Characterization of the near-Earth Asteroid 2002 NY40

Abstract

In August 2002, the near-Earth asteroid 2002 NY 40 , made its closest approach to the Earth. This provided an opportunity to study a near-Earth asteroid with a variety of instruments. Several of the telescopes at the Maui Space Surveillance System were trained at the asteroid and collected adaptive optics images, photometry and spectroscopy. Analysis of the imagery reveals the asteroid is triangular shaped with significant self-shadowing.The photometry reveals a 20-hour period and the spectroscopy shows that the asteroid is a Q-type.

Isolating the mechanisms for asteroid surface refreshing

“…We include visible and near-infrared spectra of 477 S-complex NEOs and Mars Crossers (defined here as perihelion <1.67 AU) with H≥16, signal-to-noise ratio at 1 m ≥ 20 and olivine to pyroxene ratio ≥0.65 (described in Sec 3.2) most of which are publicly available from the SMASS and MITHNEOS programs (Bus and Binzel 2002;Binzel et al 2004b;DeMeo et al 2009;Binzel et al 2019a;Marsset et al 2022) as well as other published literature (Wisniewski 1991;Hicks et al 1998;Binzel et al 2001a,b;Whiteley 2001;Bus and Binzel 2002;Binzel et al 2004b;Lazzarin et al 2004;Binzel et al 2004a;Rivkin et al 2004;Lazzarin et al 2005;Michelsen et al 2006;Roberts et al 2007;Hicks and Lawrence 2009;Binzel et al 2009;de León et al 2010;Hicks et al 2010a;Hicks and Buratti 2010;Hicks et al 2010bHicks et al , 2011Hasselmann et al 2011;Hicks et al 2012;Sanchez et al 2013;Ieva et al 2014;Kuroda et al 2014;Thomas et al 2014;Perna et al 2016;Carry et al 2016;Binzel et al 2019a;Marsset et al 2022). The full list of asteroids with their observation dates and visible and near-infrared data references are provided in the Supplementary Data.…”