BHTOM Targets for 27 October, 2025
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wyrz...@gmail.com
Oct 27, 2025, 3:01:47 PMOct 27
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Top 5 data uploaders!
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Your BHTOM Team
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Greetings from the BHTOM Automated Newsletter!
As of 2025-10-27 19:00:38.890020+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 |
|---|---|---|---|---|---|---|
| HD 312919 | 273.430107 | -19.242035 | 10.3 | 60.0 | Unknown | a unknown variable source ASASJ181343-1914.5 |
| 4263591911398361472 | 289.926500 | -0.049900 | 10.7 | 80.0 | 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) |
| CD-34 11794 | 263.710221 | -34.276816 | 10.9 | 53.0 | Unknown | Red Supergiant |
| HD269110 | 77.294201 | -69.603390 | 11.2 | 92.0 | LPV | known LPV star |
| TCP J16571809+7149590 | 254.325375 | 71.833056 | 15.4 | 89.0 | Unknown | Astro-COLIBRI target |
| ZTF25abzovnd | 260.774690 | 42.584722 | 17.0 | 72.0 | Unknown | Astro-COLIBRI target, unidentified optical transient from Unistellar |
| XB 1732-30 | 263.953000 | -30.537000 | 20.0 | 52.0 | Unknown | Astro-COLIBRI target |
| Gaia19dkg | 297.528125 | 29.395961 | 20.3 | 93.0 | CV | Potential CV |
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 |
|---|---|---|---|---|---|---|
| 4U2206+54 | 331.984320 | 54.518447 | 9.4 | 118.0 | XRB | Be X-ray binary |
| LS I +61 302 | 40.131935 | 61.229332 | 9.4 | 131.0 | Unknown | Be-star with unknown compact companion |
| RXJ0441.0+4431 | 70.247207 | 44.530349 | 9.6 | 133.0 | XRB | Be X-ray binary |
| EECep | 332.344808 | 55.756738 | 10.2 | 118.0 | Variable star-other | Long period eclipsing binary with accretion disk, eclipse predicted for October |
| V1413 Aql | 285.945155 | 16.438048 | 10.5 | 80.0 | Symbiotic star | known symbiotic star for regular monitoring |
| 2S0114+65 | 19.511240 | 65.291619 | 10.6 | 127.0 | XRB | Supergiant X-ray binary |
| RXJ0146.9+6121 | 26.750885 | 61.356573 | 11.2 | 131.0 | XRB | Be X-ray binary |
| IGRJ06074+2205 | 91.860884 | 22.096600 | 12.4 | 121.0 | XRB | Be X-ray binary |
| SAXJ2103.5+4545 | 315.898792 | 45.751547 | 12.6 | 110.0 | XRB | Be X-ray binary |
| AM_Her | 274.055228 | 49.867989 | 12.9 | 83.0 | CV | Target for joint optical-radio observations |
| Gaia21fji | 315.992250 | 50.244500 | 13.1 | 109.0 | YSO | Optical monitoring of Gaia- and ZTF-alerted candidate eruptive YSOs |
| KS1947+300 | 297.397850 | 30.208827 | 13.3 | 94.0 | XRB | Be X-ray binary |
| Gaia22efa | 67.656210 | 35.842100 | 13.8 | 139.0 | YSO | Brightening in candidate YSO. After initial accretion burst the brightness started to rise slowly. |
| GROJ2058+42 | 314.698071 | 41.776995 | 14.2 | 109.0 | XRB | Be X-ray binary |
| 4U0115+63 | 19.633210 | 63.742520 | 14.4 | 128.0 | XRB | Be X-ray binary |
| BL_Lac | 330.680381 | 42.277772 | 14.4 | 121.0 | BL Lac | famous variable blazar |
| IGRJ21343+4738 | 323.584883 | 47.633391 | 14.6 | 115.0 | XRB | Be X-ray binary |
| 8C0716_714 | 110.472701 | 71.343434 | 14.7 | 105.0 | QSO | checking of ~1.7-days periodic variability and quasi-periodic variability of ~24 days |
| Gaia24ala | 86.808830 | 0.152040 | 15.0 | 123.0 | YSO | Dimming in candidate YSO |
| Q0957+561_A | 150.336216 | 55.898776 | 16.8 | 85.0 | QSO | firstly confirmed lensed quasar (double image), image A (top) |
| Gaia24dfc | 52.509900 | 61.429790 | 17.0 | 128.0 | Unknown | Brightening in candidate YSO |
| 2025eve | 138.673796 | 15.702344 | 17.2 | 76.0 | TDE | Classified as TDE |
| Gaia24bux | 347.418150 | 62.482960 | 17.2 | 121.0 | YSO | Brightening in Gaia and Wise source, possibly new young eruptive star |
| Gaia22cav | 344.036730 | 58.517780 | 17.2 | 122.0 | YSO | 3 mag outburst in candidate EXOR, waiting for the next outbursts |
| Gaia2204674337304419072 | 334.773114 | 61.604365 | 17.3 | 117.0 | Unknown | Possibly eruptive YSO which is approaching to the quiescence |
| SDSS J013136.44+130331.0 | 22.901854 | 13.058618 | 17.5 | 173.0 | QSO | Candidate for lensed QSO |
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| T Ori | 83.960201 | -5.476368 | 11.1 | 124.0 | YSO | Herbig AeBe star, YSO |
| MXB0656-072 | 104.572033 | -7.209779 | 11.6 | 104.0 | XRB | Be X-ray binary |
| ASASSN-25bv | 134.564850 | -43.165320 | 11.9 | 71.0 | Unknown | bright star with large dimmings from ASASSN |
| AT2025xvc | 85.526933 | -67.018517 | 13.0 | 91.0 | Unknown | possibile bright nova or CV in LMC from GOTO,TNS |
| Mkn590 | 33.639835 | -0.766717 | 13.6 | 166.0 | QSO | Flaring quasar |
| V1787 Ori | 84.538767 | -6.821276 | 13.9 | 123.0 | YSO | Herbig Ae.Be Star |
| IRAS 23226-3843 | 351.350833 | -38.446978 | 14.1 | 117.0 | AGN | changinglook AGN |
| TT Ori | 83.819730 | -4.762387 | 14.5 | 124.0 | YSO | eruptive variable, Orion type |
| ZTF18acruktt | 88.904388 | -12.398039 | 14.9 | 117.0 | YSO | YSO candidate |
| PKS0454-234 | 74.263250 | -23.414450 | 14.9 | 124.0 | QSO | long time monitoring for ROTUZ team |
| AT2025xes | 66.887308 | -42.165719 | 15.3 | 116.0 | Unknown | Candidate nuclear transient from ATLAS via TNS |
| mrk1018 | 31.566619 | -0.291455 | 15.3 | 167.0 | AGN | changinglook AGN |
| HE0413_4031 | 63.810269 | -40.394754 | 16.0 | 119.0 | QSO | Long term variable quasar for monitoring |
| PMNJ0730-6602 | 112.706495 | -66.038578 | 16.3 | 82.0 | AGN | IAUZ Target |
| AT2025aarn | 69.331575 | -8.776647 | 16.4 | 136.0 | Unknown | bright new source |
| AT 2025yrt | 76.980160 | -18.189910 | 16.5 | 125.0 | Unknown | Astro-COLIBRI target |
| CTCVJ2056-3014 | 314.217286 | -30.244198 | 16.6 | 95.0 | CV | fast spinning WD in a CV |
| AT2025xeg | 119.111725 | -78.699383 | 16.9 | 78.0 | Unknown | Candidate supernova from ATLAS and GOTO via TNS |
| Gaia24csq | 286.710270 | -26.939590 | 16.9 | 72.0 | Unknown | potential slowly rising microlensing event |
| HE0435-4312 | 69.299139 | -43.101189 | 17.1 | 114.0 | QSO | Long term variable quasar for monitoring |
| Gaia23cnm | 285.322920 | -18.717130 | 17.6 | 72.0 | Unknown | slow and long rise, possible microlensing or YSO |
Last week's total of images processed: 10497 (9501 with success).
Last week's targets observed:
| camera | target_names |
|---|---|
| Adonis_G2-1600 | Gaia24dja, LS I +61 302 |
| Adyu60_Andor-934 | Gaia19cuu |
| EEye_QHY268M | Gaia23cnm, AT2025mau, Gaia24aup, Gaia24csq |
| Flarestar-MPC171_G2-1600 | Gaia22efa, TX Ori, TCrB, OY Mon, LS I +61 302, 1H2202+501 (BD+49 3718) |
| LCOGT-SAAO-1m_4K | EP-01709247298, GRB251023B |
| LCOGT-SS-2m_Spectral | AT2025aarn |
| LCOGT-SS-40cm_QHY600M | AT2025aarn |
| MOLETAI-35cm_CCD4710 | AM_Her |
| OAUJ-CDK500_U47 | TCrB, GROJ2058+42, AT2024kwu, AT2025ygf, AT2025nsa, AT2025yiq, EECep, SN2024afyu, Q0957+561_A, Gaia23crr, Gaia24azc, ASASSN-24fw |
| PIWNICE90_C4-16000EC | Gaia22efa, Gaia21fji, Gaia24bux, TCrB, BL_Lac, Gaia24dfc, Gaia22awp, Gaia24ayd, LS I +61 302, Gaia21brx, SN2025bof, EECep, 8C0716_714, Gaia24dfv, Gaia24cjg |
| ROAD_FLI-KAF-16803 | V348 Sgr, HD 269006, HD269110, CD-34 11794 |
| ROAD_QHY600M | ASASSN-25db, V348 Sgr, AR_Pav, HD269110, HD 312919, AT2025ggn, TCrB, V1787 Ori, SN2025pht, ASASSN-25cy, CD-34 11794, HD 269006, HD 268687, ASASSN-21qj, ASASSN-24fw |
| SOAB_ZWO-ASI2600MM | 4U2206+54, AT2025yiq, mrk1018, Gaia2204674337304419072, Gaia22efa, AM_Her, IGRJ21343+4738, SAXJ2103.5+4545, 2025eve, SDSS J013136.44+130331.0, Gaia21fji, Gaia24bux, EECep, SDSSJ094533.99+100950.1, BL_Lac, Mkn590, GROJ2058+42, Gaia22cav, AT2025yhi, LS I +61 302, TT Ori, Q0957+561_A |
| SUHORA60_APOGEE | Gaia22cav, Gaia22apf, ZTF18abdciiz |
| UZPW50_Chile_QHY268PRO | V1787 Ori, T Ori, mrk1018, Gaia24ala, AT2025xes, AT 2025yrt, PKS0454-234, Gaia24aqv, TDE2025qhf, UX Ori, AT2025mb, AT2025aarn, SN 2025uue, AT2025oas, SN2025zjx, AT2025xvc, Mkn590, Gaia23dbm, HD 269006, TT Ori |
| UwB_SBIG-4040 | EECep, AM_Her, BL_Lac |
Last week's fits uploads score (sorted by count)
| observatory-user | count |
|---|---|
| Franz-Josef Hambsch (ROAD_FLI-KAF-16803) | 5392 |
| Franz-Josef Hambsch (ROAD_QHY600M) | 2698 |
| Staszek Zola (OAUJ-CDK500_U47) | 816 |
| Agnieszka Gurgul (PIWNICE90_C4-16000EC) | 799 |
| Agata Wozniak (UZPW50_Chile_QHY268PRO) | 275 |
| Sebastian Kurowski (SOAB_ZWO-ASI2600MM) | 194 |
| Justas Zdanavicius (MOLETAI-35cm_CCD4710) | 116 |
| Stephen M. Brincat (Flarestar-MPC171_G2-1600) | 61 |
| Michal Siwak (SUHORA60_APOGEE) | 55 |
| Alicja Pucek (OAUJ-CDK500_U47) | 51 |
| Franky Dubois (Adonis_G2-1600) | 12 |
| Wojciech Burzyński (UwB_SBIG-4040) | 9 |
| Waldemar Ogloza (Adyu60_Andor-934) | 6 |
| Fraser Lewis (LCOGT-SS-2m_Spectral) | 4 |
| Sjoerd Dufoer (EEye_QHY268M) | 4 |
| Lukasz Wyrzykowski (LCOGT-SAAO-1m_4K) | 2 |
| Fraser Lewis (LCOGT-SS-40cm_QHY600M) | 1 |
Top 5 data uploaders!
| name | count |
|---|---|
| Franz-Josef Hambsch | 8090 |
| Staszek Zola | 816 |
| Agnieszka Gurgul | 799 |
| Agata Wozniak | 275 |
| Sebastian Kurowski | 194 |
Clear skies!
Your BHTOM Team
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