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Comet 289P/Blanpain: Near-perihelion Activity and the Phoenicids

  • Authors: Toshihiro Kasuga

Toshihiro Kasuga 2025 The Astronomical Journal 169 .

  • Provider: AAS Journals

Caption: Figure 2.

The median-combined images of 289P (center) in Visit B (MJD 58860: UT 2020 January 11–12, outbound). Both frames have a size of 200″ × 200″ with an integration time of 15.4 s. The left panel shows the W1-band image with FWHM θF = 6﹩\mathop{.}\limits^{{\rm{^{\prime} }}{\rm{^{\prime} }}}﹩​​​​6, while the right panel shows the W2-band image with θF = 6﹩\mathop{.}\limits^{{\rm{^{\prime} }}{\rm{^{\prime} }}}﹩ ​9. A 40″ scale bar is included. Rh = 1.01 au, Δ = 0.09 au, and α = ﹩70\mathop{.}\limits^{\circ }2﹩. North and east exhibit the cardinal directions. −V shows the direction of the negative heliocentric velocity vector and −⊙ shows the antisolar direction.

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