RA/DEC (2000)
20:16:27.732 +10:19:51.13
304.1155495 +10.3308700375
Type
SN Ia
Redshift
0.06
Discovery ReportClassification Report
Related AstroNotes: 2025-275
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-08-13 10:49:14.304
TNS AT
Y
Public
Y
Discovery Mag
19.602
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ttp - 2025-08-30 02:18:52 NOT / ALFOSC (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
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
   
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
21919 2025-08-30 02:18:52 NOT / ALFOSC 1200 I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025ttp_2025-08-30_02-18-52.439_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2025-08-12 22:47:15 - 2025-08-13 22:25:22 2460900.449483 - 2460901.434282 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508774 2025-08-13 22:25:22 2460901.434282 19.24 0.17 ABMag L-GOTO GOTO-N_GOTO-1 180
508773 2025-08-12 22:47:15 2460900.449483 18.7 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-04 07:56:49 - 2025-08-04 07:56:49 2460891.8311227 - 2460891.8311227 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
510059 2025-08-04 07:56:49 2460891.8311227 20.7662 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-08-04 06:11:40 - 2025-08-18 08:51:08 2460891.7581019 - 2460905.8688426 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
510061 2025-08-18 08:51:08 2460905.8688426 19.0787 0.114215 ABMag g-ZTF P48_ZTF-Cam
510060 2025-08-16 05:34:38 2460903.7323843 19.3702 0.091335 ABMag g-ZTF P48_ZTF-Cam
513909 2025-08-16 05:34:38 2460903.7323843 19.3702 0.091335 20.6116 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
513908 2025-08-04 06:11:40 2460891.7581019 20.1811 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-08-13 10:49:14 - 2025-08-13 10:49:14 2460900.95086 - 2460900.95086 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508563 2025-08-13 10:49:14 2460900.95086 19.602 0.15 19.88 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 110 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-08-12 12:08:30 - 2025-08-12 12:08:30 2460900.0059 - 2460900.0059 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508562 2025-08-12 12:08:30 2460900.0059 19.21 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 Robot [Last non detection]
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
268462 2025-08-29 18:18:38 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 20:16:27.732 +10:19:51.13 2025-08-16 05:34:38.004 19.3702 g-ZTF PSN ZTF25abjpgmo ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abjpgmo N
266494 2025-08-18 09:43:15 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 20:16:27.735 +10:19:51.17 2025-08-16 05:34:38.003 19.3702 g-ZTF PSN ZTF25abjpgmo ZTF N
265818 2025-08-14 13:42:33 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 20:16:27.707 +10:19:51.23 2025-08-13 22:25:21.792 19.24 L-GOTO Other GOTO25ftx GOTO N
265711 2025-08-13 17:30:56 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 20:16:27.731 +10:19:50.49 2025-08-13 10:49:14.304 19.602 orange-ATLAS PSN ATLAS25jiz ATLAS 2025TNSTR3176....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21919 2025-08-30 10:14:21 Tom Killestein I. Worssam, M. Pursiainen, J. Lyman, D. O'Neill, T. Killestein, K. Ackley, M. Dyer, 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, A. Kumar on behalf of GOTO collaboration GOTO SN Ia 0.06 1 GOTO Best matches obtained with templates of normal SNe Ia around 1 week post-peak. Redshift estimated from template matching, and concordant with photo-z of host galaxy. 2025TNSCR3462....1W
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
21919 2025-08-30 02:18:52 NOT / ALFOSC 1200 I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025ttp_2025-08-30_02-18-52.439_NOT_ALFOSC_GOTO.dat Object

Comments

TNS
System

Fri, 08/29/2025 - 18:18

Object coordinates updated

Object coordinates updated according to AT-report 268462 of Group ZTF
Previous RA, DEC: 20:16:27.735, +10:19:51.17 (304.1155616, +10.3308794)
Updated RA, DEC: 20:16:27.732, +10:19:51.13 (304.1155495, +10.3308700375)

TNS
System

Mon, 08/18/2025 - 09:43

Object coordinates updated

Object coordinates updated according to AT-report 266494 of Group ZTF
Previous RA, DEC: 20:16:27.731, +10:19:50.49 (304.1155475, +10.3306925)
Updated RA, DEC: 20:16:27.735, +10:19:51.17 (304.1155616, +10.3308794)