(196256) 2003 EH1

Near-Earth asteroid September 2020 yes #FFC2E0 (196256) 2003 EH 1 LONEOS 6 March 2003 (196256) 2003 EH 1 NEOAmorextinct comet 13 January 2016 (JD 2457400.5) 0.618907 (e) 3.12275 AU Gm on (a) 1.190060 AU Gm on (q) 5.52 yr (2015.6 d) 5.055446 AU Gm on on (Q) 70.865968° (i) 282.972499° (Ω) 16.2 2.6 – 4.0 km mi 0.04–0.09 (assumed) 171.3709° (ω) 119.8736° (M) 0.1786066 ms / day (n) 4035 days (11.05 yr) 0 0.21143 AU Gm on 0.231939 AU Gm on 2.065 12.650 0.033 h (196256) 2003 EH 1 is an asteroid, classified as a near-Earth object of the Amor group. It was discovered on 6 March 2003, by astronomers of the LONEOS program at Anderson Mesa Station near Flagstaff, Arizona, in the United States. Peter Jenniskens (2003–2004) proposed that it is the parent body of the Quadrantid meteor shower. 2003 EH 1 is likely an extinct comet and may even be related to the comet C/1490 Y1. 2003 EH 1 came to perihelion on 12 March 2014. thumb|320px|left|The orbit of 2003 EH 1 left References 2014-03-23 last obs and observation arc=11.05 years JPL Small-Body Database Browser: 196256 (2003 EH1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003EH1;cad=1 Jet Propulsion Laboratory 7 April 2016 2003-12-08 IAUC 8252: 2003kw; 2003 EH_1, THE QUADRANTIDS IAU Central Bureau for Astronomical Telegrams http://www.cbat.eps.harvard.edu/iauc/08200/08252.html 2015-10-14 Dead comet spawned New Year meteors Nature News 2003 10.1038/news031229-5 Ball Philip Jenniskens Peter Peter Jenniskens 2003 EH1 Is the Quadrantid Shower Parent Comet The Astronomical Journal 127 5 3018–3022 2004 10.1086/383213 2004AJ....127.3018J free Porubčan V. Kornoš, L. The Quadrantid meteor stream and 2003 EH1 Contributions of the Astronomical Observatory Skalnaté Pleso 35 1 5–16 2005 2005CoSka..35....5P Toshihiro Kasuga and David Jewitt Physical Observations of (196256) 2003 EH1, Presumed Parent of the Quadrantid Meteoroid Stream Kasuga Toshihiro Jewitt David The Astronomical Journal 150 5 152 2015 1509.03361 2015AJ....150..152K 10.1088/0004-6256/150/5/152 50649 External links Quadrantid Parent Discovered (Leonid Daily News: 8 December 2003) 196256 196256 2003EH1 196256 196256 (196256) 2003 EH 1 196256 196256 196256 # 20030306