan z magnitude | 17.40 (0.005) | |||||||
| Pan y magnitude | 17.34 (0.02) | |||||||
| E(B-V) | 0.020 | |||||||
* 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.