2026knj results

2026knj results

Information

Transient

Name:	`AT2026knj`
Right ascension:	`13h55m11.37s`
Declination:	`21d19m35.18s`
Discovery Date:	`April 20, 2026, 11:25 p.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):

Host

Name:
Right ascension:	`13h55m10.92s`
Declination:	`21d19m35.09s`
Redshift:	`0.028625`
Photometric Redshift:	`None`

Cutout Download Report

Downloaded	Unavailable
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 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_z	GALEX_NUV GALEX_FUV DES_i DES_Y

Processing Status: completed

Task Name	Status	Time (s)
Cutout download	processed	17.53
Transient MWEBV	processed	0.04
Host match	processed	4.99
Host information	processed	0.09
Host MWEBV	processed	0.04
Global aperture construction	processed	0.71
Global aperture photometry	processed	6.68
Validate global photometry	processed	17.52
Global host SED inference	processed	481.17
Local aperture photometry	processed	6.61
Validate local photometry	processed	0.02
Local host SED inference	processed	460.03

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	13h55m11.37s, 21d19m35.18s
semi major axis, semi minor axis (arcsec):	3.49, 3.49
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	71.66	3.43	19.262	0.052	AB
SDSS_g	172.1	3.53	18.311	0.022	AB
DES_g	173.83	0.56	18.300	0.003	AB
PanSTARRS_g	162.29	1.12	18.374	0.007	AB
SDSS_r	262.44	4.42	17.852	0.018	AB
PanSTARRS_r	249.85	0.88	17.906	0.004	AB
DES_r	292.5	1.47	17.735	0.005	AB
SDSS_i	336.81	5.33	17.582	0.017	AB
PanSTARRS_i	299.29	1.64	17.710	0.006	AB
PanSTARRS_z	344.67	1.98	17.557	0.006	AB
SDSS_z	393.43	9.47	17.413	0.026	AB
DES_z	408.22	5.17	17.373	0.014	AB
PanSTARRS_y	407.59	4.92	17.374	0.013	AB
2MASS_J	400.58	82.14	16.498	0.223	Vega
2MASS_H	588.13	142.02	15.609	0.262	Vega
2MASS_K	535.98	124.16	15.239	0.251	Vega

Aperture details

RA, DEC (J2000):	13h55m10.91s, 21d19m35.37s
semi major axis, semi minor axis (arcsec):	11.05, 6.95
angle (degrees, anti-clockwise from east):	-102.66

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	624.25	9.29	16.912	0.016	AB
SDSS_g	1517.42	10.38	15.947	0.007	AB
DES_g	1548.74	1.64	15.925	0.001	AB
PanSTARRS_g	1595.55	2.87	15.893	0.002	AB
SDSS_r	2452.92	13.31	15.426	0.006	AB
PanSTARRS_r	2547.15	2.28	15.385	0.001	AB
DES_r	2721.95	4.4	15.313	0.002	AB
SDSS_i	3167.24	15.8	15.148	0.005	AB
PanSTARRS_i	3139.79	4.16	15.158	0.001	AB
PanSTARRS_z	3703.18	5.01	14.979	0.001	AB
SDSS_z	3826.92	25.62	14.943	0.007	AB
DES_z	3947.74	15.91	14.909	0.004	AB
PanSTARRS_y	4340.87	12.31	14.806	0.003	AB
2MASS_J	5028.98	216.87	13.751	0.047	Vega
2MASS_H	6402.14	373.02	13.017	0.063	Vega
2MASS_K	5482.68	327.24	12.715	0.065	Vega
WISE_W1	2647.92	29.6	12.644	0.012	Vega
WISE_W2	1655.63	32.41	12.514	0.021	Vega
WISE_W3	7873.67	116.67	8.986	0.016	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.788	8.956	9.122
{\rm log}_{10}({\rm SFR})	-1.140	-0.619	-0.104
{\rm log}_{10}({\rm sSFR})	-10.163	-9.548	-8.955
{\rm stellar\ age}	4.681	6.860	8.678

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.483	-0.783	-0.336
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.052	0.179	0.364

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.207	0.492	0.889
\delta	-0.594	-0.209	0.142
\tau_1/\tau_2	0.653	1.002	1.389
Q_{PAH}	0.515	1.825	4.173
U_{min}	2.857	8.184	15.299
{\rm log}_{10}(\gamma_e)\,	-3.324	-1.871	-0.795

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.983	-2.297	-0.763
{\rm log}_{10}(\tau_{AGN})\,	0.958	1.414	1.913

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.144	-0.917	-0.621
0.03-0.10 Gyr	-1.173	-0.524	0.021
0.10-0.33 Gyr	-1.741	-0.963	-0.511
0.33-1.10 Gyr	-2.101	-1.209	-0.819
1.10-3.63 Gyr	-1.804	-1.130	-0.807
3.63-12.04 Gyr	-1.562	-1.034	-0.775
12.04-13.37 Gyr	-1.721	-0.969	-0.305

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.977	10.067	10.151
{\rm log}_{10}({\rm SFR})	-0.320	0.228	0.652
{\rm log}_{10}({\rm sSFR})	-10.409	-9.894	-9.379
{\rm stellar\ age}	7.041	7.983	10.414

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.671	-0.498	-0.354
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	0.192	0.331	0.435

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.163	0.281	0.488
\delta	-0.374	-0.086	0.254
\tau_1/\tau_2	0.570	0.952	1.362
Q_{PAH}	0.486	1.623	3.728
U_{min}	2.756	7.780	14.946
{\rm log}_{10}(\gamma_e)\,	-3.058	-2.093	-1.286

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.069	-2.965	-2.019
{\rm log}_{10}(\tau_{AGN})\,	1.051	1.565	1.967

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.302	-0.106	0.117
0.03-0.10 Gyr	-0.367	0.332	0.779
0.10-0.33 Gyr	-1.395	-0.536	-0.115
0.33-1.10 Gyr	-1.560	-0.607	-0.249
1.10-3.63 Gyr	-1.160	-0.311	0.071
3.63-12.04 Gyr	-0.177	0.162	0.299
12.04-13.37 Gyr	-0.180	0.359	1.037