periodic object
1Periodic graph (crystallography) — For other uses, see Periodic graph. A (large) unit cell of Diamond crystal net; the balls represent carbon atoms and the sticks represent covalent bonds …
2Periodic law — Law Law (l[add]), n. [OE. lawe, laghe, AS. lagu, from the root of E. lie: akin to OS. lag, Icel. l[ o]g, Sw. lag, Dan. lov; cf. L. lex, E. legal. A law is that which is laid, set, or fixed; like statute, fr. L. statuere to make to stand. See… …
3List of periodic comets — Periodic comets are defined for these purposes as those comets having orbital periods of less than 200 years (also known as short period comets ) or which have been observed during more than a single perihelion passage (e.g. 153P/Ikeya Zhang).… …
4Near-Earth object — Asteroid 4179 Toutatis is a potentially hazardous object that has passed within 2.3 lunar distances …
5Detached object — Trans Neptunian objects beyond 100AU: SDO (in grey) and detached objects (in white) Detached objects are a dynamical class of bodies in the outer Solar System beyond the orbit of Neptune. These objects have orbits whose points of closest approach …
6History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… …
7Classical Kuiper belt object — The orbits of various cubewanos compared to the orbit of Neptune (blue) and Pluto (pink) …
8Quasi-periodic oscillations — In high energy (X ray) astronomy, quasi periodic oscillations (QPOs) refer to the way the X ray light from an astronomical object flickers about certain frequencies. In these situations, the X rays are emitted near the inner edge of an accretion… …
9Resonant trans-Neptunian object — In astronomy, a resonant trans Neptunian object is a trans Neptunian object (TNO) in mean motion orbital resonance with Neptune. The orbital periods of the resonant objects are in a simple integer relations with the period of Neptune e.g. 1:2,… …
10Magnetospheric eternally collapsing object — Magnetospheric Eternally Collapsing Objects or MECOs are proposed alternatives to black holes advocated by Darryl Leiter and Stanley Robertson.[1] They are a variant of eternally collapsing objects or ECOs proposed by Abhas Mitra in 1998.[2]… …
