365 days & 365 posted comets later I will end the #bskycometography . It was fun, a bit of work & sometimes a challenge to post it daily. I won't stop completely, but won't post daily ☄️ anymore. Probably I'll pick out some special ones, maybe weekly, let's see.

Anyway, I hope you enjoyed it.
☄️🔭

Image of comet C/1989 V1 (Aarseth-Brewington) of 1989 Dec 20, by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=8375

#bskycometography no. 365

C/1989 W1 (Aarseth-Brewington)

1989 Nov 16: Discovered by K. B. Aarseth (Norway) and H. J. Brewington (USA) at 8.5 mag. Prediscovery images of Sep 1. The comet passed perihelion on Dec 27 and reached 3 mag. It was last finally seen on 1990 Jan 31.
☄️🔭 #CometWatch

Image of Temistocle Zona, http://eugenioomodeo.altervista.org/Zona/temistocleZona.html

#bskycometography no. 364

C/1890 V1 (Zona)

1890 Nov 15: Discovered by T. Zona (Italy) at 8 mag. The comet was well past perihelion (Aug 7 at 2.05 au) and did not become brighter. The comet was last detected on 1891 Jan 13. (No, the image does not show Rasputin...)
☄️🔭 #CometWatch

Comet C/1984 V1 (Levy-Rudenko) on 1985 Feb 18 by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=5553

#bskycometography no. 363

C/1984 V1 (Levy-Rudenko)

1984 Nov 14: Discovered by D. H. Levy (USA) and M. Rudenko (USA) one day later at 9.5 mag. Prediscovery on Nov 13 by Mori (Japan). The comet reached 8 mag around perihelion (Dec 14 at 0.92 au) and was last seen on 1985 May 24.
☄️🔭 #CometWatch

Minoru Honda (left) and Koichiro Tomita in 1977, http://www.skaw.sk/rozhovor-shigeki-murakami.html

#bskycometography no. 362

C/1947 V1 (Honda)

1947 Nov 13: Discovered by M. Honda (Japan) at 9 mag shortly prior passing perihelion on Nov 17 at 0.75 au. The comet was moving quickly into southern skies and was last seen on Dec 19.
☄️🔭 #CometWatch

Discovery story by Sidney van den Berg from Journal of the Royal Astronomical Society of Canada, Vol. 69, p.29, https://articles.adsabs.harvard.edu/pdf/1975JRASC..69...29V

#bskycometography no. 361

C/1974 V1 (van den Bergh)

1974 Nov 12: Discovered by S. van den Bergh (USA) at 17 mag. Perihelion occurred already on Aug 7.77 at 6.02 au. The comet did not become brighter and was last detected on 1976 Dec 26.
☄️🔭 #CometWatch

Situation of comet C/1906 V1 (Thiele) in the solar system at the day of discovery

#bskycometography no. 360

C/1906 V1 (Thiele)

1906 Nov 11: Discovered by H. Thiele (Denmark) visually at 8.5 mag. Perihelion occurred on Nov 21 at 1.21 au with the comet being ~7 mag. Perigee on Nov 28 at 0.63 au. The comet was last detected on 1907 Jan 23. Period ~600 years.
☄️🔭 #CometWatch

Image of Giambattista Donati, http://brunelleschi.imss.fi.it/museum/isim.asp?c=300201, https://commons.wikimedia.org/w/index.php?curid=6587971

#bskycometography no. 359

C/1857 V1 (Donati-van Arsdale)

1857 Nov 10: Discovered by G. B. Donati (Italy) and R. van Arsdale (USA) at 9 mag two days prior perigee at 0.65 au. Perihelion on Nov 19 at 1.01 au. The comet did not become brighter and was last detected on Dec 19.
☄️🔭 #CometWatch

Image of comet C/2013 V4 on 2014 Dec 26, by Roland Fichtl, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=11596

#bskycometography no. 358

C/2013 V4 (Catalina)

2013 Nov 9: Discovered by the Catalina Survey (USA) at 17.5 mag. Prediscovery images of Oct 23 (PANSTARRS) & 31 (Catalina). The comet reached 13-14 mag around perihelion (2015 Oct 6 at 5.17 au). It was last detected on 2018 Aug 6.
☄️🔭 #CometWatch

Image of C/1956 R1 by on 1957 Apr 27 by R. Waterfield, BAA Comet Section, https://britastro.org/cometobs/1956r1/1956r1_19570427_rwaterfield.html

#bskycometography no. 357

C/1956 R1 (Arend-Roland)

1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch

Image of comet C/2018 V1 on 2018 Nov 18, by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=20224

#bskycometography no. 356

C/2018 V1 (Machholz-Fujikawa-Iwamoto)

2018 Nov 7: Disc by D. E. Machholz (visual), S. Fujikawa & M. Iwamoto (Japan) at 10 mag. It's the last visual comet discovery! Perihelion on Dec 3 at 0.39 au w/ 7-8 mag. Last seen on Dec 17, possibly disintegrated.
☄️🔭 #CometWatch

Development of brightness and size of comet 17P/Holmes during the ourburst of 2007 by Naoyuki Kurita, https://stellarscenes.net/comet_e/holmes_change.htm

#bskycometography no. 355

17P/1892 V1 (Holmes)

1892 Nov 6: Disc by E. Holmes (England) at 4 mag while in outburst five months after perihelion (Jun 13 at 2.14 au)! The comet faded slowly while becoming larger and diffuse. 2nd outburst on 1893 Jan 16. P=6.90 y, recovery in 1899.
☄️🔭 #CometWatch

Image of 32P/Comas Sola on 2015 Mar 9, by Roland Fichtl, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=12256

#bskycometography no. 354

32P/1926 V1 (Comas Sola)

1926 Nov 5: Discovered by J. Comas Solá (Spain) at 12 mag. Prediscovery just a few hours earlier by Neujmin (Ukraine). The comet reached about 10-11 mag and passed perihelion on 1927 Mar 22 at 1.77 au. P=8.52 y, recovery in 1935.
☄️🔭 #CometWatch

Image of 161P/Hartley-IRAS on 2005 July 15 by Michael Jäger and Gerald Rhemann, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=1177

#bskycometography no. 353

161P/1983 V1 (Hartley-IRAS)

1983 Nov 4: Disc by M. Hartley (Australia) & on Nov 10 by the IRAS satellite at 15 mag. The comet passed perihelion on 1984 Jan 8 at 1.28 au at 10 mag. After outburst in Feb 7.5 mag! Last seen June 4. P=21.4 y, recovery in 2005.
☄️🔭 #CometWatch

View of Purple Mountain Observatory in 1982, https://sciencesprings.wordpress.com/2016/02/18/from-new-scientist-four-big-cosmology-secrets-gravitational-waves-could-uncover/purple-mountain-observatory/

#bskycometography no. 352

C/1977 V1 (Tsuchinshan)

1977 Nov 3: Discovered by Y. C. Chang and colleagues at Purple Mountain Obs (China) at 13.5 mag. The comet was past perihelion (Jul 24 at 3.60 au). The comet did not become brighter and was last seen on 1978 Nov 1.
☄️🔭 #CometWatch

C/1577 V1 over Prague on 1577 Nov 12, broadsheet, Von einem schrecklichen und wunderbarlichen Cometen so sich den Dienstag nach Martini dieses lauffenden M. D. LXXViJ. Jahrs am Himmel erzeiget hat. (Geschrieben von Peter Codicillus von Tulechova), Zentralbibliothek Zürich - Von einem schrecklichen und wunderbarlichen Cometen so sich den Dienstag nach Martini dieses lauffenden M D LXXViJ Jahrs am Himmel erzeiget hat - 000003593.jpg

#bskycometography no. 351

C/1577 V1

1577 Nov 2: First seen from Peru at maybe -7 mag! Quickly seen world-wide. Perihelion on Oct 27 at 0.18 au, perigee on Nov 10 at 0.62 au. Used to prove for the first time that comets are outside of Earth's atmosphere. Last seen on 1578 Jan 26.
☄️🔭 #CometWatch

Image of C/1948 V1 taken from an airplane, image from https://skyweek.wordpress.com/2013/12/26/es-geschah-vor-65-jahren-mysterium-um-die-luft-aufnahmen-des-letzten-finsterniskometen/ by @cosmos4u.bsky.social, also https://www.rocketstem.org/2020/05/16/ice-and-stone-special-topic-21/

#bskycometography no. 350

C/1948 V1 (Eclipse Comet)

1948 Nov 1: Disc on photographs taken during the total solar eclipse at 2° from the sun at maybe -3 mag. From Nov 5 seen from the ground. Max tail ~20°. Perihelion on Oct 27 at 0.14 au. Last seen 1949 Apr 3. ALT for image source.
☄️🔭 #CometWatch

6th May 1921. Albert Einstein with the Yerkes Observatory staff. Einstein is on the front row, seventh from the right. Barnard is the fourth man to the left of Einstein., https://keighleyastronomicalsociety.co.uk/the-life-and-work-of-astronomer-edward-emerson-barnard/

#bskycometography no. 349

C/1888 U1 (Barnard)

1888 Oct 31: Disc by E. E. Barnard (USA) at 9.5 mag with a 10-cm comet-seeker. The comet was past perihelion (Sep 13 at 1.53 au) but faded only slowly. The comet was followed until 1889 May 23. Period ~2500 years.
Can you spot Barnard?
☄️🔭 #CometWatch

Image 112P/Urata-Niijima of 2020 Feb 11 by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=22791

#bskycometography no. 348

112P/1986 UD (Urata-Niijima)

1986 Oct 30: Discovered by T. Urata and T. Niijima (Japan) as an asteroidal object at 16 mag. Indep disc by M. Lovas on Nov 4. Predisc observations of Oct 4 and 29. Perihelion on Nov 22 at 1.44 au. P=6.62 y, recovered in 1993.
☄️🔭 #CometWatch

Space-surveillance facilities at the White Sands Missile Range near Socorro, New Mexico. The four telescopes near the middle and the far-left telescope with open dome represent Lincoln Laboratory’s Experimental Test Site (ETS). The three telescopes on the right represent an operational ground-based electro-optical deep-space surveillance (GEODSS) site, https://www.ll.mit.edu/sites/default/files/publication/doc/lincoln-near-earth-asteroid-research-(linear)-stokes-ja-7600.pdf

#bskycometography no. 347

C/2001 U6 (LINEAR)

2001 Oct 29: Discovered by the LINEAR survey (USA) at 17.5 mag. The comet passed perihelion on 2002 Aug 8 at 4.41 au and became only slightly brighter until then. The comet was last detected on 2003 Nov 23.
☄️🔭 #CometWatch

Situation of C/1695 U1 in the solar system at the day of discovery, https://ssd.jpl.nasa.gov/tools/orbit_viewer.html

#bskycometography no. 346

C/1695 U1

1695 Oct 28: Seen first from the vessel "Le Floriant" in the Arabian Sea at ~1 mag. The tail was 15° at first, reaching almost 28° on Nov 6/7. Very uncertain orbit w/ perihelion on Oct 23 at 0.04 au. Definitely no sungrazer. Last seen on Nov 18.
☄️🔭 #CometWatch

Image of 65P/Gunn of 2009 Mar 28, by David Bender, comet is in the lower half of the image, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=3014

#bskycometography no. 345

65P/1970 U2 (Gunn)

1970 Oct 27: Discovered by J. E. Gunn (USA) at 16 mag. The comet was long past perihelion (1969 Apr 18 at 2.44 au). Period 6.80 years. The comet is observable throughout its full orbit into aphelion, so no date of last observation.
☄️🔭 #CometWatch

Image of the discovery location, Berlin Observatory of 1840, view to East after J. F. Encke, http://www.aip.de/image_archive/Institute.html, Gemeinfrei, https://commons.wikimedia.org/w/index.php?curid=4164202

#bskycometography no. 344

C/1840 U1 (Bremiker)

1840 Oct 26: Discovered by K. Bremiker (Germany) at 9 mag. The comet brightened slightly while passing perihelion on Nov 14 at 1.48 au. Perigee on Dec 4 at 0.87 au. The comet was last detected on 1841 Feb 16. Period 250-400 years.
☄️🔭 #CometWatch

Situation of comet C/1639 U1 on 1639 Oct 26, during perigee, https://ssd.jpl.nasa.gov/tools/orbit_viewer.html

#bskycometography no. 343

C/1639 U1

1639 Oct 25: Seen only over three days and recorded from Korea, China and Italy. Close perigee on Oct 26 at only 0.08 au while exhibiting a "fluffy shape"! The comet was not very bright but rather large, typical for comets close to Earth.
☄️🔭 #CometWatch

Comet 238P/Read on 2016 Sep 30 by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=15144

#bskycometography no. 342

238P/2005 U1 (Read)

2005 Oct 24: Discovered by M. T. Read (USA) at 20 mag. The comet did brighten slightly to maybe 18.5 mag during perigee as it had passed perihelion already on Jul 27 at 2.36 au. Period 5.63 years, recovery in 2010.
☄️🔭 #CometWatch

Image of Carolyn and Gene Shoemaker watch the first Hubble Space Telescope image of the Shoemaker-Levy 9 comet impacting Jupiter in 1994 — the first time people witnessed a comet impact a planet. Photo by John Aiello, NASA/JPL, http://www.geotimes.org/jan04/feature_Carolyn.html

#bskycometography no. 341

C/1984 U1 (Shoemaker)

1984 Oct 23: Disc by C. S. & E. M. Shoemaker (USA) at 16 mag. Predisc images back to 1982 Jan 30. Perihelion on 1984 Sep 3 at 5.49 au. While the comet was not intensively followed it was last seen not before 1990 Jul 22 at r=14.7 au!
☄️🔭 #CometWatch

Image of Theodor Johann Christian Ambders Brorsen of around 1875, https://www.jessenb.dk/Nordborg/Hvemvarde/Brorsen.html

#bskycometography no. 340

C/1851 U1 (Brorsen)

1851 Oct 22: Discovered by T. J. C. A. Brorsen (Czechia) at 4 mag with a "brilliant tail" longer than 1° and a small anti-tail. The comet was past perihelion (Oct 1 at 0.14 au) and faded afterwards. It was last detected on Nov 21.
☄️🔭 #CometWatch

Image of William Robert Brooks, my collection

#bskycometography no. 339

C/1898 U1 (Brooks)

1898 Oct 21: Discovered by W. R. Brooks (USA) at 7 mag two days prior perigee at 0.61 au. The comet kept more or less a steady magnitude and passed perihelion on Nov 23 at 0.76 au and was last seen three days later on Nov 26.
☄️🔭 #CometWatch

Image of P/2020 U2 (PANSTARRS) on 2021 Jan 10 by Michael Jäger, https://fg-kometen.vdsastro.de/pix/test/bild.php?nr=27166

#bskycometography no. 338

P/2020 U2 (PANSTARRS)

2020 Oct 20: Discovered by the PANSTARRS survey (USA) at 20.5 mag. Predisc images back to Sep 17. The comet passed perihelion on Dec 25 at 1.85 au and reached 15 mag in early 2021. It was last seen on Apr 11. Period 7.34 years.
☄️🔭 #CometWatch

Image of The first IAUC ever published containing discovery information on comet C/1922 U1 (Baade), http://www.cbat.eps.harvard.edu/IAUCs/IAUC0001c.jpg

#bskycometography no. 337

C/1922 U1 (Baade)

1922 Oct 19: Discovered by W. H. W. Baade (Germany) at 10.5 mag shortly before passing perihelion on Oct 26 at 2.26 au. The comet maintained a magnitude of 9-10 mag until the end of 1922. It was last seen on 1924 Jan 28.
☄️🔭 #CometWatch