16 relations: Amor asteroid, Anderson Mesa Station, Apsis, Asteroid, Degree (angle), Extinct comet, Jet Propulsion Laboratory, Julian day, Julian year (astronomy), Lowell Observatory Near-Earth-Object Search, Meteor shower, Near-Earth object, Observation arc, Peter Jenniskens, Quadrantids, 1490 Ch'ing-yang event.
The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor.
Anderson Mesa Station is an astronomical observatory established in 1959 as a dark-sky observing site for Lowell Observatory.
An apsis (ἁψίς; plural apsides, Greek: ἁψῖδες) is an extreme point in the orbit of an object.
Asteroids are minor planets, especially those of the inner Solar System.
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.
An extinct comet is a comet that has expelled most of its volatile ice and has little left to form a tail and coma.
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.
Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.
In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.
Lowell Observatory Near-Earth-Object Search (LONEOS) was a project designed to discover asteroids and comets that orbit near the Earth.
A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky.
A near-Earth object (NEO) is any small Solar System body whose orbit can bring it into proximity with Earth.
In observational astronomy, an observation arc (or arc length) is the time period between the first and most recent (last) observation, tracing the body's path.
Petrus Matheus Marie (Peter) Jenniskens (born 2 August 1962 in Horst) is a Dutch and American astronomer and a senior research scientist at the Carl Sagan Center of the SETI Institute and at NASA Ames Research Center.
The Quadrantids (QUA) are a January meteor shower.
The Ch'ing-yang event of 1490 (also Ch'ing-yang, Chi-ing-yang or Chíing-yang meteor shower) is a presumed meteor shower or air burst in Qìngyáng (Ch'ing-Yang) in March or April 1490.