BHTOM Targets for 02 June, 2025

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Jun 2, 2025, 4:09:17 AMJun 2
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Hello,

Greetings from the BHTOM Automated Newsletter!

As of 2025-06-02 08:07:53.447164+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
ASASSN-25bv 134.564850 -43.165320 12.7 88.0 Unknown bright star with large dimmings from ASASSN
1RXS_J173546.9-302859 263.946400 -30.482900 16.0 165.0 Unknown Possible X-ray transient from SVOM
4FGL J1603.8-4903 240.966507 -49.061699 19.0 152.0 Unknown Astro-COLIBRI target
OGLE-BLG182.1.162852 269.764750 -30.818333 19.3 160.0 Variable star-other repeating dimming target from OGLE
AT2025mlr 350.614371 -38.951064 99.0 96.0 Unknown Potential SN from the TNS ~17th mag
AT2025lzw 201.983075 34.377786 99.0 107.0 Unknown Candidate microlensing event from Chinese PSP (Popular Supernova Project), PSP25J.
AT2025mau 276.599034 10.235546 99.0 138.0 Microlensing Event Candidate long microlensing event from Chinese KATS survey, KATS25K015.

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 9.2 131.0 Nova recurent nova predicted to explode 2024/2025
4U2206+54 331.984320 54.518447 10.9 77.0 XRB Be X-ray binary
AM_Her 274.055228 49.867989 12.9 105.0 CV Target for joint optical-radio observations
SAXJ2103.5+4545 315.898792 45.751547 13.6 90.0 XRB Be X-ray binary
BL_Lac 330.680381 42.277772 13.6 82.0 BL Lac famous variable blazar
KS1947+300 297.397850 30.208827 14.4 111.0 XRB Be X-ray binary
IGRJ21343+4738 323.584883 47.633391 14.4 84.0 XRB Be X-ray binary
GROJ2058+42 314.698071 41.776995 14.6 93.0 XRB Be X-ray binary
Mrk 841 226.004963 10.437732 14.6 140.0 AGN changinglook AGN
Gaia21fji 315.992250 50.244500 14.7 87.0 YSO 'Optical monitoring of Gaia- and ZTF-alerted candidate eruptive YSOs'
Gaia18bwz 174.611270 3.368310 15.2 102.0 CV Known dwarf nova QZ Vir in outburst
NGC5683-Seyfert 218.718578 48.661870 15.2 104.0 AGN active nucleus of a nearby galaxy for frequent monitoring
ZTF18aarippg 217.566838 23.062372 15.4 125.0 QSO Tick-Tok possibly merging Super Massive Black Hole binary
Gaia24dfv 303.845375 36.512631 15.5 102.0 Unknown Potential microlensing event
Gaia23cqg 223.613020 51.409360 15.8 103.0 BL Lac known BL Lac brightens by 2 mag in 45 months
ZTF18abdciiz 281.649375 0.922556 15.9 141.0 Unknown YSO candidate
SN2024afyu 258.429383 7.625256 16.3 149.0 SN Interesting long-term Supernova
SN2025fvw 233.857429 12.057722 16.3 142.0 SN SN Ia, bright nearby supernova
Gaia24cjg 303.691375 69.701611 17.0 81.0 YSO Possibly new young eruptive star
AT2025kej 273.783879 41.364883 17.4 113.0 Unknown potential supernova found by EAST team via TNS
AT2021aeuk 243.249342 42.327847 17.6 115.0 Unknown Weird repeating flaring in a z 0.233663 quasar or galaxy
AT2021gqu 190.002519 1.156860 17.9 117.0 Unknown Transient showing possible re-brightening. Possibly nuclear, matches AGN. Host redshift 0.08


South (dec<0):

name ra dec mag_last sun_separation classification description
Gaia24ccy 243.402110 -25.063310 13.6 173.0 YSO known YSO brightens by 2 mag
Gaia19dbf 178.699417 -64.491850 14.2 118.0 Unknown Possibly a YSO
IRAS 23226-3843 351.350833 -38.446978 14.3 95.0 AGN changinglook AGN
AT2025jyk 335.216667 -48.373250 15.4 109.0 Unknown Possible Supernova from TNS ~17th mag
AT2025hkm 194.543632 -10.157840 15.6 126.0 Unknown Nuclear transient in a possibly active galaxy
AT2025ggm 348.240196 -58.128444 15.8 105.0 Unknown transient found by ATLAS
Gaia24amo 249.148921 -53.749919 16.1 148.0 Microlensing Event candidate microlensing event, with the second peak
2025fep 260.034283 -60.156694 16.2 141.0 Unknown Possible nuclear transient in nearby galaxy ESO 138- G 021
PMNJ0730-6602 112.706495 -66.038578 16.4 94.0 AGN IAUZ Target
Gaia24dgn 264.019000 -51.888140 16.4 148.0 Unknown microlensing candidate
AT2024aegq 84.200821 -57.355289 16.6 80.0 TDE featurless TDE, ePESSTO+ target
Gaia24cek 268.863010 -35.341330 16.6 159.0 Unknown bright long candidate microlensing event near bulge
Gaia23bsf 276.583080 -14.036970 16.6 154.0 Unknown Star getting brighter very slowly
Gaia24csq 286.710270 -26.939590 16.6 146.0 Unknown potential slowly rising microlensing event
AT2025kku 40.265125 -58.890725 16.7 85.0 Unknown Possible SN on the rise ~17th mag
Gaia23bzg 195.332390 -14.415280 16.8 128.0 QSO Brightening in known QSO
V1725 Sco 256.693920 -35.468560 17.0 165.0 Nova Astro-COLIBRI target
SN 2024ggi 169.592047 -32.837582 17.5 109.0 SN Astro-COLIBRI target, Supernova, still visible
Gaia24ctf 282.353540 -12.876540 17.6 148.0 Unknown microlensing candidate
SN 2025gjc 234.742202 -22.669828 17.8 166.0 SN Astro-COLIBRI target
Gaia24csl 279.775890 -21.742460 17.9 152.0 Unknown probable microlensing event near Bulge


Last week's total of images processed: 7021 (6885 with success).


Last week's targets observed:

camera target_names
AZT-8_PL-4710 IGR J01363+6610
Adonis_G2-1600 Gaia24azi, TCrB, Gaia24azc, Gaia24dfv, AM_Her, RZ_LMi, Gaia24ayd, TabbysStar
Adyu60_Andor-934 AT2025hkm, SN2025fvw, Mrk 841, SN2024afyu, NGC5683-Seyfert, TCrB, GaiaBH1, Gaia23cqg, RZ_LMi, Gaia18bwz, SN2024adxu, SDSS_J154329.47+335908.6, ZTF18aarippg, Gaia24ccy
EEye_QHY268M Gaia24ctf, Gaia23cnm, Gaia24aup, AT2024kwu, Gaia24csq, AT2025hfm, Gaia24csm
Flarestar-MPC171_G2-1600 TCrB
LW_Seestar-S50 SN2024afyu, AT2025kej, Gaia24dfv
OAUJ-CDK500_F42 Gaia23cpd, SN2024afyu, NGC5683-Seyfert, SN2025bof, 8C0716_714, Gaia18bwz, SN2024gy, Gaia24azc, Gaia24ayd
PIRATE_FLI Gaia24drh, AT2024wpc, SN2024aduf, Gaia24cuc, Gaia24and, Gaia25adm, Gaia24cni, Gaia24beh, Gaia24bjy
PIWNICE90_C4-16000EC LS I +61 302, Gaia24bux, Mrk 841, Gaia24djk, TCrB, ASASSN-24fw, SN2025bof, 8C0716_714, Gaia21fji, AT2024kwu, Gaia24cjg, Gaia22efa, ZTF18aarippg, Gaia24dja
PROMPT5_Apogee Gaia25aag, Gaia25aao, ASASSN-24fw
PROMPT6_FLI SN2025fvw, ASASSN-24fw
ROAD_QHY600M TCrB, ASASSN-24fw, ASASSN-21qj, 2025eve, ASASSN-21js, AT2025hfm
SOAB_ZWO-ASI2600MM SN2025fvw, Mrk 841, SN2024afyu, AT2025kej, SN2025bof, TCrB, Gaia21fji, AM_Her, Gaia22cav, ZTF18aarippg
SUHORA60_APOGEE Gaia24cjg, SN2025fvw, TCrB
SUTO-Otivar_ASI1600MM TCrB
ZAO_G2-1600 SN2024afyu

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

observatory-user count
Agnieszka Gurgul (PIWNICE90_C4-16000EC) 4465
Franz-Josef Hambsch (ROAD_QHY600M) 1150
Mykhailo Solomakha (AZT-8_PL-4710) 237
Waldemar Ogloza (Adyu60_Andor-934) 235
Michal Siwak (SUHORA60_APOGEE) 199
Nazlı Karaman (Adyu60_Andor-934) 158
Sebastian Kurowski (OAUJ-CDK500_F42) 128
Sebastian Kurowski (SOAB_ZWO-ASI2600MM) 69
Charles Galdies (ZAO_G2-1600) 57
Sjoerd Dufoer (EEye_QHY268M) 55
Stephen M. Brincat (Flarestar-MPC171_G2-1600) 49
Yauheni Stsefanenka (OAUJ-CDK500_F42) 43
Alicja Pucek (OAUJ-CDK500_F42) 32
Staszek Zola (PROMPT5_Apogee) 22
Staszek Zola (PROMPT6_FLI) 19
Franky Dubois (Adonis_G2-1600) 17
Jacek Drazkowski (LW_Seestar-S50) 15
Lukasz Wyrzykowski (LW_Seestar-S50) 10
Tatiana Willson (PIRATE_FLI) 6
Ava Carroll (PIRATE_FLI) 6
Nelson Afonso (PIRATE_FLI) 6
Jenna Blackwell (PIRATE_FLI) 5
Adam Popowicz (SUTO-Otivar_ASI1600MM) 5
Anna Maskolenko (PIRATE_FLI) 4
Gavin Thrippleton-Firth (PIRATE_FLI) 4
Kaeley Pimm (PIRATE_FLI) 3
Chung Him See (PIRATE_FLI) 3
Julian Gauld (PIRATE_FLI) 3
Keith Lancaster-Wilson (PIRATE_FLI) 3
Robert Hrabi (PIRATE_FLI) 3
Gerard Hamill (PIRATE_FLI) 3
Alex Capildeo (PIRATE_FLI) 3
Peter Hill (PIRATE_FLI) 3


Top 5 data uploaders!
name count
Agnieszka Gurgul 4465
Franz-Josef Hambsch 1150
Mykhailo Solomakha 237
Waldemar Ogloza 235
Michal Siwak 199


Clear skies!
Your BHTOM Team
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