BHTOM Targets for 29 September, 2025
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wyrz...@gmail.com
Sep 29, 2025, 7:28:10 AMSep 29
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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 2025-09-29 11:26:30.686563+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 |
|---|---|---|---|---|---|---|
| AT2025ygf | 49.401917 | 74.992167 | 14.3 | 103.0 | Unknown | CV candidate, via TNS |
| Gaia21eez | 314.809000 | 78.384530 | 14.3 | 100.0 | YSO | dimming in known YSO |
| Gaia20cdl | 328.376930 | 47.219660 | 15.7 | 125.0 | YSO | Gaia Alerted YSO |
| AT2025yhi | 142.627417 | 16.366389 | 16.2 | 46.0 | Unknown | candidate SN or CV found by KATS via TNS |
| Gaia18dlf | 314.263980 | 43.695680 | 16.7 | 119.0 | YSO | Long term brightening in Gaia source coincident with YSO 2MASS J20570334+4341444 |
| AT2025yiq | 75.506500 | 51.796917 | 17.4 | 104.0 | Unknown | candidate CV or SN from TNS |
| Gaia23dua | 333.778240 | 58.818590 | 17.5 | 118.0 | Unknown | Brightening in candidate YSO |
| SDSS J101353.45+492758.1 | 153.472713 | 49.466156 | 18.2 | 59.0 | QSO | Weak Emission-Line Quasar, probably changing look AGN (the time scale of variability in optics is likely to be months or years). |
| PRIME-2025-BLG-0406 | 263.505436 | -31.927127 | 18.3 | 79.0 | Microlensing Event | microlensing |
| Gaia23ahl | 345.896160 | 62.479100 | 18.9 | 118.0 | Unknown | ~1 mag rise in Gaia source |
| Gaia20byp | 290.190620 | 11.398130 | 19.0 | 105.0 | Unknown | more than 1 mag rise in candidate YSO |
| Gaia20eax | 315.522900 | 52.481760 | 19.4 | 115.0 | YSO | Gaia Alerted YSO |
| Gaia21aru | 285.235060 | 18.808110 | 19.5 | 100.0 | Unknown | ~2 mag outburst in Gaia source near the Galactic plane |
| Gaia22bre | 313.563090 | 44.131420 | 20.2 | 118.0 | YSO | 1.5 mag rise in known YSO, previous event seen |
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 |
|---|---|---|---|---|---|---|
| LS I +61 302 | 40.131935 | 61.229332 | 9.6 | 116.0 | Unknown | Be-star with unknown compact companion |
| 4U2206+54 | 331.984320 | 54.518447 | 10.0 | 121.0 | XRB | Be X-ray binary |
| EECep | 332.344808 | 55.756738 | 10.4 | 120.0 | Variable star-other | Long period eclipsing binary with accretion disk, eclipse predicted for October |
| 2S0114+65 | 19.511240 | 65.291619 | 10.6 | 116.0 | XRB | Supergiant X-ray binary |
| RXJ0441.0+4431 | 70.247207 | 44.530349 | 10.7 | 109.0 | XRB | Be X-ray binary |
| RXJ0146.9+6121 | 26.750885 | 61.356573 | 11.3 | 119.0 | XRB | Be X-ray binary |
| V1413 Aql | 285.945155 | 16.438048 | 11.9 | 101.0 | Symbiotic star | known symbiotic star for regular monitoring |
| IGRJ06074+2205 | 91.860884 | 22.096600 | 12.1 | 94.0 | XRB | Be X-ray binary |
| ASASSN-24fw | 106.329000 | 6.205306 | 12.3 | 79.0 | 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 |
| BL_Lac | 330.680381 | 42.277772 | 12.7 | 129.0 | BL Lac | famous variable blazar |
| AM_Her | 274.055228 | 49.867989 | 12.9 | 91.0 | CV | Target for joint optical-radio observations |
| 8C0716_714 | 110.472701 | 71.343434 | 13.5 | 88.0 | QSO | high cadence variability suspected |
| GROJ2058+42 | 314.698071 | 41.776995 | 14.2 | 120.0 | XRB | Be X-ray binary |
| Gaia21fji | 315.992250 | 50.244500 | 14.5 | 117.0 | YSO | Optical monitoring of Gaia- and ZTF-alerted candidate eruptive YSOs |
| KS1947+300 | 297.397850 | 30.208827 | 14.6 | 110.0 | XRB | Be X-ray binary |
| 4U0115+63 | 19.633210 | 63.742520 | 14.9 | 118.0 | XRB | Be X-ray binary |
| IGRJ21343+4738 | 323.584883 | 47.633391 | 14.9 | 122.0 | XRB | Be X-ray binary |
| ZTF18abdciiz | 281.649375 | 0.922556 | 15.4 | 96.0 | Unknown | YSO candidate |
| SAXJ2103.5+4545 | 315.898792 | 45.751547 | 15.4 | 119.0 | XRB | Be X-ray binary |
| Gaia22efa | 67.656210 | 35.842100 | 15.4 | 114.0 | YSO | Brightening in candidate YSO. After initial accretion burst the brightness started to rise slowly. |
| Gaia24ala | 86.808830 | 0.152040 | 15.8 | 99.0 | YSO | Dimming in candidate YSO |
| Gaia24dfc | 52.509900 | 61.429790 | 16.6 | 111.0 | Unknown | Brightening in candidate YSO |
| Gaia22cav | 344.036730 | 58.517780 | 16.7 | 121.0 | YSO | 3 mag outburst in candidate EXOR, waiting for the next outbursts |
| SN2024afyu | 258.429383 | 7.625256 | 16.8 | 73.0 | SN | Interesting long-term Supernova |
| SDSS J013136.44+130331.0 | 22.901854 | 13.058618 | 17.5 | 160.0 | QSO | Candidate for lensed QSO |
| Gaia4323024741104637568 | 292.501025 | 17.933682 | 17.6 | 107.0 | Unknown | Possibly eruptive YSO which is approaching to the quiescence |
| SN2025bof | 299.147242 | 50.239614 | 17.8 | 107.0 | SN | Possible SNIa in nearby galaxy |
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| MXB0656-072 | 104.572033 | -7.209779 | 11.2 | 81.0 | XRB | Be X-ray binary |
| T Ori | 83.960201 | -5.476368 | 11.3 | 101.0 | YSO | Herbig AeBe star, YSO |
| AT2025wyg | 262.551250 | -27.896889 | 11.7 | 77.0 | Unknown | Nova found by Tadashi Kojima |
| V1787 Ori | 84.538767 | -6.821276 | 12.9 | 101.0 | YSO | Herbig Ae/Be Star |
| Mkn590 | 33.639835 | -0.766717 | 13.5 | 152.0 | QSO | Flaring quasar |
| TT Ori | 83.819730 | -4.762387 | 13.7 | 101.0 | YSO | eruptive variable, Orion type |
| PKS0454-234 | 74.263250 | -23.414450 | 14.1 | 108.0 | QSO | long time monitoring for ROTUZ team |
| IRAS 23226-3843 | 351.350833 | -38.446978 | 14.4 | 137.0 | AGN | changinglook AGN |
| ZTF18acruktt | 88.904388 | -12.398039 | 14.8 | 96.0 | YSO | YSO candidate |
| mrk1018 | 31.566619 | -0.291455 | 14.8 | 154.0 | AGN | changinglook AGN |
| V416Ori | 83.838583 | -5.703439 | 15.2 | 101.0 | YSO | variable YSO |
| AT2025xes | 66.887308 | -42.165719 | 15.2 | 109.0 | Unknown | Candidate nuclear transient from ATLAS via TNS |
| Gaia23bsf | 276.583080 | -14.036970 | 15.3 | 91.0 | Unknown | Star getting brighter very slowly |
| ASASSN-25cd | 277.969917 | -28.807539 | 15.4 | 91.0 | Unknown | A Deep, Ongoing, Dipping Event |
| 1RXS_J173546.9-302859 | 263.946400 | -30.482900 | 15.8 | 79.0 | Unknown | Possible X-ray transient from SVOM |
| AT2025xeg | 119.111725 | -78.699383 | 15.8 | 83.0 | Unknown | Candidate supernova from ATLAS and GOTO via TNS |
| HE0413_4031 | 63.810269 | -40.394754 | 16.0 | 112.0 | QSO | Long term variable quasar for monitoring |
| Gaia24amo | 249.148921 | -53.749919 | 16.1 | 73.0 | Microlensing Event | candidate microlensing event, with the second peak |
| PMNJ0730-6602 | 112.706495 | -66.038578 | 16.4 | 81.0 | AGN | IAUZ Target |
| Gaia24csq | 286.710270 | -26.939590 | 16.7 | 99.0 | Unknown | potential slowly rising microlensing event |
| HE0435-4312 | 69.299139 | -43.101189 | 16.8 | 107.0 | QSO | Long term variable quasar for monitoring |
| Gaia23cnm | 285.322920 | -18.717130 | 17.6 | 99.0 | Unknown | slow and long rise, possible microlensing or YSO |
| ZTF20abendxc | 281.224708 | -8.538111 | 17.8 | 95.0 | YSO | Possibly eruptive YSO |
Last week's total of images processed: 16828 (16669 with success).
Last week's targets observed:
| camera | target_names |
|---|---|
| AZT-8_C4-16000 | Gaia19cuu, Gaia24amv, Gaia18bad, Gaia18acq, Gaia23bcv, Gaia17cuh, Gaia18awg |
| AZT-8_PL-4710 | Gaia23bcv |
| Adonis_G2-1600 | Gaia24ayd, EECep, Gaia24azi, TCrB, LS I +61 302, Gaia24azc, Gaia24dfv, TabbysStar |
| Adyu60_Andor-934 | B1721+343, Gaia21fji, Gaia23bcv, Gaia24dov, AT2025hkm, Gaia4097156564231394944, Gaia18awg, Gaia2064258730972990976, Gaia23bsf, Gaia24cgj, Gaia23cpd, Mrk 841, Gaia21clo, ASASSN-24fs, Gaia24csr, Gaia24azc, GaiaBH1, AT2025mau, SN2025fvw, Gaia24ccy |
| EEye_QHY268M | AT2025mau, Gaia24csq, Gaia23cnm, AT2024kwu, Gaia24aup |
| HAO68_G2-1600 | Gaia20cdl, AT2025ygf |
| LCOGT-CTIO-1m_4K | Gaia24amo, 3I_cal_test_mock_target, 3I_ATLAS-lsc-1m-all_mock_target_new |
| OAUJ-CDK500_U47 | Gaia24ayd, Gaia24bux, AT2025mau, Gaia23dqt, EECep, AT2025nsa, Gaia21fji, SN2025bof, SN2024afyu |
| PROMPT6_FLI | ASASSN-24fw |
| ROAD_FLI-KAF-16803 | HD 269858, HD 268687, S Dor |
| ROAD_QHY600M | AT2025ggn, ASASSN-25db, SN2025pht, V1413 Aql, Gaia24dhn, Gaia23cpd, AT 2025nlr, HD 268687, ASASSN-21qj, S Dor, AT2025hfm, EECep, Gaia24amo, ASASSN-25cy, TCrB, ASASSN-24fw, Gaia23dnm, Gaia24ccy |
| SOAB_ZWO-ASI2600MM | Asteroid_test |
| SUTO-Otivar_ASI1600MM | LS I +61 302, 1H2202+501 (BD+49 3718), Gaia24azc, TabbysStar, 4U0115+63 |
| Slooh-AU_FLI-KAF-16803 | ASASSN-25cd, IRAS 23226-3843, AT2025xes |
| UZPW50_Chile_QHY268PRO | SN2023zzn, mrk1018, TDE2025qhf, Mkn590, Gaia18acq, AT2025mb, Asteroid_test, AT2025xes |
| UwB_SBIG-4040 | RXJ0146.9+6121, GROJ2058+42, 2S0114+65, Gaia22efa, Gaia21fji, Gaia23bcv, Gaia24dey, LS I +61 302, Gaia24dcs, Gaia24dfv, Gaia24bux, Gaia24dfc, Gaia23dqt, mrk1018, Gaia16ble, Mkn590, EECep, TCrB, SDSS J013136.44+130331.0, 4U2206+54, V1413 Aql, KS1947+300, IGRJ21343+4738, RXJ0441.0+4431, Gaia24dfd, NGC5683-Seyfert, Gaia24big, Gaia24azc, 4U0115+63, Gaia24ayd, AM_Her, BL_Lac |
| ZAO_G2-1600 | LS I +61 302 |
Last week's fits uploads score (sorted by count)
| observatory-user | count |
|---|---|
| Franz-Josef Hambsch (ROAD_FLI-KAF-16803) | 7666 |
| Franz-Josef Hambsch (ROAD_QHY600M) | 7286 |
| Dariia Rusanova (AZT-8_C4-16000) | 703 |
| Waldemar Ogloza (Adyu60_Andor-934) | 430 |
| Fraser Gillan (LCOGT-CTIO-1m_4K) | 111 |
| Ernest Glowacki (UwB_SBIG-4040) | 108 |
| Nazlı Karaman (Adyu60_Andor-934) | 90 |
| Nicholas Rattenbury (Slooh-AU_FLI-KAF-16803) | 67 |
| Agata Wozniak (UZPW50_Chile_QHY268PRO) | 66 |
| Yauheni Stsefanenka (OAUJ-CDK500_U47) | 52 |
| Franky Dubois (Adonis_G2-1600) | 50 |
| Alicja Pucek (OAUJ-CDK500_U47) | 48 |
| Adam Popowicz (SUTO-Otivar_ASI1600MM) | 42 |
| Sebastian Kurowski (OAUJ-CDK500_U47) | 40 |
| Sjoerd Dufoer (EEye_QHY268M) | 20 |
| Dariia Rusanova (AZT-8_PL-4710) | 10 |
| Wojciech Burzyński (UwB_SBIG-4040) | 9 |
| Jan Kåre Trandem Qvam (HAO68_G2-1600) | 8 |
| Charles Galdies (ZAO_G2-1600) | 8 |
| Staszek Zola (PROMPT6_FLI) | 8 |
| Mauritz Wicker (LCOGT-CTIO-1m_4K) | 3 |
| Lukasz Wyrzykowski (UZPW50_Chile_QHY268PRO) | 2 |
| Lukasz Wyrzykowski (SOAB_ZWO-ASI2600MM) | 1 |
Top 5 data uploaders!
| name | count |
|---|---|
| Franz-Josef Hambsch | 14952 |
| Dariia Rusanova | 713 |
| Waldemar Ogloza | 430 |
| Fraser Gillan | 111 |
| Ernest Glowacki | 108 |
Clear skies!
Your BHTOM Team
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