2026atw

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Information

Transient

Name: AT2026atw
Right ascension: 17h29m00.08s
Declination: 56d46m48.11s
Discovery Date: Jan. 19, 2026, 3:23 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.027

Host

Name:
Right ascension: 17h29m00.07s
Declination: 56d46m48.67s
Redshift: None
Photometric Redshift: 0.065

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	9.03
Transient MWEBV	processed	0.04
Host match	processed	4.73
Host information	processed	0.1
Host MWEBV	processed	0.04
Global aperture construction	processed	0.63
Global aperture photometry	processed	5.01
Validate global photometry	processed	15.96
Global host SED inference	processed	472.62
Local aperture photometry	processed	4.59
Validate local photometry	processed	0.02
Local host SED inference	processed	512.39

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) = 17h29m00.08s, 56d46m48.11s
semi major axis, semi minor axis (arcsec) = 1.61, 1.61
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	8.37	1.55	21.594	0.201	AB
SDSS_g	19.53	1.22	20.673	0.068	AB
PanSTARRS_g	20.51	0.42	20.620	0.022	AB
SDSS_r	23.52	1.47	20.471	0.068	AB
PanSTARRS_r	24.59	0.57	20.423	0.025	AB
SDSS_i	31.43	1.93	20.157	0.067	AB
PanSTARRS_i	27.87	0.61	20.287	0.024	AB
PanSTARRS_z	30.55	1.19	20.187	0.042	AB
SDSS_z	23.25	5.13	20.484	0.240	AB
PanSTARRS_y	34.02	2.92	20.071	0.093	AB

Aperture details

RA, DEC (J2000) = 17h29m00.07s, 56d46m48.85s
semi major axis, semi minor axis (arcsec) = 5.38, 3.69
angle (degrees, anti-clockwise from east) = -38.38

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	7.56	0.81	21.704	0.117	AB
GALEX_NUV	8.19	0.58	21.617	0.077	AB
SDSS_u	22.23	4.12	20.533	0.201	AB
SDSS_g	42.49	2.11	19.829	0.054	AB
PanSTARRS_g	66.57	1.15	19.342	0.019	AB
SDSS_r	53.0	2.88	19.589	0.059	AB
PanSTARRS_r	57.58	1.55	19.499	0.029	AB
SDSS_i	78.67	4.28	19.160	0.059	AB
PanSTARRS_i	64.94	1.66	19.369	0.028	AB
PanSTARRS_z	75.78	3.22	19.201	0.046	AB
SDSS_z	8.35	13.91	21.596	1.809	AB
PanSTARRS_y	74.28	7.92	19.223	0.116	AB
2MASS_J	-47.25	126.35			Vega
2MASS_H	-114.27	199.57			Vega
2MASS_K	136.44	222.66	16.725	1.772	Vega
WISE_W1	21.98	9.81	17.846	0.485	Vega
WISE_W2	5.33	13.26	18.745	2.704	Vega
WISE_W3	51.95	29.26	14.437	0.611	Vega
WISE_W4	-35.55	170.95			Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

Click the image to load the interactive plot.

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	7.912	8.241	8.472
{\rm log}_{10}({\rm SFR})	-2.368	-1.102	-0.158
{\rm log}_{10}({\rm sSFR})	-10.563	-9.471	-7.929
{\rm stellar\ age}	0.109	1.309	5.559

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.581	-0.921	-0.162
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.396	-0.669	0.057

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.136	0.334	0.892
\delta	-0.719	-0.273	0.154
\tau_1/\tau_2	0.591	1.060	1.537
Q_{PAH}	0.929	2.857	5.272
U_{min}	3.480	9.706	17.613
{\rm log}_{10}(\gamma_e)\,	-3.066	-1.967	-0.639

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-1.396	-0.405	0.094
{\rm log}_{10}(\tau_{AGN})\,	1.090	1.509	1.955

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.982	-2.312	-1.522
0.03-0.10 Gyr	-2.529	-0.978	0.004
0.10-0.33 Gyr	-3.019	-0.937	-0.228
0.33-1.08 Gyr	-4.875	-1.809	-0.879
1.08-3.54 Gyr	-6.575	-2.984	-1.428
3.54-11.61 Gyr	-7.647	-3.512	-1.618
11.61-12.90 Gyr	-8.091	-3.137	-1.500

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.396	8.637	8.821
{\rm log}_{10}({\rm SFR})	-1.075	-0.665	-0.230
{\rm log}_{10}({\rm sSFR})	-9.836	-9.327	-8.763
{\rm stellar\ age}	0.541	2.977	5.623

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.235	-0.388	0.052
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.999	-0.722	-0.513

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.135	0.312	0.523
\delta	-0.681	-0.257	0.053
\tau_1/\tau_2	0.593	0.980	1.386
Q_{PAH}	2.205	4.437	6.008
U_{min}	3.242	8.716	16.095
{\rm log}_{10}(\gamma_e)\,	-2.629	-1.449	-0.446

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.483	-1.585	-0.772
{\rm log}_{10}(\tau_{AGN})\,	0.902	1.396	1.889

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.005	-0.769	-0.512
0.03-0.10 Gyr	-1.233	-0.643	-0.133
0.10-0.33 Gyr	-0.954	-0.479	-0.012
0.33-1.08 Gyr	-2.029	-0.860	-0.439
1.08-3.54 Gyr	-3.344	-1.470	-0.990
3.54-11.61 Gyr	-3.995	-1.901	-1.239
11.61-12.90 Gyr	-4.014	-1.853	-1.068