2025yhj

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Information

Transient

Name: AT2025yhj
Right ascension: 1h52m50.38s
Declination: 15d55m53.61s
Discovery Date: Sept. 22, 2025, 10:03 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.039

Host

Name:
Right ascension: 1h52m50.59s
Declination: 15d55m52.63s
Redshift: None
Photometric Redshift: 0.026

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	4.74
Cutout download	processed	16.9
Global aperture construction	processed	0.59
Local aperture photometry	processed	6.42
Global aperture photometry	processed	6.11
Validate local photometry	processed	0.03
Validate global photometry	processed	16.6
Host information	processed	0.11
Global host SED inference	processed	615.39
Local host SED inference	processed	574.71
Transient information	processed	0.0
Transient MWEBV	processed	0.08
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) = 1h52m50.38s, 15d55m53.61s
semi major axis, semi minor axis (arcsec) = 3.77, 3.77
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	27.55	4.08	20.300	0.161	AB
SDSS_g	60.57	2.31	19.444	0.041	AB
DES_g	69.04	0.46	19.302	0.007	AB
PanSTARRS_g	66.98	0.99	19.335	0.016	AB
SDSS_r	102.91	3.32	18.869	0.035	AB
PanSTARRS_r	94.0	1.43	18.967	0.017	AB
DES_r	107.34	0.9	18.823	0.009	AB
SDSS_i	125.79	4.45	18.651	0.038	AB
PanSTARRS_i	119.88	1.55	18.703	0.014	AB
PanSTARRS_z	132.57	2.9	18.594	0.024	AB
SDSS_z	181.99	15.19	18.250	0.091	AB
DES_z	139.67	1.98	18.537	0.015	AB
PanSTARRS_y	144.28	8.19	18.502	0.062	AB
2MASS_J	148.89	98.14	17.573	0.716	Vega
2MASS_H	243.48	129.68	16.566	0.578	Vega
2MASS_K	103.23	197.12	17.028	2.073	Vega

Aperture details

RA, DEC (J2000) = 1h52m50.65s, 15d55m50.98s
semi major axis, semi minor axis (arcsec) = 4.13, 1.84
angle (degrees, anti-clockwise from east) = -87.59

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	12.4	1.82	21.166	0.159	AB
GALEX_NUV	15.55	1.33	20.921	0.093	AB
SDSS_u	18.5	3.15	20.732	0.185	AB
SDSS_g	45.35	1.93	19.759	0.046	AB
DES_g	44.6	0.36	19.777	0.009	AB
PanSTARRS_g	45.51	0.73	19.755	0.017	AB
SDSS_r	72.13	2.65	19.255	0.040	AB
PanSTARRS_r	59.73	1.03	19.460	0.019	AB
DES_r	67.13	0.69	19.333	0.011	AB
SDSS_i	87.33	3.43	19.047	0.043	AB
PanSTARRS_i	72.95	1.08	19.242	0.016	AB
PanSTARRS_z	83.18	2.0	19.100	0.026	AB
SDSS_z	118.57	11.1	18.715	0.102	AB
DES_z	83.18	1.5	19.100	0.020	AB
PanSTARRS_y	76.76	5.6	19.187	0.079	AB
2MASS_J	284.62	102.5	16.869	0.391	Vega
2MASS_H	188.62	132.54	16.843	0.763	Vega
2MASS_K	-86.64	205.64			Vega
WISE_W1	72.18	7.14	16.555	0.107	Vega
WISE_W2	44.37	12.63	16.443	0.309	Vega
WISE_W3	-24.88	49.18			Vega
WISE_W4	-609.57	336.21			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})\,	8.385	8.526	8.636
{\rm log}_{10}({\rm SFR})	-2.308	-1.567	-0.988
{\rm log}_{10}({\rm sSFR})	-10.770	-10.119	-9.490
{\rm stellar\ age}	4.270	6.694	8.140

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.772	-1.382	-0.938
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.802	-1.253	-0.319

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.171	0.543	0.882
\delta	-0.369	0.039	0.296
\tau_1/\tau_2	0.736	1.081	1.418
Q_{PAH}	1.153	3.217	5.379
U_{min}	3.271	8.444	15.674
{\rm log}_{10}(\gamma_e)\,	-3.131	-1.963	-0.614

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.913	-1.178	-0.324
{\rm log}_{10}(\tau_{AGN})\,	0.927	1.456	1.931

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.681	-2.023	-1.540
0.03-0.10 Gyr	-2.357	-1.491	-0.855
0.10-0.33 Gyr	-2.002	-1.288	-0.795
0.33-1.10 Gyr	-2.230	-1.522	-1.071
1.10-3.64 Gyr	-2.123	-1.486	-1.182
3.64-12.06 Gyr	-1.921	-1.419	-1.219
12.06-13.40 Gyr	-2.276	-1.457	-0.936

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.235	8.391	8.521
{\rm log}_{10}({\rm SFR})	-1.039	-0.794	-0.485
{\rm log}_{10}({\rm sSFR})	-9.458	-9.165	-8.821
{\rm stellar\ age}	5.990	7.568	11.213

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.725	-1.401	-0.988
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.863	-1.350	0.081

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.366	0.630	0.879
\delta	0.155	0.289	0.368
\tau_1/\tau_2	0.584	1.065	1.522
Q_{PAH}	1.252	3.124	5.047
U_{min}	3.653	10.512	18.275
{\rm log}_{10}(\gamma_e)\,	-2.971	-1.711	-0.657

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.042	-2.360	-1.231
{\rm log}_{10}(\tau_{AGN})\,	1.036	1.484	1.922

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.590	-2.422	-1.813
0.03-0.10 Gyr	-0.881	-0.636	-0.323
0.10-0.33 Gyr	-3.839	-1.918	-1.182
0.33-1.10 Gyr	-4.208	-2.116	-1.587
1.10-3.64 Gyr	-4.267	-2.065	-1.557
3.64-12.06 Gyr	-2.935	-1.652	-1.408
12.06-13.40 Gyr	-2.226	-1.305	-0.485