BHTOM Targets for 27 April, 2026
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wyrz...@gmail.com
Apr 27, 2026, 9:44:41 AMApr 27
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Hello,
Top 5 data uploaders!
Clear skies!
Your BHTOM Team
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Greetings from the BHTOM Automated Newsletter!
Please note the main server name change from bh-tom2.astrolabs.pl to bh-tom2.astrouw.edu.pl. The alias bhtom.space is still valid.
As of 2026-04-27 13:39:27.000760+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 |
|---|---|---|---|---|---|---|
| G9-40 | 134.719417 | 21.073842 | 12.6 | 95.0 | Planetary Transit | ExoClock high alert planetary transit, depth 4mmag, coords corrected for high proper motion |
| SN 2026kid | 228.988442 | 56.308914 | 15.4 | 109.0 | SN | Closeby Type II supernova at 14 Mpc. Strong CSM interaction |
| SN 2026kie | 163.152190 | 22.931718 | 16.9 | 118.0 | SN | Astro-COLIBRI target |
| TDE2026irt | 240.177483 | 53.491078 | 17.3 | 109.0 | TDE | TDE-He candidate |
| SN 2026gzf | 149.928633 | 0.418439 | 17.4 | 115.0 | SN | SN 2026gzf (EP260321a), a type Ic-BL SN and the target of AAVSO observation campaign 920, is predicted to undergo CSM interaction with ejecta from suspected prior supernova imposter event AT 2018mtl. |
| ZTF26aatupre | 171.579968 | -18.451297 | 19.3 | 139.0 | Unknown | Possible SN candidate |
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 | 7.9 | 133.0 | Nova | recurent nova predicted to explode 2024/2025 |
| V1413 Aql | 285.945155 | 16.438048 | 10.4 | 103.0 | Symbiotic star | known symbiotic star for regular monitoring |
| 1H1936+541 (BD+53 2262) | 293.217949 | 53.879297 | 10.6 | 85.0 | XRB | optical counterpart of the Be X-Ray Binary |
| V1117 Her | 249.776779 | 9.798698 | 12.6 | 138.0 | Unknown | PMS star, Herbig Ae star |
| Mrk 817 | 219.092017 | 58.794299 | 13.6 | 107.0 | Unknown | Seyfert 1 AGN |
| SAXJ2103.5+4545 | 315.898792 | 45.751547 | 13.7 | 72.0 | XRB | Be X-ray binary |
| 8C0716_714 | 110.472701 | 71.343434 | 13.7 | 73.0 | QSO | checking of ~1.7-days periodic variability and quasi-periodic variability of ~24 days |
| KS1947+300 | 297.397850 | 30.208827 | 13.8 | 89.0 | XRB | Be X-ray binary |
| SN 2026fvx | 183.742221 | 63.787892 | 14.0 | 99.0 | SN | nearby supernova Type Ia |
| Mrk 841 | 226.004963 | 10.437732 | 14.4 | 153.0 | AGN | changinglook AGN |
| Gaia21fji | 315.992250 | 50.244500 | 14.4 | 72.0 | YSO | Optical monitoring of Gaia- and ZTF-alerted candidate eruptive YSOs |
| GROJ2058+42 | 314.698071 | 41.776995 | 14.8 | 73.0 | XRB | Be X-ray binary |
| AT2026ava | 316.651371 | 14.521939 | 14.9 | 75.0 | Unknown | AGN or TDE, Mag (r) is 16.88 on Jan 20, 2026 |
| AT2025acft | 295.939833 | 40.367889 | 15.1 | 87.0 | Microlensing Event | Candidate long microlensing event from Chinese KATS survey, KATS25V002 |
| AT2025sqe | 288.715125 | 8.001778 | 15.2 | 103.0 | Unknown | slow galactic very red transient |
| NGC5683-Seyfert | 218.718578 | 48.661870 | 15.7 | 117.0 | AGN | active nucleus of a nearby galaxy for frequent monitoring |
| SN 2026fjc | 195.179418 | 37.310053 | 15.7 | 126.0 | SN | SN Ia (according to TNS) |
| ZTF18aarippg | 217.566838 | 23.062372 | 15.8 | 143.0 | QSO | Tick-Tok possibly merging Super Massive Black Hole binary |
| Gaia16aoz | 162.115140 | 71.726660 | 16.3 | 88.0 | QSO | QSO with a long-term and short-term variability |
| Gaia4323024741104637568 | 292.501025 | 17.933682 | 16.3 | 97.0 | Unknown | Possibly eruptive YSO which is approaching to the quiescence |
| Q0957+561_A | 150.336216 | 55.898776 | 16.4 | 92.0 | QSO | firstly confirmed lensed quasar (double image), image A (top) |
| SN2024afyu | 258.429383 | 7.625256 | 16.6 | 131.0 | SN | Interesting long-term Supernova |
| SN 2026dix | 177.655950 | 55.353589 | 16.9 | 104.0 | Unknown | Closeby IIb supernova |
| AT2026bti | 210.693421 | 24.826742 | 17.5 | 141.0 | SN | optical transient |
| AM_Her | 274.055228 | 49.867989 | 17.6 | 98.0 | CV | Target for joint optical-radio observations |
| SDSSJ094533.99+100950.1 | 146.391622 | 10.163917 | 17.7 | 109.0 | QSO | Long term variable quasar for monitoring |
| AT2023zgo | 132.228746 | 31.783561 | 17.8 | 89.0 | AGN | Bowen Fluorescence Flare, ePESSTO+ target |
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| HD54740 | 107.409460 | -11.037909 | 10.9 | 77.0 | Variable star-other | variable star with period 0.856265462d |
| GaiaDR3_4263591911398361472 | 289.926500 | -0.049900 | 11.2 | 104.0 | Variable star-other | This target is part of a paper about I am writing a revision for, and I would like to confirm if it is a binary system or not. It has a period of ~1.435 days (if a binary, ~2x1.435 days) |
| HD 98800 | 170.521620 | -24.777768 | 11.3 | 137.0 | YSO | Pre-main sequence quadruple system (AaAb + BaBb) with circumbinary (BaBb) disk to eclipse AaAb |
| MXB0656-072 | 104.572033 | -7.209779 | 11.4 | 73.0 | XRB | Be X-ray binary |
| ASASSN-26bp | 225.854950 | -63.189410 | 12.5 | 130.0 | Star | Star Undergoing Deep Dimming Events |
| V4141 Sgr | 267.599257 | -19.895328 | 13.0 | 129.0 | Symbiotic star | symbiotic star |
| NGC 6814 | 295.669109 | -10.323641 | 13.4 | 101.0 | AGN | Long term monitored AGN |
| ngc 3783 | 174.757132 | -37.738611 | 13.7 | 138.0 | AGN | Nearby Seyfert 1 galaxy, active galactic nucleus, interesting for X-ray, high cadence data neeeded, potentially flaring |
| Nova Centauri 2025 | 219.340667 | -58.794667 | 14.2 | 135.0 | Nova | potential nova from ASASSN, V1935 Cen |
| V5856 Sgr | 275.217710 | -28.370030 | 14.2 | 122.0 | Nova | CV and Nova outburts |
| AT2026ayt | 141.847458 | -32.008578 | 14.3 | 112.0 | Unknown | Optical transient, potential weird supernova |
| ASASSN-26af | 82.501958 | -66.724833 | 15.1 | 88.0 | Unknown | Undergoing Deep Dimming Events in the LMC |
| AR Sco | 245.447013 | -22.886218 | 15.1 | 149.0 | CV | White Dwarf pulsar |
| SN2026gzx | 178.487196 | -23.162647 | 15.1 | 145.0 | SN | SN Ia, bright nearby supernova |
| AT 2025nlr | 227.013640 | -40.141550 | 15.3 | 151.0 | Nova | Astro-COLIBRI target |
| Gaia19dbf | 178.699417 | -64.491850 | 15.4 | 124.0 | Unknown | Possibly a YSO |
| Nova Sagittarii 2025 no.4 | 270.969917 | -31.456667 | 15.4 | 125.0 | Nova | Nova Sgr 2025 No. 4 is TCP J18035290-3127298 is TCP J18035278-3127240 |
| ASASSN-26cp | 242.076625 | -64.185778 | 16.0 | 126.0 | Microlensing Event | Possible Microlensing Event, matches to GAIA |
| ZTF20abendxc | 281.224708 | -8.538111 | 16.1 | 114.0 | YSO | Possibly eruptive YSO |
| AT2025xvc | 85.526933 | -67.018517 | 16.3 | 89.0 | Nova | possibile bright nova or CV in LMC from GOTO,TNS |
| CTCVJ2056-3014 | 314.217286 | -30.244198 | 16.4 | 89.0 | CV | fast spinning WD in a CV |
| PMNJ0730-6602 | 112.706495 | -66.038578 | 16.4 | 98.0 | AGN | IAUZ Target |
| ASASSN-25cd | 277.969917 | -28.807539 | 16.5 | 119.0 | Unknown | A Deep, Ongoing, Dipping Event |
| Gaia24csq | 286.710270 | -26.939590 | 16.9 | 112.0 | Unknown | potential slowly rising microlensing event |
| ASASSN-25fd | 187.851667 | -59.119028 | 17.3 | 131.0 | Nova | Nova in Crux, PNV J12312434-5907133 |
| AT 2025acve | 270.700667 | -5.976583 | 17.4 | 124.0 | Unknown | Unclassified optical transient discovered by XOSS, potential microlensing event |
| Gaia23cnm | 285.322920 | -18.717130 | 17.5 | 112.0 | Unknown | slow and long rise, possible microlensing or YSO |
| Gaia24amo | 249.148921 | -53.749919 | 17.7 | 131.0 | Microlensing Event | candidate microlensing event, with the second peak |
Last week's total of images processed: 17812 (16278 with success).
Last week's targets observed:
| camera | target_names |
|---|---|
| Adonis_G2-1600 | SN 2026fvx, TCrB, AM_Her, TabbysStar, SN 2026dix |
| AndromedaC14_QHY600M | TCrB, LS I +61 302 |
| AsiagoAO-0.67_G4-16000 | TCrB, SN 2026kid, SN 2025ajmz, SN 2026kie, SN 2025coe |
| Astrolab-IRIS_SBIG | AM_Her |
| EEye_QHY268M | AT2025acft, AT 2025acve, Gaia24csq, Q0957+561_A |
| HAO68_C3-26000 | AT2025acft, SN 2026fvx, SN 2026dix |
| HAO68_G2-1600 | AT2025acft, SN 2026fvx, SN 2025aico, TCrB, ZTF18aarippg, AT2025abao, SN 2026kid, SN 2026dix |
| Kryoneri-1.2_Andor-Zyla | TCrB, V1117 Her, ZTF18aarippg, Gaia23bab, AT2023zgo, AT2025sqe, SN2024afyu, IGRJ06074+2205, Mrk 841, TDE2025aljd |
| LCOGT-CTIO-1m_4K | Gaia20ehk, OGLE-2026-BLG-0128, Gaia24csq, ASASSN-26cm, Gaia24amo, AT2026ayt, ASASSN-26cp |
| LCOGT-HO-2m_Muscat | Aql X-1, MAXI J1659-152, 4U 1957+11, Cen X-4, V4641 Sgr |
| LCOGT-SAAO-1m_4K | OGLE-2026-BLG-0128, ASASSN-26cm |
| LCOGT-SS-1m_4K | Gaia20ehk, OGLE-2026-BLG-0128, Gaia24csq, ASASSN-26cm, Gaia24amo, AT2026ayt, ASASSN-26cp |
| LCOGT-SS-2m_Muscat | Aql X-1, XTE J1650-500, 4U 1957+11, XTE J1550-564, MAXI J0556-332, V4641 Sgr, GX 339-4 |
| LCOGT-Teide-1m_4K | ASASSN-26cm |
| Moravian_C3-61000_PRO | TCP J21220926+4926242 |
| OAUJ-CDK500_U47 | AT2025acft, SN2024afyu |
| Ostrowik-60-cm_SOFIA_E2V | 8C0716_714, G9-40 |
| PROMPT-MO-1_Apogee | SN2026gzx, AT2026ayt, ASASSN-26bl |
| PROMPT5_Apogee | AT2026ayt, SN2026gzx |
| Planetarium_Slaskie_Kepler4040 | SN 2026fvx, SN 2025aico, GB6 J0742+5444, TOI-1259Ab, Q0957+561_A, V1117 Her, TCrB, Mrk 817, GaiaDR3_4015591806678568576, AT2026bti, TabbysStar, OJ287, GaiaDR3_4263591911398361472, SU Lyn, SDSS_J154329.47+335908.6, SN 2026dix, Gaia23cqg |
| ROAD40_QHY600M | HD 312919, TCP J18265456-2719122, CD-34 11794, ASASSN-25db, HD 98800, TCrB, ASASSN-21js, FU Ori, Gaia19eyy, FO_Aqr, V1117 Her, OY Mon, EX Lup, Gaia23dnm, ASASSN-25bv, ASASSN-24fw, ASASSN-21qj, Gaia24dhn, Gaia24ccy |
| ROADC14_QHY600M | Gaia20ehk, ASASSN-23ht, ASASSN-26bp, ASASSN-25ff, GaiaDR3_4263591911398361472, AR_Pav, 2MASS J07233213+0926393, V5856 Sgr, TDE2025aarm, Nova Sagittarii 2025 no.4, ASASSN-25eq, ASASSN-25dy, Nova Centauri 2025, Nova Velorum 2025, ASASSN-25cy, V4141 Sgr, AT2025xvc, V1413 Aql, AT 2025nlr, V1280 Sco |
| SHO_ASI6200MM-Pro | SN 2026efq, BASW 1, ZTF17aabbvnq, ANT2020cwpfe, SN 2026ejy |
| SOAB_ZWO-ASI2600MM | AT2026ava, EECep, ZTF18aarippg, AM_Her, SN 2026kid, Mrk 841, TCrB, TCP J21220926+4926242, ZTF20abjgfwm, SN2024afyu, AT 2026hyy, SN 2026dix, AT2025acft, AT 2025acve, Q0957+561_A, SN 2026fvx, Mrk 817, SN 2026fov, AT2025sqe, LS I +61 302 |
| SUTO-Otivar_ASI1600MM | TCrB, TYC 168-784-1, IGRJ06074+2205 |
| Salerno_Observatory_FLI | AT2025acft, SN 2026fvx, 8C0716_714, SN 2026fjc, TCrB, AM_Her, Gaia24dov, Mrk 841, SAXJ2103.5+4545, IGRJ06074+2205, V1413 Aql, Gaia24ayd, Gaia21fji |
| Seestar-S30 | SN 2026fvx, 8C0716_714 |
| Seestar-S50 | SN 2026fvx, 8C0716_714, BL_Lac, AM_Her, SN 2026kid |
| TJO_MEIA3 | SN 2026fvx, TCrB, EECep, AM_Her, SN2024afyu, Gaia24bux, Gaia24ayd |
| UwB_SBIG-4040 | TCrB, SN 2026fjc, Mrk 817 |
| ZAO_G2-1600 | TCrB |
Last week's fits uploads score (sorted by count)
| observatory-user | count |
|---|---|
| Franz-Josef Hambsch (ROADC14_QHY600M) | 7450 |
| Franz-Josef Hambsch (ROAD40_QHY600M) | 6765 |
| Valerio Bozza (Salerno_Observatory_FLI) | 765 |
| Waldemar Ogloza (Planetarium_Slaskie_Kepler4040) | 354 |
| Michal Siwak (Moravian_C3-61000_PRO) | 255 |
| Lukasz Wyrzykowski (Ostrowik-60-cm_SOFIA_E2V) | 239 |
| Sebastian Kurowski (SOAB_ZWO-ASI2600MM) | 208 |
| Charles Galdies (ZAO_G2-1600) | 189 |
| Jan Kåre Trandem Qvam (HAO68_G2-1600) | 187 |
| Rachel Street (LCOGT-CTIO-1m_4K) | 162 |
| Yen-Hsing Lin (SHO_ASI6200MM-Pro) | 151 |
| Marcin Michalski (Seestar-S50) | 142 |
| Josep Manel Carrasco (TJO_MEIA3) | 142 |
| Konstantina Vrontaki (Kryoneri-1.2_Andor-Zyla) | 110 |
| Rachel Street (LCOGT-SS-1m_4K) | 96 |
| Franky Dubois (Adonis_G2-1600) | 62 |
| Staszek Zola (OAUJ-CDK500_U47) | 56 |
| Evangelos Gkiokas (Kryoneri-1.2_Andor-Zyla) | 50 |
| Franz-Josef Hambsch (AndromedaC14_QHY600M) | 48 |
| Jacek Drazkowski (Seestar-S50) | 46 |
| Rachel Street (LCOGT-SAAO-1m_4K) | 43 |
| Mauritz Wicker (LCOGT-CTIO-1m_4K) | 39 |
| Fraser Lewis (LCOGT-SS-2m_Muscat) | 36 |
| Mauritz Wicker (LCOGT-SS-1m_4K) | 29 |
| Adam Popowicz (SUTO-Otivar_ASI1600MM) | 23 |
| Fraser Lewis (LCOGT-HO-2m_Muscat) | 20 |
| Jan Kåre Trandem Qvam (HAO68_C3-26000) | 18 |
| Jacek Drazkowski (Seestar-S30) | 16 |
| Staszek Zola (PROMPT-MO-1_Apogee) | 16 |
| Sjoerd Dufoer (EEye_QHY268M) | 15 |
| Andrea Reguitti (AsiagoAO-0.67_G4-16000) | 14 |
| Krzysztof Słowik (Seestar-S50) | 12 |
| Wojciech Burzyński (UwB_SBIG-4040) | 12 |
| Robert Nowakowski (Seestar-S50) | 8 |
| Staszek Zola (PROMPT5_Apogee) | 7 |
| Jerzy Surma (Seestar-S50) | 6 |
| Joysankar Majumdar (LCOGT-SS-1m_4K) | 6 |
| Weronika Skrobacz (Seestar-S50) | 3 |
| Mauritz Wicker (LCOGT-SAAO-1m_4K) | 3 |
| Mauritz Wicker (LCOGT-Teide-1m_4K) | 3 |
| Joysankar Majumdar (LCOGT-CTIO-1m_4K) | 3 |
| Franky Dubois (Astrolab-IRIS_SBIG) | 2 |
Top 5 data uploaders!
| name | count |
|---|---|
| Franz-Josef Hambsch | 14263 |
| Valerio Bozza | 765 |
| Waldemar Ogloza | 354 |
| Rachel Street | 301 |
| Michal Siwak | 255 |
Clear skies!
Your BHTOM Team
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