All names: CPD-44 1096, Gaia DR2 5562023884304074240, HD49798, HD 49798, AAVSO 0645-44, Renson 13500, CPC 0 3901, WEB 6574, 2XMM J064804.6-441858, GSC 07639-01289, TIC 170203297, CD-44 2920, CEL 1390, SAO 218207, ALS 15821, 3XMM J064804.6-441858, PPM 311129, TYC 7639-1289-1, RX J0648.1-4419, Gaia DR3 5562023884304074240, TD1 8248, 1RXS J064804.4-441905, SBC9 422, RX J0648.0-4418, uvby98 100049798, INTREF 313, RX J0648.0-4419, UCAC2 12836082, UBV M 12478, HIC 32602, SBC7 290, UBV 6765, 1WGA J0648.0-4418, GEN# +1.00049798, 1WGA J0648.0-4419, 2MASS J06480469-4418584, Glazar Vel 8, GCRV 58075, HIP 32602
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 06 48 04.69 | 06 48 04.70 (0.04) | ||
| Declination | -44 18 58.49 | -44 18 58.44 (0.05) | ||
| Spectral type | sdO | sdO6 | ||
| Effective temperature | [K] | 46500.0 | ||
| log(g) | [cgs] | 4.35 | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.97 (0.06) | 1.92 (0.05) | |
| Distance | [pc] | 507.85 (16) | 520.94 (14) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.11 (0.1) | -4.162 (0.07) | |
| Proper motion (declination) | [mas/yr] | 5.669 (0.1) | 5.926 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 8.02 (0.002) | |||
| V magnitude | 8.29 (0.002) | |||
| R magnitude | 8.39 (0.001) | |||
| I magnitude | 8.54 (0.001) | |||
| J magnitude | 8.86 (0.03) | 8.86 (0.03) | ||
| H magnitude | 9.01 (0.03) | 9.01 (0.03) | ||
| K magnitude | 9.07 (0.02) | 9.07 (0.02) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 8.21 (0.0009) | 8.22 (0.003) | ||
| BP magnitude | 8.08 (0.003) | |||
| RP magnitude | 8.50 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| 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.