All names: Gaia DR3 3495325684921885184, TIC 9335707, 2MASS J12444157-2748581, Gaia EDR3 3495326092943727232, GALEX J124441.6-274857, EC 12420-2732, GALEXJ12446-2748, Gaia DR2 3495325684921885184
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 44 48.71 (0.7) | 12 44 41.67 | 12 44 41.58 (0.05) | ||
| Declination | -27 48 17.16 (0.3) | -27 48 57.51 | -27 48 58.23 (0.02) | ||
| Spectral type | He-sdO | sdOC4VIIHe40 | |||
| 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] | 1.64 (0.7) | 0.56 (0.06) | 0.48 (0.05) | |
| Distance | [pc] | 608.12 (251) | 1782.85 (206) | 2068.68 (196) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 2.24 (1) | -7.405 (0.1) | -7.225 (0.08) | |
| Proper motion (declination) | [mas/yr] | -15.488 (0.6) | 2.119 (0.09) | 2.066 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.45 | ||||
| V magnitude | 14.70 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.33 (0.05) | 15.33 (0.05) | |||
| H magnitude | 15.53 (0.1) | 15.53 (0.1) | |||
| K magnitude | 15.99 (0.3) | 15.99 (0.3) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.21 (0.006) | 14.65 (0.0006) | 14.64 (0.003) | ||
| BP magnitude | 20.56 (0.1) | 14.45 (0.007) | |||
| RP magnitude | 19.51 (0.07) | 14.92 (0.002) | |||
| Pan g magnitude | 14.51 (0.005) | ||||
| Pan r magnitude | 14.90 (0.005) | ||||
| Pan i magnitude | 15.26 (0.004) | ||||
| Pan z magnitude | 15.52 (0.003) | ||||
| Pan y magnitude | 15.71 (0.002) | ||||
| E(B-V) | 0.050 | ||||
* 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.