Extragalactic Novae

Much of this data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. CBET now has an M31 novae page An archive of the updates to this page is available.

CBET has a naming convention now for novae in M31.   This convention is YYYY-MMa, where YYYY is the year and MM is the 2-digit month of discovery, and 'a' is a lower-case letter (a, b, c, etc.) representing the order of discovery within that month.   All extragalactic novae are now to follow this naming convention.   Novae in the megellanic clouds are named with the year followed by a number.  

SNWeb is now collecting observations on extragalactic novae.   Due to the large number of Extragalactic Novae announced in 2003 I have decided to give these novae their own page. That way you don't need to hunt through the main page to find them.   Announced Extragalactic Novae will have a link on the main page that points to this one.   Please note that I do not keep track of galactic novae.  

Nova M31 2008-12b, ATEL 1886, discovered 2008/12/30.207 by Koichi Nishiyama and Fujio Kabashima; P60-Fast Transients In Nearby Galaxies (PDF)
  • Found in M31 at R.A. = 00h43m05s.03, Decl. = +41°17'52".25
  • Located 233".4 east and 103".8 north of the center of NGC 224 (= M31) (Discovery image)
  • Mag 19.4, Extragalactic Nova (References: CBAT M31 page)

    • Nova M31 2008-12a, unnanounced, discovered 2008/12/26.481 by Koichi Nishiyama and Fujio Kabashima
  • Found in M31 at R.A. = 00h45m28s.80, Decl. = +41°54'10".1
  • Located 1854" east and 2282" north of the center of NGC 224 (= M31) (Discovery image)
  • Mag 19.9 (12/26:18.7), Extragalactic Nova (References: CBAT M31 page)

    • Nova M81 2008-12b, CBET 1653 discovered 2008/12/29.202 by Kamil Hornoch and P. Sedinova; P60-Fast Transients In Nearby Galaxies (PDF)
  • Found in M81 at R.A. = 09h55m38s.15, Decl. = +69°01'43".6
  • Located 26.7" east and 131.4" south of the center of NGC 3031 (= M81) (Discovery image) (Kamil Hornoch image)
  • Mag 18.7, Extragalactic Fe II Nova (References: ATEL 1887)

    • Nova M81 2008-12a, CBET 1632 discovered 2008/12/02.287 by P60-Fast Transients In Nearby Galaxies (PDF); Kamil Hornoch
  • Found in M81 at R.A. = 09h55m16s.920, Decl. = +69°02'17".68
  • Located 87.9" west and 97.7" south of the center of NGC 3031 (= M81) (Discovery image)
  • Mag 21.2 (12/6:20.2), Extragalactic Nova (References: ATEL 1880)

    • 2 novae candidates in M31 ATEL 1857 Discovery images

    Nova M31 2008-11c = Supernova 2008hz

    Nova M31 2008-11b, CBET 1588, discovered 2008/11/26.498 by Koichi Itagaki
  • Found in M31 at R.A. = 00h42m26s.51, Decl. = +42°15'36".7
  • Located east and north of the center of NGC 224 (= M31) (Discovery image) (Koichi Itagaki image) (Stan Howerton image) (Diego Rodriguez image)
  • Mag 16.6 (11/26:14.7), Galactic variable (not a nova) (References: ATEL 1867, CBET 1611, CBAT M31 page)

    • Nova M82 2008 2, ATEL 1854 discovered 2008/11/19.536 by P60-Fast Transients In Nearby Galaxies (PDF)
  • Found in M82 at R.A. = 09h55m58s.390, Decl. = +69°40'56".17
  • Located south of the center of NGC 3034 (= M82) (Discovery image (larger version))
  • Mag 20.6, Extragalactic Nova

    • 3 novae candidates in M31 ATEL 1845 Discovery images

    Nova M31 2008-11a, ATEL 1832, discovered 2008/11/04.718 by K. Nishiyama and F. Kabashima; K. Hornoch
  • Found in M31 at R.A. = 00h41m32s.26, Decl. = +41°06'01".2
  • Located 814" west and 607" south of the center of NGC 224 (= M31) (Discovery image) (Martin Henze image)
  • Mag 16.5, Extragalactic He/N/Fe II/"Hybrid" Nova (References: CBAT M31 page)

    • Nova M81 2008 3, ATEL 1826 discovered 2008/10/21.501 by M. M. Kasliwal
  • Found in M81 at R.A. = 09h55m36s.105, Decl. = +69°03'22".04
  • Located 15.8" east and 33.1" south of the center of NGC 3031 (= M81) (Discovery image)
  • Mag 21.5, Extragalactic Nova

    • Nova M31 2008-10b, ATEL 1790 discovered 2008/10/18.91 by Martin Henze et el.
  • Found in M31 at R.A. = 00h43m02s.42, Decl. = +41°14'09".9
  • Located 204" east and 120" south of the center of NGC 224 (= M31) (Discovery image)
  • Mag 18.3, Extragalactic FeII Nova (References: ATEL 1818, 1871; CBAT M31 page)

    • Nova M31 2008-10a, unnanounded discovered 2008/10/07.711 by Koichi Nishiyama
  • Found in M31 at R.A. = 00h42m44s.35, Decl. = +41°54'44".2
  • Located 576" east and 2316" north of the center of NGC 224 (= M31) (Discovery image) (Koichi Nishiyama image)
  • Mag 17.1, Extragalactic Nova (References: ATEL 1789; CBAT M31 page)

    • Nova M81 2008 2, CBET 1528 discovered 2008/09/25.49 by M. M. Kasliwal
  • Found in M81 at R.A. = 09h55m59s.35, Decl. = +69°05'57".1
  • Located 2.35' east and 2.03' north of the center of NGC 3031 (= M81) (Discovery image)
  • Mag 20.8, Fe II Extragalactic Nova (References: ATEL 1764)

    • archive.gif For Novae which have faded below 18th magnitude,
    you will have to look in the archives
    Current supernovae
    Other supernovae from 2008 other extragalactic Novae from 2008
    Supernovae from 2007 Extragalactic Novae from 2007

    Links

    Look at the updates page for a list of the most recent changes and additions to these pages.

    For Novae which have faded below 18th magnitude,
    you will have to look in the archives
    Back to Bright Supernovae.
    Back to Extragalactic Novae - 2007.
    Back to Extragalactic Novae - 2006.
    Back to Archives.

    Please send feedback to David Bishop dbishop@vhdl.org