Orlando ⁂<p>Uno de los mejores atardeceres 🌇 que he visto en <a href="https://mastodon.social/tags/Laraquete" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Laraquete</span></a> , a falta del ☄️ <a href="https://mastodon.social/tags/Swan25f" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Swan25f</span></a> :blobaww: :blobugh:</p>
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#swan25f
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Edwin G. :mapleleafroundel:<p>A comet 💫 has been discovered, temporarily named SWAN25F and it is visible to the east before sunrise. </p><p><a href="https://www.cbc.ca/news/science/comet-swan25f-1.7503849" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">cbc.ca/news/science/comet-swan</span><span class="invisible">25f-1.7503849</span></a><br>- - -<br>Une comète 💫 a été découverte, nommée temporairement SWAN25F et elle est visible à l’est avant l’aube.</p><p><a href="https://blogs.futura-sciences.com/feldmann/2025/04/09/swan25f-une-comete-pour-les-leve-tot/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">blogs.futura-sciences.com/feld</span><span class="invisible">mann/2025/04/09/swan25f-une-comete-pour-les-leve-tot/</span></a></p><p><a href="https://mstdn.moimeme.ca/tags/Comet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Comet</span></a> <a href="https://mstdn.moimeme.ca/tags/Com%C3%A8te" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Comète</span></a> <a href="https://mstdn.moimeme.ca/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a></p>
scinexx - das wissensmagazin<p>Ein neuer Komet am Himmel. In Daten der Sonnensonde SOHO entdeckter Komet SWAN25F ist am Morgenhimmel sichtbar. <a href="https://nrw.social/tags/Komet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Komet</span></a> <a href="https://nrw.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> <a href="https://nrw.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <br><a href="https://www.scinexx.de/news/kosmos/ein-neuer-komet-am-himmel/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">scinexx.de/news/kosmos/ein-neu</span><span class="invisible">er-komet-am-himmel/</span></a></p>
Planetarium Bochum<p>Der bisher notdürftig als <a href="https://mastodon.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> geführte Komet - hier gestern früh von Christoph Gerhard: <a href="https://www.facebook.com/photo/?fbid=9616963628419224" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">facebook.com/photo/?fbid=96169</span><span class="invisible">63628419224</span></a> - hat in <a href="http://www.cbat.eps.harvard.edu/iau/cbet/005500/CBET005538.txt" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">http://www.</span><span class="ellipsis">cbat.eps.harvard.edu/iau/cbet/</span><span class="invisible">005500/CBET005538.txt</span></a> 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.</p>
Daniel Fischer<p>And so the comet formerly known as <a href="https://scicomm.xyz/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> has finally received an official designation: C/2025 F2 (SWAN). The respective CBET <a href="http://www.cbat.eps.harvard.edu/iau/cbet/005500/CBET005538.txt" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">http://www.</span><span class="ellipsis">cbat.eps.harvard.edu/iau/cbet/</span><span class="invisible">005500/CBET005538.txt</span></a> 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: <a href="https://www.facebook.com/photo/?fbid=9616963628419224" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">facebook.com/photo/?fbid=96169</span><span class="invisible">63628419224</span></a></p>
Deutschland<p><a href="https://www.europesays.com/de/15998/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">europesays.com/de/15998/</span><span class="invisible"></span></a> Überraschung am Morgenhimmel: Neuer Komet Swan25F <a href="https://pubeurope.com/tags/Andromeda" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Andromeda</span></a>. <a href="https://pubeurope.com/tags/Astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomie</span></a> <a href="https://pubeurope.com/tags/Deutschland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Deutschland</span></a> <a href="https://pubeurope.com/tags/Entdeckung" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Entdeckung</span></a> <a href="https://pubeurope.com/tags/Germany" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Germany</span></a> <a href="https://pubeurope.com/tags/Komet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Komet</span></a> <a href="https://pubeurope.com/tags/Kometen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Kometen</span></a> <a href="https://pubeurope.com/tags/Pegasus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Pegasus</span></a> <a href="https://pubeurope.com/tags/Schweifstern" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Schweifstern</span></a> <a href="https://pubeurope.com/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://pubeurope.com/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a>&Technology <a href="https://pubeurope.com/tags/SOHO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SOHO</span></a> <a href="https://pubeurope.com/tags/SWAN" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN</span></a> <a href="https://pubeurope.com/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> <a href="https://pubeurope.com/tags/Technik" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Technik</span></a> <a href="https://pubeurope.com/tags/Technology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Technology</span></a> <a href="https://pubeurope.com/tags/Wissenschaft" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Wissenschaft</span></a> <a href="https://pubeurope.com/tags/Wissenschaft" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Wissenschaft</span></a>&Technik</p>
Jorma Ryske<p>Here <a href="https://astrodon.social/tags/comet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>comet</span></a> <a href="https://astrodon.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> 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.<br>More info here <a href="https://www.taivaanvahti.fi/observations/show/133765" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">taivaanvahti.fi/observations/s</span><span class="invisible">how/133765</span></a></p>
Jorma Ryske<p>Here <a href="https://astrodon.social/tags/comet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>comet</span></a> <a href="https://astrodon.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> 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.<br>More info here <a href="https://www.taivaanvahti.fi/observations/show/133765" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">taivaanvahti.fi/observations/s</span><span class="invisible">how/133765</span></a></p>
Planetarium Bochum<p>Und so sah der Komet <a href="https://mastodon.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> - 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 <a href="https://scicomm.xyz/@cosmos4u/114298323637614465" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">scicomm.xyz/@cosmos4u/11429832</span><span class="invisible">3637614465</span></a></p>
Dr. John Barentine FRAS<p>Looks like new <a href="https://astrodon.social/tags/comet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>comet</span></a> <a href="https://astrodon.social/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> 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" (<a href="https://www.projectpluto.com/swan.htm" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">projectpluto.com/swan.htm</span><span class="invisible"></span></a>) View is at start of astronomical twilight.</p><p><a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a></p>
Daniel Fischer<p>The view of comet <a href="https://scicomm.xyz/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> - 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 <a href="https://www.facebook.com/dan.fischer.393/posts/pfbid029Wd9jGddhdfffzib5Q8KJ7THiA956Gjgn39SqJSpo1TjfieKjoR4Xn1ivuJRQVVGl" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">facebook.com/dan.fischer.393/p</span><span class="invisible">osts/pfbid029Wd9jGddhdfffzib5Q8KJ7THiA956Gjgn39SqJSpo1TjfieKjoR4Xn1ivuJRQVVGl</span></a> (the comet's brightness and high condensation were reminiscent of Tsuchinshan-ATLAS in mid-November 2024 - <a href="https://www.facebook.com/dan.fischer.393/posts/pfbid093o71dEo7woaJYh3GzmnUeH1njvYpnZQpN6jCEMUG3hEVwZpep8XLHU3koRWZ4DSl" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">facebook.com/dan.fischer.393/p</span><span class="invisible">osts/pfbid093o71dEo7woaJYh3GzmnUeH1njvYpnZQpN6jCEMUG3hEVwZpep8XLHU3koRWZ4DSl</span></a> - but the latter was higher in the sky).</p>
Westport Observatory<p>A new <a href="https://vmst.io/tags/comet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>comet</span></a>, <a href="https://vmst.io/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> 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. <a href="https://ow.ly/BBPH50VvPTT" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ow.ly/BBPH50VvPTT</span><span class="invisible"></span></a></p>
Daniel Fischer<p>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 <a href="https://scicomm.xyz/tags/SWAN25F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SWAN25F</span></a> 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 ...</p>
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