TNS Astronomical Transient Report No. 257237 [ 2025TNSTR2020....1C ]
Date Received (UTC): 2025-05-29 14:17:18
Date made public:
Sender: Flavio Castellani
Reporting Group: None Discovery Data Source: None
Flavio Castellani report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025mlk
Discoverer internal name: OMB-PNV28
Coordinates (J2000): RA = 09:55:23.440 (148.847667) DEC = +69:07:55.20 (69.132)
Discovery date: 2025-05-27 22:51:34.000 (JD=2460823.4524769)
Potential host galaxy: M81
Remarks: Flavio Castellani report the discovery by F.Castellani, R.Belligoli and V.Andreoli of a PNV (Mag. 19.6R +-0.20 - USNOB1 catalogue) in the host galaxy M81 at Monte Baldo Observatory, Ferrara di Monte Baldo, Verona, Italy (A99), in the course of Italian Supernovae Search Project using a 0.40m f/7 Dall-Kirkham telescope (+ Moravian G4-9000 KAF unfiltered CCD camera)30*180 co-added images. No stellar source was visible at the position of the transient in our past images including reference image dated 2025/05/18 21:41:31. A confirmation run of 21x180 co-added images was performed on 2025-05-28 22:39:51. The object is present and has grown to magn. 19.2
Photometry
Discovery (first detection):
Discovery date: 2025-05-27 22:51:34.000
Flux: 19.6 ABMag
Filter: Clear-
Instrument: Other
Telescope: Other
Remarks: 0.40m f/7 Dall-Kirkham - Osservatorio Monte Baldo -
Last non-detection:
Last non-detection date: 2025-05-18 21:41:31
Limiting flux: 20.2 ABMag
Filter: Clear-
Instrument: Other
Telescope: Other
Remarks: 0.40m f/7 Dall-Kirkham - Osservatorio Monte Baldo -
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2025mlk
Date Received (UTC): 2025-05-29 14:17:18
Date made public:
Sender: Flavio Castellani
Reporting Group: None Discovery Data Source: None
Flavio Castellani report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025mlk
Discoverer internal name: OMB-PNV28
Coordinates (J2000): RA = 09:55:23.440 (148.847667) DEC = +69:07:55.20 (69.132)
Discovery date: 2025-05-27 22:51:34.000 (JD=2460823.4524769)
Potential host galaxy: M81
Remarks: Flavio Castellani report the discovery by F.Castellani, R.Belligoli and V.Andreoli of a PNV (Mag. 19.6R +-0.20 - USNOB1 catalogue) in the host galaxy M81 at Monte Baldo Observatory, Ferrara di Monte Baldo, Verona, Italy (A99), in the course of Italian Supernovae Search Project using a 0.40m f/7 Dall-Kirkham telescope (+ Moravian G4-9000 KAF unfiltered CCD camera)30*180 co-added images. No stellar source was visible at the position of the transient in our past images including reference image dated 2025/05/18 21:41:31. A confirmation run of 21x180 co-added images was performed on 2025-05-28 22:39:51. The object is present and has grown to magn. 19.2
Photometry
Discovery (first detection):
Discovery date: 2025-05-27 22:51:34.000
Flux: 19.6 ABMag
Filter: Clear-
Instrument: Other
Telescope: Other
Remarks: 0.40m f/7 Dall-Kirkham - Osservatorio Monte Baldo -
Last non-detection:
Last non-detection date: 2025-05-18 21:41:31
Limiting flux: 20.2 ABMag
Filter: Clear-
Instrument: Other
Telescope: Other
Remarks: 0.40m f/7 Dall-Kirkham - Osservatorio Monte Baldo -
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2025mlk