By Kenneth Lang
This quantity of Astrophysical facts offers with Planets and Stars; a moment quantity, half II, will provide information for Galaxies and the Universe. They either seasoned vide uncomplicated information to be used by means of all scientists, from the beginner astronomer to the pro astrophysicist. during this first quantity, we not just supply actual parameters of planets, stars and their setting, yet we additionally give you the celestial coordinates required to monitor them. the following we use c.g.s. devices, for they're the main well-known in astron omy and astrophysics; yet our quantity starts off with astronomical and actual constants and the conversion components wanted for different devices. the following part matters the planets and their satellites; it singles out the Earth and Moon for precise therapy. Spacecraft rendezvous with the planets and satellites have resulted in more desirable values for his or her atmospheric compositions, orbital parameters, magnetic fields, plenty, radii, rotation sessions, and floor pressures and temperatures. This part additionally comprises facts for the asteroids, comets and their particles. We then talk about daily stars, starting with the solar, and carrying on with with easy stellar information, the brightest stars and within reach stars. unique different types of stars, comparable to the Wolf-Rayet stars, magnetic stars, flare stars, and RS CVn binary stars, are included.
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Additional resources for Astrophysical Data: Planets and Stars
T. , N. 7 60 0N l11°W 71°N 111°E 57°N 44°E 48°N 102°W 49°N l1°E • After Grieve (1979) and Wasson (1974). 40 2. Planet Earth Terrestrial Impact Craters' Name Diameter (km) Age (10 6 years) Location 56 57 58 59 60 Rochechouart, France Rotmistrovka, USSR Siiiiksjiirvi, Finland St. 5 13 52 30 < 300 12 100 365± 7 350 8 0S 47°W 43°N 73°E 31°N 103°W 61°N 15°E 49°N 87°W 66 67 68 69 70 Steen River, Alberta, Canada Steinheim, Germany Strangways, N. 7 150 ± 70 1840 ± 150 < 30 60 0N 118°W 49°N lOoE 15°S 134°E 47°N 81°W 44°N 1100E 71 72 73 74 75 Tenoumer, Mauritania Vepriaj, Lith.
0021 Earth masses) Orbit Tilt 120°(retrograde) • Adapted from Mc Kinnon and Mueller (1988). 3. The Planets 44 Physical Elements Of The Inner Planets· Mercury Venus Earth Mars Equatorial Radius, R. 043 3098710 Oblateness, (Re-Rp )/R. 93 "Equatorial radii and oblateness for Venus, Earth and Mars from Pettengill et al. (1980), Clemence (1965) and Lindal et al. (1979), respectively. Reciprocal masses MelMp, are from the Jet Propulsion Laboratory ephemeris, courtesy of J. Myles Standish, Jr. (1988).
1976) and Conrath et al. (1989), respectively. The atmospheric temperatures at the one-bar radius are from Lindal et al. (1987). "The heat ratio is the ratio of the thermal emission to solar energy absorbed. 3. (2oo0) (degrees) North Pole Dec. 3640000 d ·From Davies et al. (1986, 1983). 0, while T is the interval in Julian centuries (of 36525 days) from this standard epoch. 047 'Gravitational potentials of the planets are given by Esposito et al. (1977-Mercury)' Aanda et al. (1980-Venus), Kaula (1966-Earth), Jordan and Lorell (1975-Mars)' Christensen and Balmino (1979-Mars), Campbell and Synnott (1985-Jupiter), Null (1976-Jupiter), Null, Biller and Anderson (1981-Saturn), French et al.