BHTOM Targets for 01 September, 2025
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wyrz...@gmail.com
Sep 1, 2025, 10:45:08 AMSep 1
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Greetings from the BHTOM Automated Newsletter!
As of 2025-09-01 14:43:59.917674+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 |
|---|---|---|---|---|---|---|
| AT2025vjw | 347.25325 | -7.518756 | 18.0 | 173.0 | Unknown | TDE or SLSN 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 |
|---|---|---|---|---|---|---|
| LS I +61 302 | 40.131935 | 61.229332 | 9.2 | 96.0 | Unknown | Be-star with unknown compact companion |
| 4U2206+54 | 331.984320 | 54.518447 | 9.5 | 117.0 | XRB | Be X-ray binary |
| RXJ0441.0+4431 | 70.247207 | 44.530349 | 9.6 | 84.0 | XRB | Be X-ray binary |
| EECep | 332.344808 | 55.756738 | 10.4 | 116.0 | Variable star-other | Long period eclipsing binary with accretion disk, eclipse predicted for October |
| V1413 Aql | 285.945155 | 16.438048 | 10.5 | 121.0 | Symbiotic star | known symbiotic star for regular monitoring |
| TCrB | 239.875676 | 25.920170 | 10.8 | 77.0 | Nova | recurent nova predicted to explode 2024/2025 |
| 2S0114+65 | 19.511240 | 65.291619 | 11.2 | 101.0 | XRB | Supergiant X-ray binary |
| RXJ0146.9+6121 | 26.750885 | 61.356573 | 12.6 | 102.0 | XRB | Be X-ray binary |
| AM_Her | 274.055228 | 49.867989 | 13.4 | 98.0 | CV | Target for joint optical-radio observations |
| KS1947+300 | 297.397850 | 30.208827 | 13.9 | 124.0 | XRB | Be X-ray binary |
| GROJ2058+42 | 314.698071 | 41.776995 | 14.2 | 125.0 | XRB | Be X-ray binary |
| 4U0115+63 | 19.633210 | 63.742520 | 14.4 | 102.0 | XRB | Be X-ray binary |
| BL_Lac | 330.680381 | 42.277772 | 14.8 | 129.0 | BL Lac | famous variable blazar |
| IGRJ21343+4738 | 323.584883 | 47.633391 | 14.8 | 122.0 | XRB | Be X-ray binary |
| Gaia21fji | 315.992250 | 50.244500 | 15.1 | 118.0 | YSO | Optical monitoring of Gaia- and ZTF-alerted candidate eruptive YSOs |
| Gaia22efa | 67.656210 | 35.842100 | 15.3 | 87.0 | YSO | Brightening in candidate YSO. After initial accretion burst the brightness started to rise slowly. |
| SAXJ2103.5+4545 | 315.898792 | 45.751547 | 15.4 | 122.0 | XRB | Be X-ray binary |
| ZTF18abdciiz | 281.649375 | 0.922556 | 15.6 | 121.0 | Unknown | YSO candidate |
| Gaia24ala | 86.808830 | 0.152040 | 16.2 | 74.0 | YSO | Dimming in candidate YSO |
| SN2024afyu | 258.429383 | 7.625256 | 16.4 | 97.0 | SN | Interesting long-term Supernova |
| Gaia22cav | 344.036730 | 58.517780 | 16.7 | 113.0 | YSO | 3 mag outburst in candidate EXOR, waiting for the next outbursts |
| Gaia24bux | 347.418150 | 62.482960 | 17.2 | 109.0 | YSO | Brightening in Gaia and Wise source, possibly new young eruptive star |
| SDSS J013136.44+130331.0 | 22.901854 | 13.058618 | 17.5 | 133.0 | QSO | Candidate for lensed QSO |
| Gaia4323024741104637568 | 292.501025 | 17.933682 | 17.7 | 126.0 | Unknown | Possibly eruptive YSO which is approaching to the quiescence |
| Gaia2204674337304419072 | 334.773114 | 61.604365 | 17.7 | 110.0 | Unknown | Possibly eruptive YSO which is approaching to the quiescence |
| name | ra | dec | mag_last | sun_separation | classification | description |
|---|---|---|---|---|---|---|
| T Ori | 83.960201 | -5.476368 | 11.3 | 77.0 | YSO | Herbig AeBe star, YSO |
| AT 2025nlr | 227.013640 | -40.141550 | 11.5 | 78.0 | Nova | Astro-COLIBRI target |
| V1787 Ori | 84.538767 | -6.821276 | 12.9 | 77.0 | YSO | Herbig Ae/Be Star |
| Mkn590 | 33.639835 | -0.766717 | 13.2 | 126.0 | QSO | Flaring quasar |
| TT Ori | 83.819730 | -4.762387 | 14.0 | 77.0 | YSO | eruptive variable, Orion type |
| GaiaDR3_4078221191620409216 | 281.641570 | -23.578681 | 14.1 | 122.0 | Microlensing Event | microlensing candidate ZTF25abcwzci, KATS25Q005 |
| mrk1018 | 31.566619 | -0.291455 | 14.2 | 128.0 | AGN | changinglook AGN |
| IRAS 23226-3843 | 351.350833 | -38.446978 | 14.4 | 148.0 | AGN | changinglook AGN |
| Gaia19dbf | 178.699417 | -64.491850 | 14.5 | 74.0 | Unknown | Possibly a YSO |
| Gaia24ccy | 243.402110 | -25.063310 | 14.5 | 87.0 | YSO | known YSO brightens by 2 mag |
| V416Ori | 83.838583 | -5.703439 | 14.6 | 78.0 | YSO | variable YSO |
| ASASSN-25cd | 277.969917 | -28.807539 | 15.2 | 118.0 | Unknown | A Deep, Ongoing, Dipping Event |
| SN2025pht | 70.370254 | -2.865447 | 15.2 | 90.0 | SN | SN IIP, ASASSN-25cw |
| Gaia23bsf | 276.583080 | -14.036970 | 15.3 | 117.0 | Unknown | Star getting brighter very slowly |
| HE0413_4031 | 63.810269 | -40.394754 | 15.8 | 100.0 | QSO | Long term variable quasar for monitoring |
| PKS0454-234 | 74.263250 | -23.414450 | 15.9 | 90.0 | QSO | long time monitoring for ROTUZ team |
| Gaia24amo | 249.148921 | -53.749919 | 16.1 | 96.0 | Microlensing Event | candidate microlensing event, with the second peak |
| 1RXS_J173546.9-302859 | 263.946400 | -30.482900 | 16.3 | 106.0 | Unknown | Possible X-ray transient from SVOM |
| PMNJ0730-6602 | 112.706495 | -66.038578 | 16.4 | 82.0 | AGN | IAUZ Target |
| CTS_C30.10 | 71.833281 | -45.627319 | 16.5 | 95.0 | QSO | Long term variable quasar for monitoring |
| HE0435-4312 | 69.299139 | -43.101189 | 16.8 | 96.0 | QSO | Long term variable quasar for monitoring |
| AT2024zkr | 28.595650 | -5.997339 | 16.8 | 132.0 | AGN | BFF candidate, spectrum shows HeII and NIII, ePESSTO+ target |
| Gaia24csq | 286.710270 | -26.939590 | 16.8 | 126.0 | Unknown | potential slowly rising microlensing event |
| V1725 Sco | 256.693920 | -35.468560 | 17.2 | 100.0 | Nova | Astro-COLIBRI target, nova, still on-going |
| AT2025rwt | 258.659221 | -40.036200 | 17.4 | 102.0 | Unknown | possible galactic nova |
| Gaia23cnm | 285.322920 | -18.717130 | 17.4 | 126.0 | Unknown | slow and long rise, possible microlensing or YSO |
| 4FGL J1603.8-4903 | 240.966507 | -49.061699 | 17.5 | 90.0 | Unknown | Astro-COLIBRI target |
| AT2023xbu | 58.991412 | -16.412656 | 17.8 | 103.0 | AGN | candidate repeating TDE, other name ZTF22abveoak, ePESSTO target |
| ZTF20abendxc | 281.224708 | -8.538111 | 17.8 | 122.0 | YSO | Possibly eruptive YSO |
Last week's total of images processed: 5297 (4860 with success).
Last week's targets observed:
| camera | target_names |
|---|---|
| AZT-8_C4-16000 | Gaia24amv, Gaia18dom, Gaia17cuh, Gaia23bcv, Gaia18acq |
| Adonis_G2-1600 | Gaia24ayd, TCrB, Gaia24azc, Gaia24azi, LS I +61 302, AM_Her, TabbysStar, Gaia24dfv |
| AsiagoAO-0.67_G4-16000 | SN2025pht |
| EEye_QHY268M | AT2024kwu, Gaia24csq, Gaia24ctf, Gaia24aup, Gaia23cnm, AT2025mau |
| Flarestar-MPC171_G2-1600 | LS I +61 302, TCrB, Gaia22efa |
| LCOGT-CTIO-1m_4K | 3I_ATLAS-lsc-1m0a-2025-08-24-60911.048365, 3I_ATLAS-lsc-1m0a-2025-08-13-60900.9961784, 3I_ATLAS-lsc-1m0a-2025-08-25-60912.0207965, 3I_ATLAS-lsc-1m0a-2025-08-17-60904.9690925, 3I_ATLAS-lsc-1m0a-2025-08-13-60900.0860689, 3I_ATLAS-lsc-1m0a-2025-08-12-60899.0177828, 3I_ATLAS-lsc-1m0a-2025-08-20-60907.0670389, 3I_ATLAS-lsc-1m0a-2025-08-15-60902.0334412, 3I_ATLAS-lsc-1m0a-2025-08-08-60895.0402101, 3I_ATLAS-lsc-1m0a-2025-08-17-60904.0168627, 3I_ATLAS-lsc-1m0a-2025-08-16-60903.0919304 |
| LCOGT-CTIO-40cm_QHY600M | 3I_ATLAS-lsc-0m4a-2025-08-16-60903.9721839, 3I_ATLAS-lsc-0m4a-2025-08-16-60903.0766192, 3I_ATLAS-lsc-0m4a-2025-08-13-60900.0544003, 3I_ATLAS-lsc-0m4a-2025-08-24-60911.9867424, 3I_ATLAS-lsc-0m4a-2025-08-14-60901.9780556, 3I_ATLAS-lsc-0m4a-2025-08-09-60896.9698887, 3I_ATLAS-lsc-0m4a-2025-08-20-60907.0252625, 3I_ATLAS-lsc-0m4a-2025-08-26-60913.9750735, 3I_ATLAS-lsc-0m4a-2025-08-11-60898.9703232, 3I_ATLAS-lsc-0m4a-2025-08-10-60897.9664905, 3I_ATLAS-lsc-0m4a-2025-08-08-60895.9699273, 3I_ATLAS-lsc-0m4a-2025-08-13-60900.971217, 3I_ATLAS-lsc-0m4a-2025-08-07-60894.9939472 |
| LCOGT-HO-40cm_QHY600M | 3I_ATLAS-ogg-0m4b-2025-08-18-60905.2614453, 3I_ATLAS-ogg-0m4b-2025-08-19-60906.2509731, 3I_ATLAS-ogg-0m4b-2025-08-15-60902.2412025, 3I_ATLAS-ogg-0m4b-2025-08-17-60904.2422802, 3I_ATLAS-ogg-0m4b-2025-08-23-60910.2402222, 3I_ATLAS-ogg-0m4b-2025-08-09-60896.244422, 3I_ATLAS-ogg-0m4b-2025-08-01-60888.2574627, 3I_ATLAS-ogg-0m4b-2025-08-26-60913.2392954, 3I_ATLAS-ogg-0m4b-2025-08-25-60912.2352887, 3I_ATLAS-ogg-0m4b-2025-08-08-60895.2449297, 3I_ATLAS-ogg-0m4b-2025-08-11-60898.245611, 3I_ATLAS-ogg-0m4c-2025-08-22-60909.2460802, 3I_ATLAS-ogg-0m4b-2025-08-20-60907.2383343, 3I_ATLAS-ogg-0m4b-2025-08-24-60911.2358854, 3I_ATLAS-ogg-0m4c-2025-08-16-60903.2441332, 3I_ATLAS-ogg-0m4c-2025-08-14-60901.2454629, 3I_ATLAS-ogg-0m4b-2025-08-13-60900.2423373, 3I_ATLAS-ogg-0m4b-2025-08-27-60914.2381888, 3I_ATLAS-ogg-0m4b-2025-08-12-60899.2428617, 3I_ATLAS-ogg-0m4b-2025-08-10-60897.2479727, 3I_ATLAS-ogg-0m4b-2025-08-26-60913.2346438 |
| LCOGT-SAAO-1m_4K | 3I_ATLAS-cpt-1m0a-2025-08-11-60898.7568722, 3I_ATLAS-cpt-1m0a-2025-08-24-60911.7436315, 3I_ATLAS-cpt-1m0a-2025-08-12-60899.7113958, 3I_ATLAS-cpt-1m0a-2025-08-18-60905.7464535, 3I_ATLAS-cpt-1m0a-2025-08-19-60906.7501174, Gaia24amo, 3I_ATLAS-cpt-1m0a-2025-08-10-60897.726269, 3I_ATLAS-cpt-1m0a-2025-08-17-60904.7922769 |
| LCOGT-SAAO-40cm_QHY600M | 3I_ATLAS-cpt-0m4a-2025-08-12-60899.7154944, 3I_ATLAS-cpt-0m4a-2025-08-13-60900.7723909, 3I_ATLAS-cpt-0m4a-2025-08-17-60904.7133789, 3I_ATLAS-cpt-0m4a-2025-08-11-60898.7146378, 3I_ATLAS-cpt-0m4a-2025-08-21-60908.7337651, 3I_ATLAS-cpt-0m4a-2025-08-19-60906.7179332, 3I_ATLAS-cpt-0m4a-2025-08-24-60911.7204098, 3I_ATLAS-cpt-0m4a-2025-08-10-60897.7145573, 3I_ATLAS-cpt-0m4a-2025-08-18-60905.7231654 |
| LCOGT-SS-1m_4K | 3I_ATLAS-coj-1m0a-2025-08-24-60911.4177038, 3I_ATLAS-coj-1m0a-2025-08-12-60899.4100259, 3I_ATLAS-coj-1m0a-2025-08-15-60902.3902422, 3I_ATLAS-coj-1m0a-2025-08-17-60904.454787, Gaia24amo, 3I_ATLAS-coj-1m0a-2025-08-18-60905.450744, 3I_ATLAS-coj-1m0a-2025-08-13-60900.4267215 |
| LCOGT-SS-40cm_QHY600M | 3I_ATLAS-coj-0m4a-2025-08-18-60905.4306527, 3I_ATLAS-coj-0m4a-2025-08-12-60899.4010363, 3I_ATLAS-coj-0m4a-2025-08-17-60904.4335657, 3I_ATLAS-coj-0m4a-2025-08-26-60913.3607951, 3I_ATLAS-coj-0m4b-2025-08-19-60906.3805047, 3I_ATLAS-coj-0m4a-2025-08-11-60898.4184041, 3I_ATLAS-coj-0m4a-2025-08-14-60901.4957448, 3I_ATLAS-coj-0m4a-2025-08-27-60914.4442878, 3I_ATLAS-coj-0m4b-2025-08-22-60909.4523034, 3I_ATLAS-coj-0m4b-2025-08-13-60900.4215817 |
| LW_Seestar-S50 | BL_Lac |
| OAUJ-CDK500_F42 | EECep |
| OAUJ-CDK500_U47 | Gaia24ayd, AT2025nsa, NGC5683-Seyfert, EECep, AT2025mau, Gaia21fji, Gaia23dqt |
| PROMPT-MO-1_Apogee | Gaia20agb, ASASSN-24fw, Gaia22alz |
| PROMPT6_FLI | ASASSN-24fw |
| SOAB_ZWO-ASI2600MM | ZTF18aarippg, Gaia24bux, SN2025bof, AT2024kwu, TCrB, AM_Her, GROJ2058+42, SN2024afyu, LS I +61 302, KS1947+300, Gaia4323024741104637568, Gaia24dfc, Gaia21drn, AT2025oas, Mkn590, Gaia21fji, SAXJ2103.5+4545, mrk1018 |
| SUTO-Otivar_ASI1600MM | IGRJ06074+2205, TCrB, Gaia24dov |
| Slooh-AU_FLI-KAF-16803 | 1RXS_J173546.9-302859, CD-43_14304, AT2025ozk |
| Slooh-CL_FLI-KAF-16803 | AT2025asm, Gaia24dgn, AT2025nwy, AT2025mlr, AT2025ozk |
| T100_SI1100 | 3I_ATLAS-TUG100-2025-07-11-60867.79162302, 3I_ATLAS-TUG100-2025-07-11-60867.88402751, 3I_ATLAS-TUG100-2025-07-11-60867.95696824 |
| UZPW50_Chile_QHY268PRO | 3I_ATLAS-UZO-0.5m-mock_target_UZO, AR_Pav, 3I_ATLAS-UZO-0.5m-mock_target_UZO_50 |
| UwB_SBIG-4040 | TCrB, GROJ2058+42, KS1947+300, AM_Her, V1413 Aql |
| ZAO_G2-1600 | LS I +61 302 |
Last week's fits uploads score (sorted by count)
| observatory-user | count |
|---|---|
| Staszek Zola (OAUJ-CDK500_F42) | 1876 |
| Staszek Zola (OAUJ-CDK500_U47) | 1681 |
| Fraser Gillan (UZPW50_Chile_QHY268PRO) | 471 |
| Charles Galdies (ZAO_G2-1600) | 258 |
| Sebastian Kurowski (SOAB_ZWO-ASI2600MM) | 169 |
| Fraser Gillan (LCOGT-HO-40cm_QHY600M) | 105 |
| Yauheni Stsefanenka (OAUJ-CDK500_U47) | 80 |
| Sjoerd Dufoer (EEye_QHY268M) | 68 |
| Fraser Gillan (LCOGT-CTIO-40cm_QHY600M) | 65 |
| Nicholas Rattenbury (Slooh-CL_FLI-KAF-16803) | 57 |
| Fraser Gillan (LCOGT-CTIO-1m_4K) | 55 |
| Fraser Gillan (LCOGT-SS-40cm_QHY600M) | 50 |
| Fraser Gillan (LCOGT-SAAO-40cm_QHY600M) | 45 |
| Nicholas Rattenbury (Slooh-AU_FLI-KAF-16803) | 38 |
| Franky Dubois (Adonis_G2-1600) | 35 |
| Fraser Gillan (LCOGT-SAAO-1m_4K) | 35 |
| Fraser Gillan (LCOGT-SS-1m_4K) | 30 |
| Jacek Drazkowski (LW_Seestar-S50) | 27 |
| Stephen M. Brincat (Flarestar-MPC171_G2-1600) | 24 |
| Zbigniew Grabowski (LW_Seestar-S50) | 18 |
| Staszek Zola (PROMPT-MO-1_Apogee) | 18 |
| Adam Popowicz (SUTO-Otivar_ASI1600MM) | 16 |
| Michal Zejmo (UZPW50_Chile_QHY268PRO) | 15 |
| Wojciech Burzyński (UwB_SBIG-4040) | 15 |
| Dariia Rusanova (AZT-8_C4-16000) | 12 |
| Staszek Zola (PROMPT6_FLI) | 8 |
| Fraser Gillan (T100_SI1100) | 7 |
| Mauritz Wicker (LCOGT-SS-1m_4K) | 6 |
| Andrea Reguitti (AsiagoAO-0.67_G4-16000) | 5 |
| Marek Nikolajuk (UwB_SBIG-4040) | 3 |
| Mauritz Wicker (LCOGT-SAAO-1m_4K) | 3 |
| Lukasz Wyrzykowski (UZPW50_Chile_QHY268PRO) | 2 |
Top 5 data uploaders!
| name | count |
|---|---|
| Staszek Zola | 3583 |
| Fraser Gillan | 863 |
| Charles Galdies | 258 |
| Sebastian Kurowski | 169 |
| Nicholas Rattenbury | 95 |
Clear skies!
Your BHTOM Team
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