2025actn

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Information

Transient

Name: SN2025actn
Right ascension: 3h52m58.86s
Declination: -23d04m44.24s
Discovery Date: Nov. 8, 2025, 11:05 a.m.
Classification: SN Ia
Redshift: 0.083000
MW E(B-V): 0.035

Host

Name:
Right ascension: 3h52m58.80s
Declination: -23d04m43.91s
Redshift: None
Photometric Redshift: 0.073

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	4.41
Transient MWEBV	processed	0.08
Host match	processed	5.91
Host information	processed	0.11
Host MWEBV	processed	0.12
Global aperture construction	processed	0.61
Global aperture photometry	processed	4.1
Validate global photometry	processed	10.24
Global host SED inference	processed	575.85
Local aperture photometry	processed	4.13
Validate local photometry	processed	0.02
Local host SED inference	processed	508.41

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) = 3h52m58.86s, -23d04m44.24s
semi major axis, semi minor axis (arcsec) = 1.28, 1.28
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	162.1	0.41	18.376	0.003	AB
PanSTARRS_r	273.48	0.53	17.808	0.002	AB
PanSTARRS_i	403.63	0.69	17.385	0.002	AB
PanSTARRS_z	491.78	1.0	17.171	0.002	AB
DES_z	689.59	3.06	16.804	0.005	AB
PanSTARRS_y	592.39	2.26	16.968	0.004	AB

Aperture details

RA, DEC (J2000) = 3h52m58.79s, -23d04m43.80s
semi major axis, semi minor axis (arcsec) = 7.57, 5.32
angle (degrees, anti-clockwise from east) = -71.89

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_NUV	4.69	3.32	22.222	0.769	AB
DES_g	524.8	0.78	17.100	0.002	AB
PanSTARRS_r	1018.21	2.09	16.380	0.002	AB
PanSTARRS_i	1439.35	3.0	16.005	0.002	AB
PanSTARRS_z	1753.45	4.25	15.790	0.003	AB
DES_z	1895.47	5.21	15.706	0.003	AB
PanSTARRS_y	2143.94	10.92	15.572	0.006	AB
2MASS_J	2793.88	171.88	14.390	0.067	Vega
2MASS_H	3209.72	254.39	13.766	0.086	Vega
2MASS_K	2437.59	310.72	13.595	0.138	Vega
WISE_W1	1125.09	18.08	13.573	0.017	Vega
WISE_W2	689.98	21.21	13.464	0.033	Vega
WISE_W4	-426.7	307.9			Vega

Imaging data

Click the image to load the interactive plot.

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})\,	9.941	10.252	10.348
{\rm log}_{10}({\rm SFR})	-0.380	0.386	1.123
{\rm log}_{10}({\rm sSFR})	-10.631	-9.839	-8.807
{\rm stellar\ age}	1.645	6.351	8.450

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.480	-0.057	0.113
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.307	-0.509	-0.023

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.273	0.942	1.593
\delta	-0.470	-0.097	0.218
\tau_1/\tau_2	0.647	1.051	1.463
Q_{PAH}	0.585	2.144	4.172
U_{min}	2.968	8.176	16.158
{\rm log}_{10}(\gamma_e)\,	-3.271	-1.957	-0.604

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.222	-1.302	-0.249
{\rm log}_{10}(\tau_{AGN})\,	1.008	1.580	2.004

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.538	-0.052	0.439
0.03-0.10 Gyr	-0.528	0.463	1.253
0.10-0.33 Gyr	-0.642	0.201	1.119
0.33-1.07 Gyr	-1.008	-0.003	0.687
1.07-3.49 Gyr	-1.450	0.002	0.453
3.49-11.40 Gyr	-1.812	0.191	0.493
11.40-12.66 Gyr	-1.292	0.301	1.005

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.648	10.785	10.913
{\rm log}_{10}({\rm SFR})	-3.895	-1.316	0.143
{\rm log}_{10}({\rm sSFR})	-14.579	-12.131	-10.574
{\rm stellar\ age}	6.186	7.716	11.744

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.264	-0.895	-0.690
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.280	-0.367	0.231

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.137	0.334	0.521
\delta	-0.902	-0.651	-0.303
\tau_1/\tau_2	0.579	1.000	1.420
Q_{PAH}	0.366	1.588	4.273
U_{min}	3.329	9.659	17.683
{\rm log}_{10}(\gamma_e)\,	-2.584	-1.238	-0.401

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.344	-3.319	-2.305
{\rm log}_{10}(\tau_{AGN})\,	1.135	1.594	1.959

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-5.254	-1.948	-0.562
0.03-0.10 Gyr	-4.687	-1.378	0.239
0.10-0.33 Gyr	-4.184	-1.224	0.466
0.33-1.07 Gyr	-3.654	-1.030	0.432
1.07-3.49 Gyr	-2.579	-0.031	0.874
3.49-11.40 Gyr	-0.877	0.808	1.084
11.40-12.66 Gyr	-0.656	1.064	2.045