RA/DEC (2000)
04:59:02.700 +02:16:13.38
74.7612513 +2.2703823
Type
SN Ia
Redshift
0.036322
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-09-22 05:04:12.864
TNS AT
Y
Public
Y
Discovery Mag
20
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025yti - 2025-09-29 03:36:32 LT / SPRAT (GOTO)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22112 2025-09-29 03:36:32 LT / SPRAT Robotic GOTO tns_2025yti_2025-09-29_03-36-32.486_LT_SPRAT_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-09-27 07:48:44 - 2025-09-27 07:48:44 2460945.82551 - 2460945.82551 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520725 2025-09-27 07:48:44 2460945.82551 18.026 0.093 18.99 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-09-19 02:56:34 - 2025-09-19 02:56:34 2460937.62262 - 2460937.62262 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520724 2025-09-19 02:56:34 2460937.62262 19.41 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-09-18 04:57:37 - 2025-09-22 05:04:13 2460936.706684 - 2460940.711257 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520534 2025-09-22 05:04:13 2460940.711257 20 0.19 ABMag L-GOTO GOTO-N_GOTO-1 180
520533 2025-09-18 04:57:37 2460936.706684 19.9 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-10-14 07:23:33 - 2025-10-14 07:23:33 2460962.8080208 - 2460962.8080208 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523836 2025-10-14 07:23:33 2460962.8080208 17.62 0.04 20.17 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-09-23 08:10:27 - 2025-09-23 08:10:27 2460941.8405903 - 2460941.8405903 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523835 2025-09-23 08:10:27 2460941.8405903 20.28 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-17 10:22:41 - 2025-10-01 10:42:37 2460935.932419 - 2460949.9462616 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521515 2025-10-01 10:42:37 2460949.9462616 17.4571 0.0947929 ABMag r-ZTF P48_ZTF-Cam
521513 2025-09-17 10:22:41 2460935.932419 17.8034 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-10-01 09:58:09 - 2025-10-01 09:58:09 2460949.9153819 - 2460949.9153819 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521514 2025-10-01 09:58:09 2460949.9153819 17.6229 0.0482138 ABMag g-ZTF P48_ZTF-Cam
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
273350 2025-10-14 11:38:02 BlackGEM_Bot1 P. Groot, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 04:59:02.703 +02:16:13.47 2025-10-14 07:23:33.000 17.62 BG-q-BlackGem PSN BGEM J045902.70+021613.5 BlackGEM N
272164 2025-10-01 11:47:49 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 04:59:02.700 +02:16:13.38 2025-10-01 09:58:08.996 17.6229 g-ZTF PSN ZTF25abuvvtw ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
271682 2025-09-29 13:12:08 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 04:59:02.707 +02:16:13.41 2025-09-27 07:48:44.064 18.026 orange-ATLAS PSN ATLAS25mct ATLAS N
271587 2025-09-28 08:43:59 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 04:59:02.709 +02:16:13.15 2025-09-22 05:04:12.864 20 L-GOTO Other GOTO25hxe GOTO 2025TNSTR3895....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22112 2025-09-29 08:29:14 Miika Pursiainen M. Pursiainen, D. O'Neill, K. Ackley, M. J. Dyer, J. Lyman, K. Ulaczyk, S. Belkin, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. P. Breton, L. K. Nuttall, D. Pollacco, J. Casares Vel'azquez, T. Killestein, A. Kumar, D. O'Neill on behalf of GOTO collaboration GOTO SN Ia 0.036322 1 GOTO Good template matches to young Type Ia SNe at the redshift of the host (0.036322) 2025TNSCR3916....1P
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22112 2025-09-29 03:36:32 LT / SPRAT Robotic GOTO tns_2025yti_2025-09-29_03-36-32.486_LT_SPRAT_GOTO.dat Object

Comments

TNS
System

Wed, 10/01/2025 - 11:47

Object coordinates updated

Object coordinates updated according to AT-report 272164 of Group ZTF
Previous RA, DEC: 04:59:02.707, +02:16:13.41 (74.7612771429, +2.27039142857)
Updated RA, DEC: 04:59:02.700, +02:16:13.38 (74.7612513, +2.2703823)

TNS
System

Mon, 09/29/2025 - 13:12

Object coordinates updated

Object coordinates updated according to AT-report 271682 of Group ATLAS
Previous RA, DEC: 04:59:02.709, +02:16:13.15 (74.761287, +2.27032)
Updated RA, DEC: 04:59:02.707, +02:16:13.41 (74.7612771429, +2.27039142857)