Comet Hale–Bopp

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C/1995 O1 (Hale–Bopp)
Comet Hale–Bopp, shortly efter passin perihelion in Aprile 1997.
Discovery
Discovered bi Alan Hale / Thomas Bopp
Discovery date Julie 23, 1995
Alternative
designations
The Great Comet o 1997,
C/1995 O1
Orbital characteristics A
Epoch 2450460.5
Aphelion 370.8 AU[1]
Perihelion 0.914 AU[1]
Semi-major axis 186 AU
Eccentricity 0.995086
Orbital period 2520[2]–2533[1] yr
(Barycentric 2391 yr)[3]
Inclination 89.4°
Last perihelion Aprile 1, 1997[1]
Next perihelion ~4385[4]

Comet Hale–Bopp (formally designatit C/1995 O1) wis perhaps the maist widely observed comet o the 20t century an ane o the brichtest seen for mony decades. It wis visible tae the naked ee for a record 18 months, twice as lang as the previous record haulder, the Great Comet o 1811.

Hale–Bopp wis discovered on Julie 23, 1995, at a great distance frae the Sun, raisin expectations that the comet would brichten considerably bi the time it passed close tae Yird. Altho predictin the brichtness o comets wi ony degree o accuracy is very difficult, Hale–Bopp met or exceedit maist predictions when it passed perihelion on Aprile 1, 1997. The comet wis dubbed the Great Comet o 1997.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: C/1995 O1 (Hale–Bopp)". 2007-10-22 last obs. Retrieved 2008-12-05. 
  2. Syuichi Nakano (2008-02-12). "OAA computing section circular NK 1553". OAA Computing and Minor Planet Sections. Retrieved 2009-12-17. 
  3. Horizons output. "Barycentric Osculating Orbital Elements for Comet C/1995 O1 (Hale-Bopp)". Retrieved 2011-01-31.  (Solution using the Solar System Barycenter and barycentric coordinates. Select Ephemeris Type:Elements and Center:@0)
  4. "Solex 10 estimate for Next Perihelion of C/1995 O1 (Hale-Bopp)". Retrieved 2009-12-18.