All names: Gaia DR3 2664947084554131328, SDSS J232000.77+074644.1, Gaia EDR3 2664947084554131328, SDSSJ232000.77+074644.11, Gaia DR2 2664947084554131328, GALEX J232000.7+074644, SDSS J232000.77+074644.11
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 23 20 00.76 (0.5) | 23 20 00.77 | 23 20 00.77 | 23 20 00.76 (0.7) | 23 20 00.76 (0.5) | ||||||
Declination | 07 46 44.10 (0.4) | 07 46 44.09 | 07 46 44.11 | 07 46 44.10 (0.6) | 07 46 44.14 (0.4) | ||||||
Spectral type | sdO | sdO | sdO | sdO | sdO | ||||||
Effective temperature | [K] | 65281.0 (6008) | 19422.0 | 23466.0 | 65281.0 (6008) | ||||||
log(g) | [cgs] | 5.64 (0.2) | 6.52 | 6.62 | 5.64 (0.2) | ||||||
Mass | [M☉] | 0.192 | 0.182 | 0.186 (0.1) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | ||||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
Parallax | [mas] | -0.56 (0.5) | 0.52 (1) | 0.52 (1) | 0.52 (1) | ||||||
Distance | [pc] | 1926.41 (3649) | 1926.43 (3649) | 1926.41 (3649) | |||||||
Composition | |||||||||||
Proper motion (right ascension) | [mas/yr] | -0.398197462 (0.5) | -2.415 (1) | -2.414521379 (1) | -0.398 (0.5) | ||||||
Proper motion (declination) | [mas/yr] | -2.804846611 (0.5) | -4.5 (1) | -4.500102225 (1) | -2.805 (0.5) | ||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 19.29 (0.02) | 19.29 (0.02) | 19.30 (0.03) | 19.30 (0.03) | |||||||
g magnitude | 19.63 (0.01) | 19.64 (0.01) | 19.65 (0.02) | 19.65 (0.02) | |||||||
r magnitude | 20.07 (0.02) | 20.08 (0.02) | 20.07 (0.02) | 20.07 (0.02) | |||||||
i magnitude | 20.33 (0.03) | 20.32 (0.03) | 20.32 (0.03) | 20.32 (0.03) | |||||||
z magnitude | 20.51 (0.1) | 20.50 (0.1) | 20.52 (0.1) | 20.52 (0.1) | |||||||
G magnitude | 19.83 (0.05) | 19.90 (0.007) | 19.90 | 19.83 (0.006) | |||||||
BP magnitude | 19.60 (0.05) | 19.68 (0.06) | 19.68 | ||||||||
RP magnitude | 20.14 (0.08) | 20.08 (0.09) | 20.08 | ||||||||
Pan g magnitude | 19.68 (0.01) | 19.68 (0.01) | |||||||||
Pan r magnitude | 20.08 (0.01) | 20.08 (0.01) | |||||||||
Pan i magnitude | 20.38 (0.02) | 20.38 (0.02) | |||||||||
Pan z magnitude | 20.63 (0.06) | 20.63 (0.06) | |||||||||
Pan y magnitude | 20.69 (0.2) | 20.69 (0.2) | |||||||||
E(B-V) | 0.048 |
* 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.