2026lxf | Transient Name Server

RA/DEC (2000)

15:03:05.190 +22:02:04.10

225.771625 +22.034472

Type

Redshift

Discovery Report Classification Report

Related AstroNotes: 2026-134

Reporting Group

None

Discovering Data Source

None

Discovery Date

2026-05-08 07:49:26.400

TNS AT

Public

Discovery Mag

13.9

Filter

Clear-

Reporter/s

Kirill Sokolovsky, Katie Barnhart, Darien Perla, Vallia Antoniou, Elias Aydi (Texas Tech University)

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

Other_Other_Clear

Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)

Spectra

Select	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
	23682	2026-05-09 22:45:07	Galileo / BC-Asi	1200	D. Carli, P. Ochner	P. Ochner	Padova-Asiago	tns_2026lxf_2026-05-09.948_Galileo_BC-Asi_Padova-Asiago.txt		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

Clear-

Other_Other

2026-05-07 10:55:12 - 2026-05-08 07:49:26

2461167.955 - 2461168.826

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
580954	2026-05-08 07:49:26	2461168.826	13.9			VegaMag	Clear-	Other_Other			Dwarf nova candidate found with the NMW-TexasTech survey using two identical 135mm telephoto lenses + unfiltered QHY600M CMOS cameras. The transient was first detected on 2026-05-08.3260 UTC at CV=13.95 with one camera and confirmed in images taken with the second camera 78 minutes later on 2026-05-08.3803 at CV=14.01. The magnitude difference is not significant given the expected photometric uncertainty of 0.06 mag. The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551. A blue Pan-STARRS 1 DR2 source PS1 134442257714871804 (g=21.38 +/-0.04, r=21.50 +/-0.05) is located at 15:03:05.16 +22:02:03.6 J2000, just 0.6" from the measured position of the transient (NMW-TexasTech image scale is 5.9"/pix). The plate-solved FITS images, finder charts and animations produced from the NMW-TexasTech images are available at https://tau.kirx.net/img/TCPJ15030519+2202041/ The NMW-TexasTech survey operates at TTU Preston Gott Skyview Observatory (Shallowater, Texas).
580953	2026-05-07 10:55:12	2461167.955			15	VegaMag	Clear-	Other_Other			[Last non detection] The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551.

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
302961	2026-05-10 14:11:35	Claudio Balcon	Kirill Sokolovsky, Katie Barnhart, Darien Perla et al.			15:03:05.190	+22:02:04.10	2026-05-08 07:49:26.400	13.9	Clear-		PNV					Dwarf nova candidate found with the NMW-TexasTech survey using two identical 135mm telephoto lenses + unfiltered QHY600M CMOS cameras. The transient was first detected on 2026-05-08.3260 UTC at CV=13.95 with one camera and confirmed in images taken with the second camera 78 minutes later on 2026-05-08.3803 at CV=14.01. The magnitude difference is not significant given the expected photometric uncertainty of 0.06 mag. The object was not detected above the magnitude limit of CV~15 on the images taken the previous night on 2026-05-07.4551. A blue Pan-STARRS 1 DR2 source PS1 134442257714871804 (g=21.38 +/-0.04, r=21.50 +/-0.05) is located at 15:03:05.16 +22:02:03.6 J2000, just 0.6" from the measured position of the transient (NMW-TexasTech image scale is 5.9"/pix). The plate-solved FITS images, finder charts and animations produced from the NMW-TexasTech images are available at https://tau.kirx.net/img/TCPJ15030519+2202041/ The NMW-TexasTech survey operates at TTU Preston Gott Skyview Observatory (Shallowater, Texas).	2026TNSTR2027....1S	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23679

2026-05-10 16:40:09

Andrea Reguitti

Vittorio Andreoli (UniTn), Deborah Carli (UniPd), Andrea Farina (UniPd), Paolo Ochner (UniPd), Claudio Balcon (ISSP), Andrea Reguitti (INAF-OAPd)

Padova-Asiago

A low-resolution spectrum was obtained with the 1.22-m Galilei telescope and B&C spectrograph (dispersion 2.25 Å/pixel) located in Asiago (Italy) on 2026-05-9.948 UT. The spectrum shows a blue continuum without Balmer lines, instead there are He I emissions 706.5 and 667.8 nm and He I absorption at 587.6; 447.1; 438.8; 414.4; 402.6; 381.9; 370.5 and 363.4 nm. A possible progenitor was found in GAIA DR3 database (Gaia collaboration et al. 2023) DR3 1261910766509656448 with an estimated g-mag 21.2 ± 0.1 that means Δmag ≈ 7.3.These characteristics are consistent with a Helium-rich cataclysmic variable. We propose to classify this target as a Helium-rich dwarf nova.

2026TNSCR2036....1A

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
23682	2026-05-09 22:45:07	Galileo / BC-Asi	1200	D. Carli, P. Ochner	P. Ochner	Padova-Asiago	tns_2026lxf_2026-05-09.948_Galileo_BC-Asi_Padova-Asiago.txt		Object

AT 2026lxf

Spectra

Light curves

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