2026gu

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Information

Transient

Name: AT2026gu
Right ascension: 5h01m00.09s
Declination: -18d20m23.36s
Discovery Date: Jan. 8, 2026, 11:03 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.055

Host

Name:
Right ascension: 5h00m59.78s
Declination: -18d20m23.38s
Redshift: None
Photometric Redshift: 0.078

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	7.27
Transient MWEBV	processed	0.1
Host match	processed	5.83
Host information	processed	0.13
Host MWEBV	processed	0.11
Global aperture construction	processed	0.67
Global aperture photometry	processed	5.41
Validate global photometry	processed	15.21
Global host SED inference	processed	474.87
Local aperture photometry	processed	5.2
Validate local photometry	processed	0.02
Local host SED inference	processed	474.51

Cutout Download Report

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:

Aperture Photometry

Aperture details

RA, DEC (J2000) = 5h01m00.09s, -18d20m23.36s
semi major axis, semi minor axis (arcsec) = 1.35, 1.35
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	2.89	0.09	22.749	0.036	AB
PanSTARRS_g	2.67	0.44	22.834	0.179	AB
PanSTARRS_r	5.11	0.36	22.130	0.077	AB
DES_r	6.06	0.15	21.943	0.027	AB
PanSTARRS_i	7.02	0.36	21.784	0.056	AB
PanSTARRS_z	10.91	0.92	21.305	0.091	AB
DES_z	10.1	0.57	21.389	0.061	AB
PanSTARRS_y	9.76	2.81	21.426	0.313	AB

Aperture details

RA, DEC (J2000) = 5h00m59.76s, -18d20m23.17s
semi major axis, semi minor axis (arcsec) = 5.31, 4.64
angle (degrees, anti-clockwise from east) = -135.62

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	2.77	2.67	22.795	1.048	AB
GALEX_NUV	3.92	1.79	22.418	0.497	AB
DES_g	216.9	0.61	18.059	0.003	AB
PanSTARRS_g	227.09	1.7	18.010	0.008	AB
PanSTARRS_r	445.9	1.37	17.277	0.003	AB
DES_r	486.43	1.08	17.182	0.002	AB
PanSTARRS_i	614.23	1.35	16.929	0.002	AB
PanSTARRS_z	791.63	3.37	16.654	0.005	AB
DES_z	857.42	4.26	16.567	0.005	AB
PanSTARRS_y	908.37	10.22	16.504	0.012	AB
2MASS_J	1256.57	149.76	15.257	0.129	Vega
2MASS_H	1480.78	213.87	14.606	0.157	Vega
2MASS_K	770.19	267.95	14.846	0.378	Vega
WISE_W1	452.8	13.68	14.561	0.033	Vega
WISE_W2	263.6	16.47	14.509	0.068	Vega
WISE_W3	23.28	61.71	15.309	2.878	Vega
WISE_W4	257.96	376.05	11.251	1.583	Vega

Imaging data

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Spectral Energy Distribution

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Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.343	8.520	8.663
{\rm log}_{10}({\rm SFR})	-2.190	-1.508	-0.810
{\rm log}_{10}({\rm sSFR})	-10.708	-10.070	-9.300
{\rm stellar\ age}	2.388	5.926	7.311

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.511	-0.886	-0.282
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.643	-0.869	0.084

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.747	1.260	1.836
\delta	-0.002	0.188	0.323
\tau_1/\tau_2	0.723	1.085	1.446
Q_{PAH}	0.994	2.752	5.377
U_{min}	2.707	7.898	15.493
{\rm log}_{10}(\gamma_e)\,	-2.846	-1.760	-0.732

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-1.889	-0.148	0.297
{\rm log}_{10}(\tau_{AGN})\,	1.072	1.475	1.873

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.991	-1.863	-1.241
0.03-0.10 Gyr	-2.249	-1.471	-0.716
0.10-0.33 Gyr	-2.109	-1.381	-0.758
0.33-1.07 Gyr	-2.390	-1.429	-0.988
1.07-3.50 Gyr	-2.420	-1.408	-1.116
3.50-11.45 Gyr	-2.726	-1.452	-1.216
11.45-12.72 Gyr	-2.975	-1.548	-0.977

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.295	10.401	10.531
{\rm log}_{10}({\rm SFR})	-5.047	-2.033	-0.764
{\rm log}_{10}({\rm sSFR})	-15.613	-12.432	-11.067
{\rm stellar\ age}	6.772	7.878	11.927

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.499	-1.146	-0.887
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.516	-0.614	0.163

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.209	0.347	0.514
\delta	-0.907	-0.688	-0.392
\tau_1/\tau_2	0.517	0.957	1.391
Q_{PAH}	0.822	2.476	4.912
U_{min}	3.322	10.282	18.403
{\rm log}_{10}(\gamma_e)\,	-2.533	-1.409	-0.469

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.105	-2.852	-1.929
{\rm log}_{10}(\tau_{AGN})\,	1.145	1.592	1.940

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-6.475	-2.805	-1.135
0.03-0.10 Gyr	-5.809	-2.211	-0.682
0.10-0.33 Gyr	-5.130	-1.998	-0.380
0.33-1.07 Gyr	-4.296	-1.646	-0.148
1.07-3.50 Gyr	-3.159	-0.675	0.413
3.50-11.45 Gyr	-1.378	0.462	0.705
11.45-12.72 Gyr	-1.004	0.727	1.668