2025ssj

Download data

Information

Transient

Name: AT2025ssj
Right ascension: 16h20m20.67s
Declination: 1d13m38.91s
Discovery Date: July 26, 2025, 7:15 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.067

Host

Name: 57868
Right ascension: 16h20m20.77s
Declination: 1d13m42.33s
Redshift: 0.032240
Photometric Redshift:

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	4.68
Cutout download	processed	30.43
Global aperture construction	processed	0.67
Local aperture photometry	processed	7.01
Global aperture photometry	processed	6.54
Validate local photometry	processed	0.03
Validate global photometry	processed	17.58
Host information	processed	0.15
Global host SED inference	processed	430.74
Local host SED inference	processed	540.53
Transient information	processed	0.0
Transient MWEBV	processed	0.15
Host MWEBV	processed	0.04
Processing status	completed	N/A	N/A

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) = 16h20m20.67s, 1d13m38.91s
semi major axis, semi minor axis (arcsec) = 3.11, 3.11
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	54.46	2.82	19.560	0.056	AB
SDSS_g	189.18	3.67	18.208	0.021	AB
DES_g	200.4	0.93	18.145	0.005	AB
PanSTARRS_g	192.54	1.01	18.189	0.006	AB
SDSS_r	306.93	4.77	17.682	0.017	AB
PanSTARRS_r	302.71	0.95	17.697	0.003	AB
DES_r	337.71	1.95	17.579	0.006	AB
SDSS_i	398.57	5.72	17.399	0.016	AB
PanSTARRS_i	388.71	0.87	17.426	0.002	AB
PanSTARRS_z	419.44	2.45	17.343	0.006	AB
SDSS_z	478.24	10.88	17.201	0.025	AB
DES_z	506.52	6.79	17.139	0.015	AB
PanSTARRS_y	549.65	6.91	17.050	0.014	AB
2MASS_J	688.18	78.42	15.911	0.124	Vega
2MASS_H	702.29	122.78	15.416	0.190	Vega
2MASS_K	585.67	131.81	15.143	0.244	Vega

Aperture details

RA, DEC (J2000) = 16h20m20.79s, 1d13m42.36s
semi major axis, semi minor axis (arcsec) = 19.2, 17.3
angle (degrees, anti-clockwise from east) = -50.75

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	535.3	14.24	17.079	0.029	AB
SDSS_g	2142.07	13.12	15.573	0.007	AB
DES_g	2201.48	3.25	15.543	0.002	AB
PanSTARRS_g	2139.52	5.72	15.574	0.003	AB
SDSS_r	3215.25	17.05	15.132	0.006	AB
PanSTARRS_r	3178.17	5.32	15.145	0.002	AB
DES_r	3572.75	6.75	15.017	0.002	AB
SDSS_i	4185.9	22.19	14.846	0.006	AB
PanSTARRS_i	4142.64	4.88	14.857	0.001	AB
PanSTARRS_z	4202.33	14.04	14.841	0.004	AB
SDSS_z	4902.33	57.95	14.674	0.013	AB
DES_z	5042.66	22.22	14.643	0.005	AB
PanSTARRS_y	5682.01	40.13	14.514	0.008	AB
2MASS_J	5815.23	462.22	13.594	0.086	Vega
2MASS_H	6867.78	725.12	12.940	0.115	Vega
2MASS_K	6908.61	779.87	12.464	0.123	Vega
WISE_W1	3270.15	45.93	12.415	0.015	Vega
WISE_W2	2047.01	52.93	12.283	0.028	Vega
WISE_W3	9728.25	216.65	8.756	0.024	Vega
WISE_W4	11521.43	1232.36	7.126	0.116	Vega

Imaging data

Spectral Energy Distribution

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.980	9.215	9.370
{\rm log}_{10}({\rm SFR})	-1.137	-0.605	-0.183
{\rm log}_{10}({\rm sSFR})	-10.458	-9.778	-9.264
{\rm stellar\ age}	3.043	6.097	8.446

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.749	-1.324	-0.652
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.452	-0.104	0.083

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.265	0.649	1.048
\delta	-0.590	-0.201	0.072
\tau_1/\tau_2	0.718	1.054	1.411
Q_{PAH}	0.402	1.618	3.191
U_{min}	2.589	7.298	14.111
{\rm log}_{10}(\gamma_e)\,	-3.558	-2.693	-1.431

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.338	-2.830	-0.400
{\rm log}_{10}(\tau_{AGN})\,	0.976	1.329	1.866

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.961	-0.628	-0.345
0.03-0.10 Gyr	-1.557	-0.615	-0.107
0.10-0.33 Gyr	-1.699	-0.549	0.007
0.33-1.10 Gyr	-1.808	-0.738	-0.289
1.10-3.62 Gyr	-1.722	-0.853	-0.494
3.62-11.99 Gyr	-1.654	-0.856	-0.497
11.99-13.32 Gyr	-1.733	-0.833	-0.157

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.925	10.098	10.319
{\rm log}_{10}({\rm SFR})	-0.034	0.273	0.520
{\rm log}_{10}({\rm sSFR})	-10.300	-9.829	-9.456
{\rm stellar\ age}	3.053	5.803	7.654

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.321	-0.863	-0.513
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.325	-0.182	-0.089

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.407	0.527	0.660
\delta	-0.648	-0.300	0.214
\tau_1/\tau_2	0.477	0.816	1.155
Q_{PAH}	0.252	0.557	1.070
U_{min}	2.453	6.426	12.381
{\rm log}_{10}(\gamma_e)\,	-3.701	-3.237	-2.631

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.332	-3.486	-2.705
{\rm log}_{10}(\tau_{AGN})\,	0.940	1.407	1.883

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	0.263	0.417	0.543
0.03-0.10 Gyr	-0.440	0.197	0.538
0.10-0.33 Gyr	-0.373	0.282	0.655
0.33-1.10 Gyr	-0.151	0.374	0.674
1.10-3.62 Gyr	-0.163	0.255	0.512
3.62-11.99 Gyr	-0.628	0.069	0.443
11.99-13.32 Gyr	-0.972	0.009	0.621