2025aggn

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Information

Transient

Name: AT2025aggn
Right ascension: 4h24m47.56s
Declination: -25d01m01.65s
Discovery Date: Dec. 10, 2025, 9 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.042

Host

Name:
Right ascension: 4h24m47.45s
Declination: -25d01m00.46s
Redshift: None
Photometric Redshift: 0.066

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	7.48
Transient MWEBV	processed	0.1
Host match	processed	6.58
Host information	processed	0.16
Host MWEBV	processed	0.04
Global aperture construction	processed	0.65
Global aperture photometry	processed	5.77
Validate global photometry	processed	14.91
Global host SED inference	processed	434.16
Local aperture photometry	processed	5.74
Validate local photometry	processed	0.02
Local host SED inference	processed	461.3

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) = 4h24m47.56s, -25d01m01.65s
semi major axis, semi minor axis (arcsec) = 1.58, 1.58
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	27.78	0.17	20.290	0.007	AB
PanSTARRS_g	23.18	0.46	20.487	0.021	AB
PanSTARRS_r	30.64	0.67	20.184	0.024	AB
DES_r	38.5	0.26	19.936	0.007	AB
PanSTARRS_i	41.36	0.54	19.859	0.014	AB
PanSTARRS_z	43.38	1.63	19.807	0.041	AB
DES_z	46.22	0.85	19.738	0.020	AB
PanSTARRS_y	35.5	3.07	20.024	0.094	AB

Aperture details

RA, DEC (J2000) = 4h24m47.43s, -25d01m00.47s
semi major axis, semi minor axis (arcsec) = 7.13, 6.18
angle (degrees, anti-clockwise from east) = -50.92

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	23.14	4.72	20.489	0.221	AB
GALEX_NUV	33.79	3.67	20.078	0.118	AB
DES_g	136.68	0.45	18.561	0.004	AB
PanSTARRS_g	145.48	1.9	18.493	0.014	AB
PanSTARRS_r	194.56	2.77	18.177	0.015	AB
DES_r	221.74	0.72	18.035	0.004	AB
PanSTARRS_i	290.15	2.22	17.743	0.008	AB
PanSTARRS_z	333.31	6.78	17.593	0.022	AB
PanSTARRS_y	381.97	12.82	17.445	0.036	AB
2MASS_J	421.4	188.65	16.443	0.486	Vega
2MASS_H	213.11	263.25	16.711	1.341	Vega
2MASS_K	215.66	344.68	16.228	1.735	Vega
WISE_W1	229.64	13.05	15.298	0.062	Vega
WISE_W2	152.42	16.16	15.103	0.115	Vega
WISE_W3	202.65	70.1	12.959	0.376	Vega
WISE_W4	445.71	406.66	10.657	0.991	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})\,	8.351	8.566	8.708
{\rm log}_{10}({\rm SFR})	-1.461	-0.900	-0.400
{\rm log}_{10}({\rm sSFR})	-10.093	-9.457	-8.868
{\rm stellar\ age}	1.880	4.704	6.370

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.392	-0.754	-0.270
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.841	-1.605	-1.060

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.110	0.287	0.600
\delta	-0.707	-0.284	0.133
\tau_1/\tau_2	0.677	1.034	1.415
Q_{PAH}	1.062	3.013	5.296
U_{min}	3.359	8.605	15.928
{\rm log}_{10}(\gamma_e)\,	-2.776	-1.751	-0.694

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.116	-0.630	-0.119
{\rm log}_{10}(\tau_{AGN})\,	1.190	1.556	2.006

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.403	-1.107	-0.840
0.03-0.10 Gyr	-1.582	-0.842	-0.284
0.10-0.33 Gyr	-1.435	-0.815	-0.409
0.33-1.08 Gyr	-1.745	-1.035	-0.718
1.08-3.53 Gyr	-2.278	-1.379	-1.037
3.53-11.59 Gyr	-2.661	-1.594	-1.233
11.59-12.88 Gyr	-2.751	-1.607	-1.068

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.750	9.826	9.920
{\rm log}_{10}({\rm SFR})	-0.199	0.101	0.384
{\rm log}_{10}({\rm sSFR})	-10.041	-9.726	-9.448
{\rm stellar\ age}	7.444	8.676	11.485

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.921	-0.528	-0.281
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.654	-0.381	0.162

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.108	0.262	0.509
\delta	-0.138	0.180	0.336
\tau_1/\tau_2	0.780	1.213	1.634
Q_{PAH}	0.676	2.442	4.462
U_{min}	2.486	7.849	15.496
{\rm log}_{10}(\gamma_e)\,	-2.878	-1.632	-0.618

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.197	-2.940	-1.847
{\rm log}_{10}(\tau_{AGN})\,	1.042	1.518	1.896

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.681	-0.429	-0.233
0.03-0.10 Gyr	-0.109	0.224	0.525
0.10-0.33 Gyr	-1.878	-0.814	-0.302
0.33-1.08 Gyr	-2.588	-1.151	-0.637
1.08-3.53 Gyr	-2.265	-1.050	-0.512
3.53-11.59 Gyr	-0.859	-0.105	0.050
11.59-12.88 Gyr	-0.207	0.448	0.998