Gaia DR2 2832497985019340416

All names: SDSS J230118.39+202906.7, SDSS J230118.40+202906.7, LSPM J2301+2029, Gaia DR2 2832497985019340416, Gaia EDR3 2832497985019340416, USNO-B1.0 1104-00605132, WDJ230118.32+202908.13, WDJ230118.32+202908.12, Gaia DR3 2832497985019340416

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 23 01 18.45 (0.08) 23 01 18.45 23 01 18.45 23 01 18.32 (0.08) 23 01 18.45
Declination 20 29 05.82 (0.09) 20 29 05.89 20 29 05.82 20 29 08.13 (0.09) 20 29 05.89
Spectral type DQ: DQ: DQ
Effective temperature [K] 8167.0 (56) 9018.0 8789.0 8111.0 (113)
log(g) [cgs] 7.93 (0.02) 8.27 8.18 7.92 (0.03)
Mass [M] 0.536 (0.01) 0.764 0.692 0.527 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.1590 1.1410
log(H/He)
log(C/He) -5.29
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] 10.11 (0.1) 10.17 (0.1) 10.11 10.11 (0.1) 10.17 (0.1)
Distance [pc] 98.90 (1) 98.36 (1) 98.90 98.90 (1) 98.36 (1)
Composition He
Proper motion (right ascension) [mas/yr] 116.6312161 (0.1) 116.2854944 (0.2) 116.631 (0.1) 116.2854944
Proper motion (declination) [mas/yr] -144.2326978 (0.1) -144.1462106 (0.2) -144.233 (0.1) -144.1462106
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.00
V magnitude
R magnitude 17.80
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.18 (0.01) 18.18 (0.01)
g magnitude 17.93 (0.006) 17.93 (0.006)
r magnitude 17.96 (0.007) 17.96 (0.007)
i magnitude 18.04 (0.009) 18.04 (0.009)
z magnitude 18.14 (0.02) 18.14 (0.02)
G magnitude 17.88 (0.01) 17.91 17.88 17.88 (0.003) 17.91
BP magnitude 17.98 (0.01) 17.98 17.98
RP magnitude 17.70 (0.01) 17.75 17.75
Pan g magnitude 17.94 (0.004)
Pan r magnitude 17.95 (0.005)
Pan i magnitude 18.06 (0.005)
Pan z magnitude 18.18 (0.009)
Pan y magnitude 18.25 (0.01)
E(B-V) 0.010

* 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.