BHTOM Targets for 14 April, 2025

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Apr 14, 2025, 8:20:51 AMApr 14

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Hello,

Greetings from the BHTOM Automated Newsletter!

As of 2025-04-14 12:20:37.552566+00:00, these are the new targets added in the last week for observing (importance>=1), sorted by magnitude:

name	ra	dec	mag_last	sun_separation	classification	description
AT2025hfm	270.905542	-29.590722	14.0	113.0	Microlensing Event	bright transient found by amateur T.Kojima from Japan - Microlensing event
AT2025hbw	143.003450	46.104250	19.3	103.0	Unknown	TDE candidate
Gaia21bty	261.309125	-37.137269	20.0	120.0	YSO	FUor/EXor. It is really faint in optical bands, but you can try to catch it if you have 1-2m telescope. Infrared data are very welcomed !

In addition, here are some older targets that are currently visible and requested for observations. These targets have an importance>=4, a sun separation>70, and last magnitude<18, sorted by magnitude.

North (dec>0):

name	ra	dec	mag_last	sun_separation	classification	description
TCrB	239.875676	25.920170	9.3	129.0	Nova	recurent nova predicted to explode 2024/2025
AM_Her	274.055228	49.867989	13.0	94.0	CV	Target for joint optical-radio observations
8C0716_714	110.472701	71.343434	13.8	81.0	QSO	high cadence variability suspected
KS1947+300	297.397850	30.208827	14.0	81.0	XRB	Be X-ray binary
SN2024afyu	258.429383	7.625256	14.1	122.0	SN	Possible long-term SN II at its peak
Mrk 841	226.004963	10.437732	14.4	149.0	AGN	changinglook AGN
Gaia24dfv	303.845375	36.512631	14.7	75.0	Unknown	Potential microlensing event
Gaia18bwz	174.611270	3.368310	15.2	150.0	CV	Known dwarf nova QZ Vir in outburst
ZTF18abdciiz	281.649375	0.922556	15.2	100.0	Unknown	YSO candidate
NGC5683-Seyfert	218.718578	48.661870	15.5	120.0	AGN	active nucleus of a nearby galaxy for frequent monitoring
ZTF18aarippg	217.566838	23.062372	15.5	144.0	QSO	Tick-Tok possibly merging Super Massive Black Hole binary
2025eve	138.673796	15.702344	16.1	112.0	TDE	Classified as TDE
Gaia24dov	296.333280	36.374570	16.3	81.0	Unknown	~0.8 mag rise in Gaia source
AR UMa	168.935790	42.972890	16.5	119.0	CV	CV currently in long outburst, observe densely
AT2024yqo	122.802017	20.380400	16.5	96.0	Unknown	TDE, brightening again?
AT2024kwu	102.933583	44.352167	16.5	77.0	Microlensing Event	Candidate long microlensing event from Chinese KATS survey, KATS24H008.
ASASSN-24fw	106.329000	6.205306	16.5	83.0	Star	A MS star + IR excess that experienced a 2.5mag deep flux decrease (ATLAS/ASASSN). Needs BVRI (ZYJHK if available) monitoring for relative brightness in egress please
SN2025bof	299.147242	50.239614	16.9	78.0	SN	Possible SNIa in nearby galaxy
AT2025ghv	101.483125	12.182694	17.0	78.0	Unknown	Faint TNS transient found by XOSS
Gaia24bmk	292.814710	22.860110	17.6	86.0	Unknown	slowly rising object possible microlensing
AT2025fma	310.362542	63.140139	17.7	74.0	Unknown	Bright hostless transient from XOSS survey
Gaia24cjg	303.691375	69.701611	17.7	77.0	YSO	Possibly new young eruptive star
SDSSJ094533.99+100950.1	146.391622	10.163917	17.9	121.0	QSO	Long term variable quasar for monitoring

South (dec<0):

name	ra	dec	mag_last	sun_separation	classification	description
Gaia24ccj	260.245940	-43.419650	11.1	120.0	Unknown	bright blue gal.plane source candidate microlensing event or Be-type outburst rises by 0.2 mag
TCP J18022164-3310319	270.590167	-33.175528	11.2	113.0	Unknown	Astro-COLIBRI target, possibile very bright YSO or CV
MXB0656-072	104.572033	-7.209779	11.3	84.0	XRB	Be X-ray binary
Gaia24ccy	243.402110	-25.063310	13.3	138.0	YSO	known YSO brightens by 2 mag
Gaia19dbf	178.699417	-64.491850	13.9	122.0	Unknown	Possibly a YSO
AT2025ggn	75.904408	-69.402450	14.6	87.0	Unknown	Transient found by ASASSN in LMC
Gaia23bsf	276.583080	-14.036970	15.3	107.0	Unknown	Star getting brighter very slowly
AT2025ggm	348.240196	-58.128444	15.3	73.0	Unknown	transient found by ATLAS
2025fep	260.034283	-60.156694	15.3	114.0	Unknown	Possible nuclear transient in nearby galaxy ESO 138- G 021
SN 2025efc	143.681425	-21.931062	15.5	122.0	SN	Astro-COLIBRI target, bright supernova
Gaia24csm	275.550660	-19.679440	15.6	109.0	Unknown	gal.plane source candidate microlensing event rises by 2.3 mag
Gaia24dgn	264.019000	-51.888140	15.8	115.0	Unknown	microlensing candidate
V1725 Sco	256.693920	-35.468560	15.9	124.0	Nova	Astro-COLIBRI target
Gaia24amo	249.148921	-53.749919	16.0	122.0	Microlensing Event	candidate microlensing event, possibly going for second rise!
SN2024adxu	220.272308	-17.477025	16.1	161.0	SN	Nearby Supernova Type II
PMNJ0730-6602	112.706495	-66.038578	16.5	99.0	AGN	IAUZ Target
CTS_C30.10	71.833281	-45.627319	16.6	71.0	QSO	Long term variable quasar for monitoring
AT2024aegq	84.200821	-57.355289	16.6	83.0	TDE	featurless TDE, ePESSTO+ target
Gaia24cek	268.863010	-35.341330	16.7	115.0	Unknown	bright long candidate microlensing event near bulge
Gaia24ctf	282.353540	-12.876540	16.7	102.0	Unknown	microlensing candidate
Gaia23bzg	195.332390	-14.415280	16.8	171.0	QSO	Brightening in known QSO
Gaia24csq	286.710270	-26.939590	16.9	99.0	Unknown	potential slowly rising microlensing event
SN 2024ggi	169.592047	-32.837582	16.9	142.0	SN	Astro-COLIBRI target, Supernova, still visible
AT2024ablg	86.040737	-51.411406	16.9	82.0	Unknown	Bright candidate for TDE
Gaia25aao	172.538810	-13.748780	17.2	150.0	SN	Confirmed SN Ia
Gaia23cnm	285.322920	-18.717130	17.3	100.0	Unknown	slow and long rise, possible microlensing or YSO
Gaia24cby	246.928600	-42.522380	17.4	129.0	Unknown	red target gets brighter, candidate microlensing event near bulge
TDE2025bri	212.668492	-10.799167	17.5	170.0	TDE	TDE-He candidate
SN 2025gjc	234.742202	-22.669828	17.5	146.0	SN	Astro-COLIBRI target
Gaia24csl	279.775890	-21.742460	17.9	105.0	Unknown	probable microlensing event near Bulge

Last week's total of images processed: 798 (762 with success).

Last week's targets observed:

camera	target_names
Adonis_G2-1600	Gaia24dja, TCrB, RZ_LMi
EEye_QHY268M	Gaia24bmk, AT2024kwu, Gaia23cnm, Gaia24ctf, Gaia24cvd, Gaia24csm, Gaia24dja, Gaia24csq, Gaia24aup
Flarestar-MPC171_G2-1600	TCrB
GoChile-GoT1_ASI6200	2025eve, TCrB, 2025fep, SN 2025efc, SN2024afav, SN2024adxu, SN2024afyu, TDE2025bri, AT2024yqo, AT2025ggm, AT2025gcz, Gaia25aao, AT2025ahn, SN 2024ggi, SN 2025gjc
MOLETAI-80cm_SOPHIA-4096B	Gaia18bwz
OAUJ-CDK500_F42	AT2024kwu, ASASSN-24fw, SN2024afyu, LS I +61 302, Gaia24azc, Gaia18bwz
PROMPT-MO-1_Apogee	Gaia22alz
PROMPT5_Apogee	Gaia25aao, ASASSN-24fw
Planetarium_Slaskie_Kepler4040	Gaia24big, TCrB, TT Ori, AT2025ghv, OY Mon, Gaia24ala, 8C0716_714
SOAB_ZWO-ASI2600MM	2025eve, AT2024kwu, TCrB, AT2025fma, AM_Her, Gaia21fji, AT2025ghv, SN2024afyu, AT2025aox, LS I +61 302, SDSS_J154329.47+335908.6, SN2025bof, Gaia22cav, 8C0716_714, Gaia24dfc

Last week's fits uploads score (sorted by count)

observatory-user	count
Mateusz Bronikowski (GoChile-GoT1_ASI6200)	296
Staszek Zola (OAUJ-CDK500_F42)	160
Waldemar Ogloza (Planetarium_Slaskie_Kepler4040)	112
Sebastian Kurowski (SOAB_ZWO-ASI2600MM)	108
Franky Dubois (Adonis_G2-1600)	40
Sjoerd Dufoer (EEye_QHY268M)	26
Staszek Zola (PROMPT5_Apogee)	21
Staszek Zola (PROMPT-MO-1_Apogee)	12
Yauheni Stsefanenka (OAUJ-CDK500_F42)	8
Alicja Pucek (OAUJ-CDK500_F42)	8
Stephen M. Brincat (Flarestar-MPC171_G2-1600)	6
Jaunius Bruzas (MOLETAI-80cm_SOPHIA-4096B)	1

Top 5 data uploaders!

name	count
Mateusz Bronikowski	296
Staszek Zola	193
Waldemar Ogloza	112
Sebastian Kurowski	108
Franky Dubois	40