RA/DEC (2000)
07:30:08.510 +24:30:05.09
112.535458 +24.501414
Type
---
Redshift
Discovery Report
Related AstroNotes: 2026-86
Reporting Group
None
Discovering Data Source
None
Discovery Date
2026-01-30 09:42:58.000
TNS AT
Y
Public
Y
Host Name
NGC2398
Discovery Mag
15.8
Filter
Clear-
Reporter/s
Masaki Tsuboi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌Other_Other_V
 ▌Other_Other_Clear
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
No Data
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2026-01-27 22:11:26 - 2026-01-28 21:33:08 2461068.424613 - 2461069.398009 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556364 2026-01-28 21:33:08 2461069.398009 14.91 0.01 ABMag L-GOTO GOTO-N_GOTO-2 180
556363 2026-01-27 22:11:26 2461068.424613 19.4 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-01-26 09:36:59 - 2026-01-29 05:08:13 2461066.9006829 - 2461069.7140394 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556066 2026-01-29 05:08:13 2461069.7140394 15.218 0.089 ABMag r-ZTF P48_ZTF-Cam 30 ZTFbot
556065 2026-01-26 09:36:59 2461066.9006829 17.693 ABMag r-ZTF P48_ZTF-Cam 30 ZTFbot [Last non detection]
V-Johnson Other_Other 2026-02-07 11:37:38 - 2026-02-07 11:37:38 2461078.9844676 - 2461078.9844676 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556351 2026-02-07 11:37:38 2461078.9844676 16.81 VegaMag V-Johnson Other_Other 0.30-m reflector + V filter CMOS
Clear- Other_Other 2026-01-17 11:41:30 - 2026-01-30 09:42:58 2461057.9871528 - 2461070.904838 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556052 2026-01-30 09:42:58 2461070.904838 15.8 17 VegaMag Clear- Other_Other Telescope:0.35-m f/4.6 reflector
556051 2026-01-17 11:41:30 2461057.9871528 17.8 VegaMag Clear- Other_Other [Last non detection] Telescope:0.35-m f/4.6 reflector
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
290207 2026-02-07 19:21:47 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 07:30:08.508 +24:30:05.17 2026-01-28 21:33:08.064 14.91 L-GOTO Other GOTO26all GOTO N
290202 2026-02-07 17:23:38 Katsumi Yoshimoto Katsumi Yoshimoto 07:30:08.500 +24:30:05.10 2026-02-07 11:37:38.000 16.81 V-Johnson PNV Follow-up observation photometry B=17.21, V=16.81, R=17.31 using 0.30-m reflector + CMOS, Bessel BVR filter. N
290076 2026-02-06 11:42:31 Ismael Perez-Fournon I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia et al. SGLF ZTF 07:30:08.510 +24:30:05.09 2026-01-29 05:08:13.000 15.218 r-ZTF PNV ZTF26aaedxli ZTF This transient has been proposed as an LFBOT in NGC 2398 (ATels 17646, 17647, and 17648). However, it is likely associated with the Gaia star 866940901044573184. ZTF light curve available at the LSST/ZTF brokers, e.g.: https://lasair-ztf.lsst.ac.uk/objects/ZTF26aaedxli/ https://alerce.online/object/ZTF26aaedxli https://antares.noirlab.edu/loci/ANT2026fx7ymay9nowq https://ztf.fink-portal.org/ZTF26aaedxli N
290067 2026-02-06 04:10:17 Masaki Tsuboi Masaki Tsuboi 07:30:08.540 +24:30:05.70 2026-01-30 09:42:58.000 15.8 Clear- 1 PSN NGC2398 Offsets:104.7Wand50.5NofNGC2398 2026TNSTR.500....1T N
Related files
File Comments Last Modified (UT) Modified By
tns_2026cex_atrep_290067.jpg discovery image 2026-01-30 09:42:58(UT) 2026-02-06 04:10:19 Masaki Tsuboi
No Data

Comments

Masaki
Tsuboi

Tue, 02/24/2026 - 09:03

Follow-up observations

20260206.43717 10:29:31UT
V=16.9

20260209.42775 10:15:58UT
V=16.9

20260212.41847 10:02:36UT
V=17.3

20260213.43582 10:27:35UT
V=17.1

20260215.41900 10:03:22UT
V=17.5

20260216.60339 14:28:53UT
V=17.7

20260217.42534 10:12:30UT
V=17.5

20260218.60438 14:30:18UT
V=17.6

20260219.42619 10:13:43UT
V=17.5

20260220.42394 10:10:28UT
V=17.7

20260221.42378 10:10:14UT
V=18.0

20260222.49070 11:46:37UT
V=18.4

20260223.63995 15:21:31UT
V=19.3

Instrument
Telescope：0.35-m f/4.6 reflector
camera：SBIG ST-2000XM Filter Clear

Yasuo
Sano

Mon, 02/09/2026 - 08:51

Follow up observation

2026 02 08.6022(UT)  16.78B
2026 02 08.6030(UT)  17.04V
2026 02 08.6038(UT)  16.76 R
SCT0.36m F/11 B,V,Rc filter, CCD FLI ML1001E 

Hidenori
Nohara

Sat, 02/07/2026 - 06:03

Follow up observation

KC2026 02 06.56760UT  16.0 B
KC2026 02 06.56648UT  16.7 G
KC2026 02 06.54523UT  17.1 R
KC2026 02 06.58215UT  17.0 V 
0.4-m F/3.8 Astrograph(AG16) with Baader planetarium LRGB filter set(Excluding L filter, L is replaced Clear filter, not standard filters) 
CCD camera is Moravian Instruments  G4-16000(Kodak KAF16030 CCD).

Masaki
Tsuboi

Fri, 02/06/2026 - 14:23

Follow-up observations

20260206.43717 10:29:31UT
V=16.9

TNS
System

Fri, 02/06/2026 - 11:42

Object coordinates updated

Object coordinates updated according to AT-report 290076 of Group ZTF
Previous RA, DEC: 07:30:08.540, +24:30:05.70 (112.535583, +24.501583)
Updated RA, DEC: 07:30:08.510, +24:30:05.09 (112.535458, +24.501414)

Masaki
Tsuboi

Fri, 02/06/2026 - 04:58

Follow-up observations

20260202.42725 10:15:14UT
V=16.0

20260203.42273 10:08:44UT
V=16.1

20260204.47810 11:28:27UT
V=16.4

20260205.41604 9:59:05UT
V=16.5

Instrument
Telescope：0.35-m f/4.6 reflector
camera：SBIG ST-2000XM Filter Clear