BHTOM Targets for 21 April, 2025
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wyrz...@gmail.com
Apr 21, 2025, 8:36:28 AM4/21/25
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Hello,
Top 5 data uploaders!
Clear skies!
Your BHTOM Team
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Greetings from the BHTOM Automated Newsletter!
As of 2025-04-21 12:35:55.926299+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 |
|---|---|---|---|---|---|---|
| AT2023aece | 238.433929 | -14.738814 | 18.3 | 151.0 | AGN | nuclear transient with an extremely long lived, rising lightcurve. |
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.
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| TCrB | 239.875676 | 25.920170 | 7.3 | 132.0 | Nova | recurent nova predicted to explode 2024/2025 |
| AM_Her | 274.055228 | 49.867989 | 13.4 | 96.0 | CV | Target for joint optical-radio observations |
| 8C0716_714 | 110.472701 | 71.343434 | 13.9 | 76.0 | QSO | high cadence variability suspected |
| KS1947+300 | 297.397850 | 30.208827 | 13.9 | 85.0 | XRB | Be X-ray binary |
| Gaia24dfv | 303.845375 | 36.512631 | 14.6 | 79.0 | Unknown | Potential microlensing event |
| Mrk 841 | 226.004963 | 10.437732 | 14.7 | 152.0 | AGN | changinglook AGN |
| SN2024afyu | 258.429383 | 7.625256 | 15.3 | 127.0 | SN | Possible long-term SN II at its peak |
| Gaia18bwz | 174.611270 | 3.368310 | 15.4 | 143.0 | CV | Known dwarf nova QZ Vir in outburst |
| ZTF18aarippg | 217.566838 | 23.062372 | 15.6 | 144.0 | QSO | Tick-Tok possibly merging Super Massive Black Hole binary |
| ZTF18abdciiz | 281.649375 | 0.922556 | 15.7 | 107.0 | Unknown | YSO candidate |
| NGC5683-Seyfert | 218.718578 | 48.661870 | 15.8 | 119.0 | AGN | active nucleus of a nearby galaxy for frequent monitoring |
| AT2024yqo | 122.802017 | 20.380400 | 16.2 | 90.0 | Unknown | TDE, brightening again? |
| 2025eve | 138.673796 | 15.702344 | 16.3 | 105.0 | TDE | Classified as TDE |
| ASASSN-24fw | 106.329000 | 6.205306 | 16.5 | 77.0 | 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 |
| 4FGL J1426.1+3403 | 216.539001 | 34.063000 | 16.8 | 134.0 | Unknown | Astro-COLIBRI target |
| AR UMa | 168.935790 | 42.972890 | 17.1 | 114.0 | CV | CV currently in long outburst, observe densely |
| Gaia22aai | 312.653990 | 44.361310 | 17.2 | 72.0 | YSO | large amplitude variability in a known T Tau star |
| AT2025ghv | 101.483125 | 12.182694 | 17.3 | 71.0 | Unknown | Faint TNS transient found by XOSS |
| SDSSJ094533.99+100950.1 | 146.391622 | 10.163917 | 17.7 | 114.0 | QSO | Long term variable quasar for monitoring |
| AT2021aeuk | 243.249342 | 42.327847 | 17.8 | 117.0 | Unknown | Weird repeating flaring in a z 0.233663 quasar or galaxy |
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| MXB0656-072 | 104.572033 | -7.209779 | 11.1 | 78.0 | XRB | Be X-ray binary |
| TCP J18022164-3310319 | 270.590167 | -33.175528 | 11.2 | 120.0 | Unknown | Astro-COLIBRI target, possibile very bright YSO or CV |
| Gaia24ccy | 243.402110 | -25.063310 | 13.3 | 145.0 | YSO | known YSO brightens by 2 mag |
| Gaia19dbf | 178.699417 | -64.491850 | 13.9 | 123.0 | Unknown | Possibly a YSO |
| AT2025hfm | 270.905542 | -29.590722 | 14.0 | 120.0 | Microlensing Event | bright transient found by amateur T.Kojima from Japan - Microlensing event |
| AT2025ggn | 75.904408 | -69.402450 | 15.0 | 88.0 | Unknown | Transient found by ASASSN in LMC |
| Gaia24cro | 274.070700 | -20.931500 | 15.1 | 117.0 | Unknown | candidate microlensing event |
| Gaia23bsf | 276.583080 | -14.036970 | 15.2 | 114.0 | Unknown | Star getting brighter very slowly |
| 2025fep | 260.034283 | -60.156694 | 15.2 | 119.0 | Unknown | Possible nuclear transient in nearby galaxy ESO 138- G 021 |
| Gaia24csm | 275.550660 | -19.679440 | 15.6 | 116.0 | Unknown | gal.plane source candidate microlensing event rises by 2.3 mag |
| AT2025ggm | 348.240196 | -58.128444 | 15.6 | 77.0 | Unknown | transient found by ATLAS |
| SN2024adxu | 220.272308 | -17.477025 | 15.6 | 168.0 | SN | Nearby Supernova Type II |
| Gaia24dgn | 264.019000 | -51.888140 | 15.7 | 120.0 | Unknown | microlensing candidate |
| SN 2025efc | 143.681425 | -21.931062 | 15.7 | 117.0 | SN | Astro-COLIBRI target, bright supernova |
| V1725 Sco | 256.693920 | -35.468560 | 16.0 | 131.0 | Nova | Astro-COLIBRI target |
| PMNJ0730-6602 | 112.706495 | -66.038578 | 16.5 | 98.0 | AGN | IAUZ Target |
| AT2024aegq | 84.200821 | -57.355289 | 16.5 | 83.0 | TDE | featurless TDE, ePESSTO+ target |
| Gaia24amo | 249.148921 | -53.749919 | 16.6 | 127.0 | Microlensing Event | candidate microlensing event, possibly going for second rise! |
| Gaia24cek | 268.863010 | -35.341330 | 16.7 | 121.0 | Unknown | bright long candidate microlensing event near bulge |
| Gaia23bzg | 195.332390 | -14.415280 | 16.8 | 167.0 | QSO | Brightening in known QSO |
| AT2024ablg | 86.040737 | -51.411406 | 16.9 | 80.0 | Unknown | Bright candidate for TDE |
| Gaia24ctf | 282.353540 | -12.876540 | 16.9 | 108.0 | Unknown | microlensing candidate |
| SN 2024ggi | 169.592047 | -32.837582 | 17.0 | 138.0 | SN | Astro-COLIBRI target, Supernova, still visible |
| Gaia24csq | 286.710270 | -26.939590 | 17.2 | 106.0 | Unknown | potential slowly rising microlensing event |
| Gaia23cnm | 285.322920 | -18.717130 | 17.3 | 106.0 | Unknown | slow and long rise, possible microlensing or YSO |
| TDE2025bri | 212.668492 | -10.799167 | 17.6 | 176.0 | TDE | TDE-He candidate |
| Gaia24cby | 246.928600 | -42.522380 | 17.8 | 135.0 | Unknown | red target gets brighter, candidate microlensing event near bulge |
| Gaia24csl | 279.775890 | -21.742460 | 17.9 | 112.0 | Unknown | probable microlensing event near Bulge |
| SN 2025gjc | 234.742202 | -22.669828 | 17.9 | 153.0 | SN | Astro-COLIBRI target |
Last week's total of images processed: 2576 (2409 with success).
Last week's targets observed:
| camera | target_names |
|---|---|
| Adonis_G2-1600 | Gaia24dja, Gaia24azi, TabbysStar, Gaia24dfv, RZ_LMi, Gaia24ayd, TCrB, Gaia24azc |
| GoChile-GoT1_ASI6200 | SN 2024ggi, SN2024afav, SN2024adxu, AT2025gcz, AT2024yqo, 2025eve, HE0413_4031, Gaia25aao, AT2025hfm, SN2024afyu, CTS_C30.10, HE0435-4312, SN 2025gjc, SN 2025efc, TCrB, 2025fep, AT2025ahn |
| Kryoneri-1.2_Andor-Zyla | NGC5683-Seyfert, AT2025ghv, T Ori, AT2024kwu, AT2024yqo, ASASSN-24fw, MXB0656-072, 2025eve, IGRJ06074+2205, Gaia18bwz, V416Ori, TT Ori, Gaia24ala, 8C0716_714, SN 2025efc, TCrB |
| LCOGT-CTIO-1m_4K | Gaia24amo |
| LCOGT-SS-1m_4K | V1725 Sco |
| LCOGT-Teide-1m_4K | Gaia24azi |
| OAUJ-CDK500_F42 | AT2024kwu, LS I +61 302, SN2025bof, 2025eve, Gaia18bwz, SN2024afyu, 8C0716_714 |
| PROMPT-MO-1_Apogee | Gaia20agb |
| PROMPT5_Apogee | ASASSN-24fw, Gaia25aao |
| ROAD_QHY600M | Gaia23cpd, OY Mon, Gaia19fct, Gaia23dnm, Gaia24ala, ASASSN-21qj, Gaia19eyy |
| ZAO_G2-1600 | ZTF18aarippg, SN2024afyu, TCrB, AT2024kwu |
Last week's fits uploads score (sorted by count)
| observatory-user | count |
|---|---|
| Franz-Josef Hambsch (ROAD_QHY600M) | 1836 |
| Mateusz Bronikowski (GoChile-GoT1_ASI6200) | 211 |
| Charles Galdies (ZAO_G2-1600) | 174 |
| Alexios Liakos (Kryoneri-1.2_Andor-Zyla) | 160 |
| Alicja Pucek (OAUJ-CDK500_F42) | 46 |
| Yauheni Stsefanenka (OAUJ-CDK500_F42) | 45 |
| Franky Dubois (Adonis_G2-1600) | 34 |
| Staszek Zola (OAUJ-CDK500_F42) | 32 |
| Staszek Zola (PROMPT5_Apogee) | 21 |
| Rachel Street (LCOGT-Teide-1m_4K) | 6 |
| Uliana Pylypenko (LCOGT-CTIO-1m_4K) | 6 |
| Uliana Pylypenko (LCOGT-SS-1m_4K) | 3 |
| Staszek Zola (PROMPT-MO-1_Apogee) | 2 |
Top 5 data uploaders!
| name | count |
|---|---|
| Franz-Josef Hambsch | 1836 |
| Mateusz Bronikowski | 211 |
| Charles Galdies | 174 |
| Alexios Liakos | 160 |
| Staszek Zola | 55 |
Clear skies!
Your BHTOM Team
bhtom.space
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