All names: Gaia DR1 4900109736826918016, TIC 369965957, Gaia DR3 4900109741122939648, CPD-65 14, PPM 775102, GSC 08843-00281, EC00179-6503, 2MASS J00204109-6447380, RAVE J002041.1-644738, TYC 8843-281-1, Gaia DR2 4900109741122939648
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 20 41.09 | 00 20 41.08 (0.009) | ||
| Declination | -64 47 38.37 | -64 47 37.92 (0.009) | ||
| Spectral type | sdO | sdO | ||
| 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 (0.02) | 1.63 (0.01) | |
| Distance | [pc] | 611.36 (9) | 612.33 (4) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.044 (0.04) | -2.927 (0.01) | |
| Proper motion (declination) | [mas/yr] | 8.436 (0.04) | 8.444 (0.01) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.43 (0.07) | |||
| V magnitude | 10.31 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 8.48 (0.03) | 8.48 (0.03) | ||
| H magnitude | 7.92 (0.04) | 7.92 (0.04) | ||
| K magnitude | 7.80 (0.05) | 7.80 (0.05) | ||
| u magnitude | ||||
| g magnitude | 11.11 (0.01) | |||
| r magnitude | 10.11 (0.05) | |||
| i magnitude | 9.68 (0.03) | |||
| z magnitude | ||||
| G magnitude | 10.03 (0.0003) | 10.04 (0.003) | ||
| BP magnitude | 10.58 (0.001) | |||
| RP magnitude | 9.37 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.012 | |||
* 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.