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Nearest quasars

[edit]
10 Least Distant
Rank Quasar Distance Notes
1 3C 273 z=0.158

  • z represents redshift, a measure of recessional velocity and inferred distance due to cosmological expansion

[1]

Least Distant Quasar Titleholders
Quasar Date Distance Notes
3C 273 1963 − current z=0.158 First redshift identified for a quasar. This was the most distant object discovered at the time of discovery. No other quasars are less distant than the first quasar whose redshift was measured.

  • z represents redshift, a measure of recessional velocity and inferred distance due to cosmological expansion

Quasars mistaken for other things

[edit]
Quasars mistaken for other things
Quasar non-quasar name Mistaken for Notes
(or perhaps a galaxy) (Huensch et al. 1996 - coolest ROSAT star) star [2]
QSO z=0.172 (Margon & Deutsch 1997) CC Boo halo red giant (Jura & Kleinmann 1992) [2]
BL Lac star [2]
X Com star [2]
AP Lib star [2]
V396 Her star [2]
3C 273 3C 273 emission lines being attributed to transitions in highly ionized neon and such, at their rest wavelengths [2]
  1. ^ QUASARS - HOW BIG ARE THEY?
  2. ^ a b c d e f g Astronomy Society of the Pacific, "Astrophysics in 1997", Virginia Trimble and Lucy-Ann McFadden, 1998 March (accessed 2009-11-11)