Everything about Sn 1604 totally explained
| dec =
| gal = G4.5+6.8
| discovery = October 1604
| iauc =
| mag_v = -2.25 to -2.5
| distance = 20000 light-years, or 6
kpc
| progenitor = Unknown
| progenitor_type = Unknown
| b-v = Unknown
| notes = Last observed supernova
in our galaxy.
Maintained naked-eye
visibility for 18 months. }}
Supernova 1604, also known as
Kepler's Supernova or
Kepler's Star, was a
supernova which occurred in the
Milky Way, in the constellation
Ophiuchus. As of
2007, it's the last
supernova to have been unquestionably observed in our own
galaxy, occurring no farther than 6
kiloparsecs or about 20,000
light-years from
Earth. Visible to the
naked eye, it was brighter at its peak than any other
star in the
night sky, and all the
planets (other than
Venus), with
apparent magnitude −2.5.
The supernova was first observed on
October 9,
1604. The
German astronomer Johannes Kepler first saw it on
October 17, subsequently named after himself. His book on the subject was entitled
De Stella nova in pede Serpentarii (On the new star in Ophiuchus's foot).
It was the second supernova to be observed in a generation (after
SN 1572 seen by
Tycho Brahe in
Cassiopeia). No further supernovae have since been observed with certainty in the
Milky Way, though many others outside our galaxy have been seen.
The
supernova remnant resulting from this supernova is considered to be one of the "prototypical" objects of its kind, and is still an object of much study in
astronomy.
Further Information
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