2025ykr

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Information

Transient

Name: SN2025ykr
Right ascension: 8h45m28.73s
Declination: 61d07m54.45s
Discovery Date: Sept. 20, 2025, 10:43 a.m.
Classification: SN Ia
Redshift: 0.026485
MW E(B-V): 0.059

Host

Name: 2612485
Right ascension: 8h45m29.97s
Declination: 61d07m54.61s
Redshift: 0.027245
Photometric Redshift:

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	15.81
Transient MWEBV	processed	0.04
Host match	processed	4.6
Host information	processed	0.05
Host MWEBV	processed	0.04
Global aperture construction	processed	0.64
Global aperture photometry	processed	5.39
Validate global photometry	processed	15.08
Global host SED inference	processed	567.36
Local aperture photometry	processed	5.2
Validate local photometry	processed	0.02
Local host SED inference	processed	459.25

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) = 8h45m28.73s, 61d07m54.45s
semi major axis, semi minor axis (arcsec) = 3.66, 3.66
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	17.67	3.28	20.782	0.201	AB
SDSS_g	74.11	2.43	19.225	0.036	AB
PanSTARRS_g	77.16	0.83	19.181	0.012	AB
SDSS_r	165.74	3.69	18.351	0.024	AB
PanSTARRS_r	164.39	1.41	18.360	0.009	AB
SDSS_i	252.68	4.92	17.894	0.021	AB
PanSTARRS_i	240.4	1.14	17.948	0.005	AB
PanSTARRS_z	288.2	2.39	17.751	0.009	AB
SDSS_z	331.7	10.07	17.598	0.033	AB
PanSTARRS_y	404.3	6.99	17.383	0.019	AB
2MASS_J	470.07	76.21	16.325	0.176	Vega
2MASS_H	458.46	134.4	15.879	0.318	Vega
2MASS_K	593.32	122.75	15.129	0.225	Vega

Aperture details

RA, DEC (J2000) = 8h45m29.99s, 61d07m54.68s
semi major axis, semi minor axis (arcsec) = 15.82, 5.32
angle (degrees, anti-clockwise from east) = -74.36

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	8.18	1.82	21.618	0.241	AB
GALEX_NUV	9.02	1.64	21.512	0.197	AB
SDSS_u	215.48	8.64	18.067	0.044	AB
SDSS_g	1153.39	9.14	16.245	0.009	AB
PanSTARRS_g	1270.8	2.14	16.140	0.002	AB
SDSS_r	2696.3	14.04	15.323	0.006	AB
PanSTARRS_r	2683.03	3.61	15.328	0.001	AB
SDSS_i	4091.05	17.91	14.870	0.005	AB
PanSTARRS_i	4061.23	2.91	14.878	0.001	AB
PanSTARRS_z	5239.02	6.13	14.602	0.001	AB
SDSS_z	5698.99	29.69	14.511	0.006	AB
PanSTARRS_y	6426.66	17.9	14.380	0.003	AB
2MASS_J	8173.17	204.31	13.224	0.027	Vega
2MASS_H	10728.29	357.73	12.456	0.036	Vega
2MASS_K	8977.46	327.84	12.179	0.040	Vega
WISE_W1	3588.43	33.34	12.314	0.010	Vega
WISE_W2	1980.32	35.0	12.319	0.019	Vega
WISE_W3	479.82	91.38	12.023	0.207	Vega
WISE_W4	1163.85	619.08	9.615	0.578	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})\,	9.032	9.163	9.281
{\rm log}_{10}({\rm SFR})	-1.492	-0.965	-0.537
{\rm log}_{10}({\rm sSFR})	-10.656	-10.101	-9.690
{\rm stellar\ age}	5.917	7.729	10.443

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.628	-1.107	-0.517
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.062	0.187	0.359

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.677	1.220	1.518
\delta	-0.393	-0.124	0.094
\tau_1/\tau_2	0.708	1.034	1.354
Q_{PAH}	0.383	1.669	3.375
U_{min}	2.428	7.254	14.045
{\rm log}_{10}(\gamma_e)\,	-3.680	-3.066	-1.543

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.257	-2.428	-0.764
{\rm log}_{10}(\tau_{AGN})\,	0.882	1.213	1.721

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.333	-0.861	-0.518
0.03-0.10 Gyr	-2.030	-1.074	-0.526
0.10-0.33 Gyr	-2.305	-1.249	-0.692
0.33-1.10 Gyr	-2.379	-1.292	-0.768
1.10-3.64 Gyr	-2.101	-1.049	-0.670
3.64-12.05 Gyr	-1.317	-0.782	-0.590
12.05-13.39 Gyr	-1.229	-0.634	0.139

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.453	10.481	10.507
{\rm log}_{10}({\rm SFR})	-2.429	-1.840	-1.345
{\rm log}_{10}({\rm sSFR})	-12.923	-12.334	-11.825
{\rm stellar\ age}	12.301	12.700	12.720

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.605	-0.459	-0.335
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.479	-0.632	0.062

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.120	0.205	0.310
\delta	-0.756	-0.494	-0.265
\tau_1/\tau_2	0.544	1.002	1.485
Q_{PAH}	0.236	0.755	1.766
U_{min}	4.058	9.820	17.359
{\rm log}_{10}(\gamma_e)\,	-1.682	-1.065	-0.541

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.676	-4.010	-3.104
{\rm log}_{10}(\tau_{AGN})\,	1.059	1.608	1.985

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.915	-1.980	-1.519
0.03-0.10 Gyr	-3.380	-1.904	-1.267
0.10-0.33 Gyr	-5.358	-2.738	-1.704
0.33-1.10 Gyr	-6.678	-3.310	-1.940
1.10-3.64 Gyr	-5.139	-2.905	-1.626
3.64-12.05 Gyr	-2.860	-1.775	-0.305
12.05-13.39 Gyr	1.551	1.602	1.632