All names: AAVSO 0645-44, CPC 0 3901, Gaia DR3 5562023884304074240, GEN# +1.00049798, ALS 15821, UCAC2 12836082, 2MASS J06480469-4418584, WEB 6574, TYC 7639-1289-1, SBC9 422, HD49798, SAO 218207, TIC 170203297, RX J0648.0-4418, UBV M 12478, HIP 32602, INTREF 313, 1WGA J0648.0-4419, HD 49798, SBC7 290, GSC 07639-01289, 1WGA J0648.0-4418, Renson 13500, UBV 6765, CPD-44 1096, CEL 1390, 3XMM J064804.6-441858, RX J0648.0-4419, RX J0648.1-4419, GCRV 58075, Gaia DR2 5562023884304074240, TD1 8248, PPM 311129, uvby98 100049798, 2XMM J064804.6-441858, HIC 32602, 1RXS J064804.4-441905, CD-44 2920, Glazar Vel 8
| 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.