| Name: | AT2026sfn |
| Right ascension: | 21h28m47.60s |
| Declination: | 20d31m03.04s |
| Discovery Date: | July 7, 2026, 9:43 a.m. |
| Classification: | Impostor-SN |
| Redshift: | 0.017700 |
| MW E(B-V): | 0.079 |
| Name: | 21284834+2030392 |
| Object ID: | 1034688.0 |
| Catalog Name: | glade |
| Catalog Release: | latest |
| Right ascension: | 21h28m48.35s |
| Declination: | 20d30m39.20s |
| Redshift: | 0.017617 |
| Photometric Redshift: | None |
| Downloaded | Unavailable |
|---|---|
|
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 GALEX_NUV GALEX_FUV PanSTARRS_g PanSTARRS_r PanSTARRS_i PanSTARRS_z PanSTARRS_y |
SDSS_i SDSS_r SDSS_u SDSS_z SDSS_g DES_g DES_r DES_i DES_z DES_Y |
| Task Name | Status | Time (s) |
|---|---|---|
| Cutout download | processed | 4.97 |
| Transient MWEBV | processed | 0.13 |
| Host match | processed | 4.35 |
| Host information | processed | 0.13 |
| Host MWEBV | processed | 0.08 |
| Global aperture construction | processed | 1.36 |
| Global aperture photometry | processed | 4.06 |
| Validate global photometry | processed | 10.89 |
| Global host SED inference | processed | 1821.35 |
| Local aperture photometry | processed | 4.08 |
| Validate local photometry | processed | 0.02 |
| Local host SED inference | processed | 460.71 |
| RA, DEC (J2000): | 21h28m47.60s, 20d31m03.04s |
| semi major axis, semi minor axis (arcsec): | 5.59, 5.59 |
| angle (degrees, anti-clockwise from east): | 0.0 |
| Filter | Flux {\rm (\mu Jy)} | Flux error {\rm (\mu Jy)} | Mag | Mag error | Mag sys |
|---|---|---|---|---|---|
| GALEX_FUV | 6.56 | 2.42 | 21.858 | 0.401 | AB |
| GALEX_NUV | 8.79 | 1.73 | 21.540 | 0.214 | AB |
| PanSTARRS_g | 116.66 | 1.27 | 18.733 | 0.012 | AB |
| PanSTARRS_r | 192.48 | 1.57 | 18.189 | 0.009 | AB |
| PanSTARRS_i | 215.57 | 1.96 | 18.066 | 0.010 | AB |
| PanSTARRS_z | 245.26 | 4.16 | 17.926 | 0.018 | AB |
| PanSTARRS_y | 331.17 | 9.71 | 17.600 | 0.032 | AB |
| 2MASS_J | 185.17 | 133.52 | 17.336 | 0.783 | Vega |
| 2MASS_H | 635.4 | 208.47 | 15.525 | 0.356 | Vega |
| 2MASS_K | 172.36 | 220.2 | 16.471 | 1.387 | Vega |
| RA, DEC (J2000): | 21h28m48.35s, 20d30m38.99s |
| semi major axis, semi minor axis (arcsec): | 40.9, 12.43 |
| angle (degrees, anti-clockwise from east): | 352.15 |
| Filter | Flux {\rm (\mu Jy)} | Flux error {\rm (\mu Jy)} | Mag | Mag error | Mag sys |
|---|---|---|---|---|---|
| GALEX_FUV | 252.79 | 12.56 | 17.893 | 0.054 | AB |
| GALEX_NUV | 428.79 | 9.56 | 17.319 | 0.024 | AB |
| PanSTARRS_g | 17285.11 | 5.83 | 13.306 | 0.000 | AB |
| PanSTARRS_r | 30275.94 | 7.38 | 12.697 | 0.000 | AB |
| PanSTARRS_z | 42324.61 | 17.45 | 12.334 | 0.000 | AB |
| PanSTARRS_y | 45822.03 | 39.65 | 12.247 | 0.001 | AB |
| 2MASS_J | 48018.64 | 549.51 | 11.302 | 0.012 | Vega |
| 2MASS_H | 52380.97 | 853.26 | 10.734 | 0.018 | Vega |
| 2MASS_K | 38727.48 | 900.98 | 10.592 | 0.025 | Vega |
| WISE_W1 | 18378.94 | 403.34 | 10.540 | 0.024 | Vega |
| WISE_W2 | 11425.27 | 173.71 | 10.416 | 0.017 | Vega |
| WISE_W3 | 32471.65 | 775.87 | 7.447 | 0.026 | Vega |
| WISE_W4 | 51761.52 | 3898.88 | 5.495 | 0.082 | Vega |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(M_{\ast}/M_{\odot})\, | 8.185 | 8.447 | 8.653 |
| {\rm log}_{10}({\rm SFR}) | -1.601 | -1.162 | -0.809 |
| {\rm log}_{10}({\rm sSFR}) | -10.153 | -9.597 | -9.086 |
| {\rm stellar\ age} | 3.116 | 6.295 | 8.402 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(Z_{\ast}/Z_{\odot}) | -1.803 | -1.391 | -0.533 |
| {\rm log}_{10}(Z_{gas}/Z_{\odot})\, | -1.259 | -0.257 | -0.005 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| \tau_2 | 0.480 | 0.813 | 1.129 |
| \delta | -0.404 | -0.090 | 0.184 |
| \tau_1/\tau_2 | 0.697 | 1.029 | 1.365 |
| Q_{PAH} | 0.539 | 1.795 | 3.650 |
| U_{min} | 2.774 | 7.687 | 14.720 |
| {\rm log}_{10}(\gamma_e)\, | -3.447 | -2.211 | -1.197 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(f_{AGN})\, | -4.362 | -3.203 | -1.078 |
| {\rm log}_{10}(\tau_{AGN})\, | 0.941 | 1.474 | 1.962 |
| Lookback time | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| 0.00-0.03 Gyr | -1.353 | -1.078 | -0.779 |
| 0.03-0.10 Gyr | -2.102 | -1.244 | -0.780 |
| 0.10-0.33 Gyr | -2.411 | -1.371 | -0.895 |
| 0.33-1.10 Gyr | -2.611 | -1.546 | -1.106 |
| 1.10-3.66 Gyr | -2.683 | -1.602 | -1.236 |
| 3.66-12.17 Gyr | -2.469 | -1.590 | -1.225 |
| 12.17-13.52 Gyr | -2.569 | -1.613 | -0.925 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(M_{\ast}/M_{\odot})\, | 10.789 | 10.917 | 10.957 |
| {\rm log}_{10}({\rm SFR}) | -1.697 | -1.052 | -0.510 |
| {\rm log}_{10}({\rm sSFR}) | -12.644 | -11.954 | -11.390 |
| {\rm stellar\ age} | 8.784 | 12.783 | 12.843 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(Z_{\ast}/Z_{\odot}) | -1.868 | -1.700 | -1.487 |
| {\rm log}_{10}(Z_{gas}/Z_{\odot})\, | -1.242 | -0.498 | 0.081 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| \tau_2 | 0.037 | 0.091 | 0.151 |
| \delta | -0.915 | -0.703 | -0.306 |
| \tau_1/\tau_2 | 0.384 | 0.896 | 1.453 |
| Q_{PAH} | 0.586 | 1.796 | 4.095 |
| U_{min} | 3.282 | 10.355 | 18.385 |
| {\rm log}_{10}(\gamma_e)\, | -3.200 | -1.755 | -0.674 |
| Parameter | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| {\rm log}_{10}(f_{AGN})\, | -2.172 | -1.592 | -1.270 |
| {\rm log}_{10}(\tau_{AGN})\, | 1.724 | 1.947 | 2.073 |
| Lookback time | Lower (16%) | Median (50%) | Upper (84%) |
|---|---|---|---|
| 0.00-0.03 Gyr | -2.103 | -0.988 | -0.420 |
| 0.03-0.10 Gyr | -3.780 | -1.568 | -0.520 |
| 0.10-0.33 Gyr | -5.538 | -2.875 | -0.926 |
| 0.33-1.10 Gyr | -6.122 | -3.348 | -0.982 |
| 1.10-3.66 Gyr | -4.672 | -2.617 | -0.671 |
| 3.66-12.17 Gyr | -2.358 | -0.924 | 0.967 |
| 12.17-13.52 Gyr | 1.192 | 2.038 | 2.082 |