#swan25f — Public Fediverse posts

Uno de los mejores atardeceres 🌇 que he visto en #Laraquete , a falta del ☄️ #Swan25f :blobaww: :blobugh:

#astronomía #espazo #space #cometa #swan25f #Weltraum #sol #universo #ciencias #observatorio

https://www.tempo.pt/noticias/astronomia/aproximacao-do-cometa-da-pascoa-os-astronomos-revelam-que-podera-ser-visivel-a-olho-nu-a-partir-deste-dia.html

A comet 💫 has been discovered, temporarily named SWAN25F and it is visible to the east before sunrise.

https://www.cbc.ca/news/science/comet-swan25f-1.7503849
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Une comète 💫 a été découverte, nommée temporairement SWAN25F et elle est visible à l’est avant l’aube.

https://blogs.futura-sciences.com/feldmann/2025/04/09/swan25f-une-comete-pour-les-leve-tot/

#Comet #Comète #SWAN25F

Ein neuer Komet am Himmel. In Daten der Sonnensonde SOHO entdeckter Komet SWAN25F ist am Morgenhimmel sichtbar. #Komet #SWAN25F #astronomie
https://www.scinexx.de/news/kosmos/ein-neuer-komet-am-himmel/

Der bisher notdürftig als #SWAN25F geführte Komet - hier gestern früh von Christoph Gerhard: https://www.facebook.com/photo/?fbid=9616963628419224 - hat in http://www.cbat.eps.harvard.edu/iau/cbet/005500/CBET005538.txt endlich eine offizielle Bezeichnung erhalten, die zufälligerweise recht ähnlich ist: C/2025 F2 (SWAN). Der Sonne am nächsten kommt er am 1. Mai in 1/3 Astronomischer Einheit Abstand: Dann sollte er auch sein Helligkeitsmaximum erreichen, vielleicht 3.6 mag. - aber das ist sehr unsicher wegen der konfusen Lichtkurve bisher. Und nur 19° Elongation.

And so the comet formerly known as #SWAN25F has finally received an official designation: C/2025 F2 (SWAN). The respective CBET http://www.cbat.eps.harvard.edu/iau/cbet/005500/CBET005538.txt is just out: perihelion will be on 1 May at 1/3 au, coinciding with a predicted peak magnitude of 3.6 - albeit at an elongation of only 19° and "highly uncertain" as the brightness behavior so far isn't well understood and "[o]bservers have commented on a clear outburst in brightness having occurred around April 5." Image: https://www.facebook.com/photo/?fbid=9616963628419224

Here #comet #SWAN25F images taken today early morning 8th April from my remote observatory at Spain. SWAN25F is quite low in the morning sky near Pegasus square upper area between stars Alpheratz and Scheat. It's magnitude is about 9, tail visible almost one degree toward PA 300deg and coma diameter is 5'. Animation 18x30sec in the link below shows also moving tail details.
More info here https://www.taivaanvahti.fi/observations/show/133765

Here #comet #SWAN25F images taken today early morning 8th April from my remote observatory at Spain. SWAN25F is quite low in the morning sky near Pegasus square upper area between stars Alpheratz and Scheat. It's magnitude is about 9, tail visible almost one degree toward PA 300deg and coma diameter is 5'. Animation 18x30sec in the link below shows also moving tail details.
More info here https://www.taivaanvahti.fi/observations/show/133765

Und so sah der Komet #SWAN25F - der weiterhin keine richtige Nummer und keinen Namen hat - heute früh für eine Superzoom-Kamera auf einem Stativ aus, mit 3.2 Sekunden Belichtungszeit: Bilder aus Bochum heute gegen 5 Uhr MESZ. Der Himmel war so aufgehellt bzw. die Transparenz so schlecht in der geringen Höhe über dem Horizont, dass weit und breit für das bloße Auge kein einziger Stern zu sehen war ... aber der Komet war hell und kondensiert genug für die Kamera: mehr in https://scicomm.xyz/@cosmos4u/114298323637614465

Looks like new #comet #SWAN25F is not going to get any above the E horizon before dawn. This is a projected track for the next month using Stellarium & orbital elements from Project Pluto's "Pseudo-MPEC" (https://www.projectpluto.com/swan.htm) View is at start of astronomical twilight.

#Astronomy

The view of comet #SWAN25F - yep, *still* no real number & name - this morning from Bochum, Germany, around 3:00 UTC with a Panasonic Lumix DMC-FZ300 on a tripod: 3.2 seconds at f/3.2 and ISO 3200, 2 seconds at f/2.8 and ISO 3200 and 3.2 seconds at f/2.8 and ISO 1600, resp.; more pictures in the album https://www.facebook.com/dan.fischer.393/posts/pfbid029Wd9jGddhdfffzib5Q8KJ7THiA956Gjgn39SqJSpo1TjfieKjoR4Xn1ivuJRQVVGl (the comet's brightness and high condensation were reminiscent of Tsuchinshan-ATLAS in mid-November 2024 - https://www.facebook.com/dan.fischer.393/posts/pfbid093o71dEo7woaJYh3GzmnUeH1njvYpnZQpN6jCEMUG3hEVwZpep8XLHU3koRWZ4DSl - but the latter was higher in the sky).

A new #comet, #SWAN25F is brightening in the pre-dawn sky. Catch it moving through constellations such as Pegasus and Andromeda. As of early April, Comet SWAN25F has brightened to approximately magnitude 8.0, making it observable with binoculars with great conditions. https://ow.ly/BBPH50VvPTT

LOL, caught the comet without (official) name and number with a bridge camera on a tripod a hour ago: 8th magnitude and high coma condendation made it possible - like with Tsuchinshan-ATLAS in late November, though the latter had bern much higher in the sky. The elevation of #SWAN25F was only a dozen degrees (and the light pollution / sky transparency so bad I couldn't see *any* Pegasus star with the naked eye). Back of camera shot - proper image processing later ...