Filipp Romanov
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filipp-romanov.bsky.social
Filipp Romanov
@filipp-romanov.bsky.social
Amateur astronomer, discoverer of 82 variable stars, 10 planetary nebulae candidates (+5 co-dis.), 3 supernovae, 4 wide binaries (pairs of stars), 3 novae in M31; 4 transients (possible supernovae) and 11 asteroids.Author and co-author of scientific papers
Pinned
On 2025-08-17 I discovered supernova SN 2025umq using the remote telescope T59 of iTelescope.Net. Confirmed as Type Ia supernova at z = 0.159

TNS www.wis-tns.org/object/2025umq
ATel #17361 www.astronomerstelegram.org?read=17361

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour
I found a possible bright (likely one of the brightest) missed supernova in ESO 157-27 galaxy on the POSS-II F plate taken on 1994-12-28.

I measured magnitude R = 12.3.

Now this is AT 1994au www.wis-tns.org/object/1994au (in the TNS).

@astrodave.bsky.social
@davidbflower.bsky.social
#astronomy
November 15, 2025 at 12:16 PM
I measured the magnitude of the interstellar comet 3I/ATLAS from my photos (July 17th - October 2nd) using Tycho Tracker v.12.6 software. I used the ATLAS catalog and 10000 km aperture radius.
I am attaching the light curve.
#astronomy #interstellarcomet #comet3I #comet3IATLAS
@astrodave.bsky.social
November 8, 2025 at 8:54 PM
I observed comet C/2013 C2 (TENAGRA) during its outburst in brightness at high heliocentric distance on 2025-10-12 near 20:45 UT, using 2.0-m f/10 Liverpool Telescope.

My data were published in the CBET 5619 www.cbat.eps.harvard.edu/iau/cbet/005...

@astrodave.bsky.social
@davidbflower.bsky.social
October 13, 2025 at 2:24 PM
Reposted by Filipp Romanov
On April 7, 2025, asteroid 2023 RY151 discovered by my son Filipp Romanov @filipp-romanov.bsky.social was named (773906) Larisaromanova after me: information is published wgsbn-iau.org/files/Bullet... in the WGSBN Bulletin 5, #5, p.27
Source of image: ssd.jpl.nasa.gov/tools/sbdb_l...
#WorldSpaceWeek
October 9, 2025 at 12:23 PM
Reposted by Filipp Romanov
Astronomy is becoming an online affair. A recent find shows what’s possible, as devoted amateur astronomer @filipp-romanov.bsky.social discovered a supernova in a remote galaxy.

Here’s our latest post on the find and how he did it for @universetoday.com - www.universetoday.com/articles/ded...
Dedicated Amateur Discovers Supernova in Remote Galaxy
Astronomy is increasingly becoming an online affair. Recent discoveries of interstellar Comet 3I/ATLAS and R2 SWAN highlighted this fact, when both were first discussed on message boards and verified ...
www.universetoday.com
October 8, 2025 at 2:20 PM
My best photos of the comet C/2023 A3 (Tsuchinshan-ATLAS) above the Sea of Japan (imaged last year using my Canon EOS 60D camera, from Yuzhno-Morskoy, Nakhodka):

1 - 2024-10-20;
2 - 2024-10-16;
3 - 2024-10-13;
4 - 2024-10-03.

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour
October 8, 2025 at 12:26 PM
On 2025-10-03, remotely at the 2-m Liverpool Telescope, I confirmed new distant object CDFZQD2 = 2025 SB57, my astrometric data were published in the discovery MPEC: minorplanetcenter.net/mpec/K25/K25...

Image: stacked 8x60 sec. with Sloan r' filter.

#astronomy #space
@astrodave.bsky.social
October 6, 2025 at 9:17 AM
On 2025-10-02 I observed interstellar comet 3I/ATLAS (before passing Mars) at remote 0.25-m f/3.8 reflector T75 iTelescope.Net, Chile. 1st photo is in color.

I also observed it on September 27th - Autumn Astronomy Day.

@astrodave.bsky.social
@davidbflower.bsky.social
#PhotoHour #StormHour #comet3I
October 3, 2025 at 2:15 PM
On 2025-10-02, remotely at the 2-m Liverpool Telescope, I confirmed minorplanetcenter.net/mpec/K25/K25... near-Earth asteroid 2025 TF = C15KM95 which had previously approached at a distance of several hundred kilometers from the Earth's surface. Image: stacked 16x60 sec.

#asteroid #2025TF #C15KM95
October 2, 2025 at 1:02 PM
Reposted by Filipp Romanov
I am one of the co-authors of the scientific paper "Constraints on the evolution of the Triton atmosphere from occultations: 1989–2022" published doi.org/10.1051/0004... in 2024 in Astronomy & Astrophysics (A&A).
News article about this paper astrobiology.com/2024/12/trit...
#AstronomyDay #astronomy
Constraints on the evolution of the Triton atmosphere from occultations: 1989–2022 | Astronomy & Astrophysics (A&A)
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
doi.org
September 27, 2025 at 9:52 AM
My new observations:

Interstellar comet 3I/ATLAS on Sep 18 at iTelescope.Net T72;
Moon, Venus and Regulus on Sep 19;
Potentially Hazardous Asteroid 2025 FA22 + confirmed NEOCP object P22eOKK on Sep 21 at the Liverpool Telescope.
@astrodave.bsky.social
@davidbflower.bsky.social
#PhotoHour #StormHour
September 23, 2025 at 2:12 PM
On 2025-09-13 I confirmed new bright comet SWAN25B remotely at iTelescope.Net T59 (0.51-m f/6.8
reflector) in Australia.

I measured: coma +8.9 mag. 2 arcmin., tail=18 arcmin, PA=112°

Images: 3x10s. (RGB), 60s. (Lum)

@astrodave.bsky.social
@davidbflower.bsky.social
#PhotoHour #StormHour #astronomy
September 13, 2025 at 4:07 PM
On 2025-09-06 I confirmed comet A11rZww = C/2025 R1 (ATLAS) remotely using 0.61-m f/6.5 reflector T24 of iTelescope.Net in Auberry, California, USA. My astrometric data: minorplanetcenter.net/mpec/K25/K25...

On 2025-09-11 I observed interstellar comet 3I/ATLAS at 0.51-m f/6.8 telescope T72 in Chile
September 13, 2025 at 3:54 PM
I photographed the total lunar eclipse on September 8, 2025 in Yuzhno-Morskoy, Nakhodka, using my Canon EOS 60D camera (with 135mm lens), I made this collage from the photographs.

@astrodave.bsky.social
@davidbflower.bsky.social
#PhotoHour #StormHour #eclipse #lunareclipse #totaleclipse #astronomy
September 8, 2025 at 11:55 AM
My timelapse video of total lunar eclipse on 2022-11-08, from Yuzhno-Morskoy, Nakhodka.

Canon 60D + 150-mm telescope.

My video of occultation of Uranus by the Moon during this lunar eclipse: youtu.be/le_yr79KlHw

@astrodave.bsky.social
@davidbflower.bsky.social
#PhotoHour #StormHour #lunareclipse
September 6, 2025 at 10:01 AM
I observed:

Interstellar comet 3I/ATLAS at the Liverpool Telescope: 2025-09-03 (with the anti-solar tail), stacked 4x60 sec.

Near-Earth asteroid (2100) Ra-Shalom at the Burke-Gaffney Observatory on 2025-08-19.

NEA 1998 SH2 at T59 of iTelescope.Net: on 2025-09-04

@astrodave.bsky.social #PhotoHour
September 5, 2025 at 3:18 PM
On 2025-08-17 I discovered supernova SN 2025umq using the remote telescope T59 of iTelescope.Net. Confirmed as Type Ia supernova at z = 0.159

TNS www.wis-tns.org/object/2025umq
ATel #17361 www.astronomerstelegram.org?read=17361

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour
August 28, 2025 at 5:49 PM
My photos for August 20, 2025 taken from Yuzhno-Morskoy, Nakhodka:

Moon, Jupiter, Venus, Pollux, Castor, Mercury (marked with an arrow);
Moon, Jupiter, Venus;
part of the solar halo (under the roof);
tall ship (sailing) Nadezhda - in the Sea of ​​Japan.

@astrodave.bsky.social
#PhotoHour #StormHour
August 23, 2025 at 6:49 PM
On Aug 17, 2025 (when it was 16 years since I started studying astronomy on my own) I observed at the Liverpool Telescope:
Interstellar comet 3I/ATLAS
Near-Earth asteroid 2025 PM youtube.com/shorts/xfPpE...
Supernova SN 2025roy

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour
August 18, 2025 at 12:56 PM
I continue to observe the interstellar comet 3I/ATLAS using remote telescopes: Liverpool Telescope and iTelescope.Net T59, T11, T24.

My astrometry
minorplanetcenter.net/mpec/K25/K25...
minorplanetcenter.net/mpec/K25/K25...

#comet3I #comet3IATLAS #interstellarcomet #PhotoHour
@astrodave.bsky.social
August 16, 2025 at 12:20 PM
On the morning of August 12, 2025, using my Canon EOS 60D camera, in Yuzhno-Morskoy, Nakhodka, I photographed the #conjunction of Venus and Jupiter, and a bright #meteor was imaged next to them during the #Perseids.

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour #astronomy
August 12, 2025 at 1:20 PM
On 2025-08-04 I observed supernova SN 2025rbs in NGC 7331 galaxy remotely using 0.51-m telescope T11 of iTelescope.Net in Beryl Junction, Utah, USA.

I measured the magnitudes: 12.2 V, 12.75 B.
Images: 3x300s., Rc+V+B

@astrodave.bsky.social @davidbflower.bsky.social
#PhotoHour #StormHour #astronomy
August 4, 2025 at 3:20 PM
My new observations using 0.61-m telescope of the Burke-Gaffney Observatory @bgo.observatory.social.ap.brid.gy‬:

Potentially Hazardous Asteroid (35107) = 1991 VH (img.2), my astrometry www.minorplanetcenter.net/mpec/K25/K25...

Interstellar comet 3I/ATLAS (img.1)
#comet3IATLAS #astronomy #PhotoHour
August 4, 2025 at 1:28 PM
On 2024-06-20 and on 2025-07-18 the T CrB spectra were obtained at the Liverpool Telescope: exposures of 100 sec. The H-alpha line increased in flux.
Spectra in the AAVSO's Spectroscopic Database, AVSpec:
apps.aavso.org/avspec/obs/1...
apps.aavso.org/avspec/obs/1...
#astronomy #TCrB #AAVSO #spectrum
August 3, 2025 at 12:27 PM
I observed interstellar comet 3I/ATLAS remotely at 2-m Liverpool Telescope (image 1) and at 0.3-m T33 (image 2) of iTelescope.Net in Australia.

My astrometric data:
minorplanetcenter.net/mpec/K25/K25...
minorplanetcenter.net/mpec/K25/K25...

@astrodave.bsky.social @davidbflower.bsky.social
#comet3I
July 30, 2025 at 5:58 PM