C/2014 Q3 (Borisov)

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C/2014 Q3 (Borisov) is a periodic comet discovered at apparent magnitude 17 on 22 August 2014 by amateur astronomer Gennadiy Borisov using a 0.3-meter (12 in) astrograph.[1] It is the third comet discovered by Borisov. The comet is best viewed from the northern hemisphere.

C/2014 Q3 (Borisov)
Discovered byGennadiy Borisov
0.3 m f/1.5 astrograph (L51)[1]
Discovery date22 August 2014
Orbital characteristics A
Epoch9 December 2014[2]
Aphelion55.111 au
Perihelion1.6474 au (q)[2]
Orbital period146 years (epoch 2050)[3]
Last perihelion19 November 2014[2]
Next perihelion~2160

The comet was expected to reach about magnitude ~11 near perihelion (closest approach to the Sun), but brightened to around magnitude 10.[4] By 8 November 2014, the comet had a declination of +83 and was circumpolar from the northern hemisphere.[5] The comet came to perihelion on 19 November 2014 at a distance of 1.65 au from the Sun.[2]

Before entering the planetary region (epoch 1950), C/2014 Q3 had an orbital period of 148 years.[3] After leaving the planetary region (epoch 2050), it has an orbital period of 146 years.[3]

See alsoEdit


  1. ^ a b "MPEC 2014-Q38 : COMET C/2014 Q3 (BORISOV)". IAU Minor Planet Center. 19 August 2014. Retrieved 3 November 2014. (CK14Q030)
  2. ^ a b c d e f "MPEC 2014-U124 : Observations and Orbits of Comets". IAU Minor Planet Center. 29 October 2014. Retrieved 3 November 2014.
  3. ^ a b c Horizons output. "Heliocentric Osculating Orbital Elements for Comet C/2014 Q3 (Borisov)". Retrieved 3 November 2014. (Solution using heliocentric values)
  4. ^ Seiichi Yoshida (2 November 2014). "C/2014 Q3 ( Borisov )". Seiichi Yoshida's Comet Catalog. Retrieved 3 November 2013.
  5. ^ "Elements and Ephemeris for C/2014 Q3 (Borisov)". Minor Planet Center. Archived from the original on 3 November 2014. Retrieved 3 November 2014. (CK14Q030)