SDSS J003004.94+271425.5

All names: SDSS J003004.94+271425.57, WDJ003004.89+271426.87, Gaia DR3 2856067008897130112, SDSS J003004.94+271425.5, SDSS J003004.94+271425.6, J0030+2714, SDSS J003004.93+271425.5, Gaia DR2 2856067008897130112, Gaia EDR3 2856067008897130112

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 00 30 04.97 (0.1) 00 30 04.94 00 30 04.96 (0.2) 00 30 04.97 00 30 04.89 (0.1) 00 30 04.96
Declination 27 14 24.75 (0.08) 27 14 25.57 27 14 24.82 (0.1) 27 14 24.75 27 14 26.87 (0.08) 27 14 24.82
Spectral type DC DC DC DC DC DC DC DC
Effective temperature [K] 5830.0 (48) 5838.0 (47) 6129.0 5875.0 6341.0 (63)
log(g) [cgs] 8.11 (0.02) 8.10 (0.02) 8.25 8.11 8.00 (0)
Mass [M] 0.639 (0.02) 0.633 (0.02) 0.749 0.641
log(Luminosity) [L]
Cooling age [Gyr] 3.8500 3.8090 3.7190
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 14.69 (0.2) 14.55 (0.2) 14.55 (0.2) 14.69 14.69 (0.2) 14.55 (0.2)
Distance [pc] 68.10 (0.8) 68.73 (0.9) 68.71 (0.9) 68.10 68.10 (0.8) 68.71 (0.9)
Composition He He
Proper motion (right ascension) [mas/yr] 64.22566205 (0.2) 64.08564799 (0.4) 64.226 (0.2) 64.08564799
Proper motion (declination) [mas/yr] -132.6109957 (0.1) -132.632926 (0.2) -132.611 (0.1) -132.632926
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.66 (0.04)
H magnitude
K magnitude
u magnitude 19.72 (0.05) 19.72 (0.05) 19.71 (0.05) 19.72 (0.05) 19.72 (0.05)
g magnitude 18.85 (0.009) 18.87 (0.02) 18.85 (0.009) 18.85 (0.009)
r magnitude 18.46 (0.01) 18.48 (0.02) 18.47 (0.01) 18.47 (0.01)
i magnitude 18.36 (0.01) 18.38 (0.02) 18.37 (0.01) 18.37 (0.01)
z magnitude 18.36 (0.04) 18.37 (0.05) 18.36 (0.04) 18.36 (0.04)
G magnitude 18.48 (0.02) 18.51 18.48 18.48 (0.003) 18.51
BP magnitude 18.78 (0.02) 18.79 18.79
RP magnitude 18.04 (0.02) 18.01 18.01
Pan g magnitude 18.79 (0.009) 18.79 (0.01)
Pan r magnitude 18.47 (0.005) 18.47 (0.006)
Pan i magnitude 18.37 (0.004) 18.37 (0.003)
Pan z magnitude 18.37 (0.01) 18.37 (0.009)
Pan y magnitude 18.39 (0.02) 18.39 (0.02)
E(B-V) 0.004

* Constant surface field

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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.