479P/Elenin
Discovery | |
---|---|
Discovered by | Leonid Elenin[1] 0.45-m reflector (H15)[2][3] |
Discovery date | 7 July 2011[2] |
Designations | |
P/2011 NO1 (Elenin), 2023 WM26 | |
Orbital characteristics | |
Epoch | 15 June 2020[4] (JD 2459015.5) |
Aphelion | 9.98 AU (Q) |
Perihelion | 1.24 AU (q) |
Semi-major axis | 5.61 AU (a) |
Eccentricity | 0.779 |
Orbital period | 13.28 yr |
Inclination | 15.40° |
295.81° | |
Argument of periapsis | 263.64° |
Last perihelion | 20 January 2011[4] |
Next perihelion | 5 May 2024[5] |
TJupiter | 2.183 |
Earth MOID | 0.38 AU |
479P/Elenin, with provisional designation P/2011 NO1 (Elenin), is a periodic comet with a preliminary orbital period estimated at 13 ± 0.16 years.[4] It came to perihelion (closest approach to the Sun) around 20 January 2011 at 1.2 AU from the Sun.[4]
The comet was discovered on 7 July 2011[2] when the comet was 2.38 AU from the Sun and 1.4 AU from the Earth. P/2011 NO1 was the second comet discovered by Leonid Elenin. The first comet discovered by Elenin was comet C/2010 X1. Both comets were discovered with the aid of the automatic detection program CoLiTec.[6] It came to opposition 178.6° from the Sun on 22 July 2011 in the constellation Sagittarius.
On 29 January 2013 the Minor Planet Center awarded Leonid Elenin a 2012 Edgar Wilson Award for the discovery of comets by amateurs.[7]
Maik Meyer proposed that asteroid 2023 WM26, which was discovered by PanSTARRS on 18 November 2023, is the return of P/2011 NO1 (Elenin).[8][9] The link was later confirmed by Shuichi Nakano and Daniel Green.[5]
References[edit]
- ^ Sostero, Giovanni; Howes, Nick; Guido, Ernesto (19 July 2011). "New Comet: P/2011 NO1". Associazione Fruilana di Astronomia e Meteorologia. Retrieved 19 July 2011.
- ^ a b c "MPEC 2011-O09 : 2011 NO1". IAU Minor Planet Center. 18 July 2011. Retrieved 19 July 2011.
- ^ "MPEC 2011-O10 : COMET P/2011 NO1". IAU Minor Planet Center. 19 July 2011. Retrieved 19 July 2011.
- ^ a b c d "JPL Small-Body Database Browser: (2011 NO1)". Jet Propulsion Laboratory. Retrieved 28 January 2024.
- ^ a b Green, Daneil (28 January 2024). "COMET P/2023 WM_26 = P/2011 NO_1 (ELENIN)". Central Bureau for Astronomical Telegrams. 5340: 1.
- ^ "CoLiTec". Automatic Detection of Asteroids and Comets CoLiTec (CLT). Archived from the original on 13 May 2012. Retrieved 4 October 2012.
- ^ "2012 Comet Awards Announced". 29 January 2013. Retrieved 31 January 2013.
- ^ Meyer, Maik. "2023 WM26 = P/2011 NO1 (Elenin)". groups.io. Retrieved 10 January 2024.
- ^ "MPEC 2023-Y72 : 2023 WM26". Minor Planet Center. 21 December 2023. Retrieved 10 January 2024.
External links[edit]
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- Elements and Ephemeris for P/2011 NO1 – Minor Planet Center
- Survey anniversary gift – a new comet is discovered! (Leonid Elenin – SpaceObs – 19 July 2011)
- New comet P/2011 NO1 (Luca Buzzi – 19 July 2011)
- New Comet: P/2011 NO1 (Remanzacco Observatory – 19 July 2011)