Asteroid

Zdroj: http://www.calsky.com/

Eunomia (15)
Date       RA  (J2000)  Dec  Const- Mag-   Radius  Delta   Elonga- Phase   dRA   dDec     Rise  Tran-   Set 
                             ella. nitude                   tion   Angle                         sit        
2011     h  m   s    o  '  "         mag     AU      AU      o       o    "/h    "/h    h  m   h  m   h  m
Nov 28   4:03:43.9 +36:35:05  Per    7.9   2.2074  1.2410 164.5 W   6.9  -32.1  -20.0  13h19m 23h33m  9h52m

Glossary:

Asteroid: Solid body which revolves around the Sun and it is neither a planet, nor a comet. More casually: in the solar system thousands, if not even hundreds of thousands of mountain-large to mountain-range large floating rocks. Particularly many gather between Mars and Jupiter. In addition, beyond the orbit of Neptune a gigantic supply of such bodies seem to exist.
Time and Date: Date of validity of calculated output in local time and date, taking into account daylight saving time as well (see the current time zone on the left of the Earth icon on top right of almost all pages). The time is given as hours:minutes:seconds, or 00h00m00s. The time may also be rounded and given in decimal form: e.g., 10.1h means that the event will take place at about 5 minutes past 10 o'clock. This may also happen for days: 4.3d corresponds to the fourth day at around 7 o'clock. The start time is taken as selected by you, i.e., this is not necessarily at midnight. For intervals shorter than one day, decimal days are given. Times are given in 24 hour format (0h00m is midnight, 12h: noon, 18h: 6 pm.)
Topocentric: Data is referring to your selected observing site.
Geocentric: Data is referring to the mass center of the Earth. Coordinates do not take into account perspective effects from the parallax.
Heliocentric: Data is referring to the center of the Sun, which is slightly off the center of mass of the solar system.
R.A., right ascension, RA: One coordinate used to indicate the position on the sphere. It is the angular distance of the object from the spring equinox measured along the celestial equator, expressed in hours of arc.
Dec., declination, DE: One coordinate used to indicate the position on the sky. It is the angular distance of the object from the celestial equator. North pole, close to Polaris, is 90° north.
Equatorial coordinates: The coordinates are referred to the celestial equator. Reference direction is the direction towards the vernal equinox. 'Right ascension' is the angle measured in hours eastwards along the celestial equator from the equinox to the hour circle passing through the celestial object. 'Declination' is the angle measured from the celestial equator along the hour circle to the object.
Horizontal coordinates: Topocentric coordinates regarding the local horizon (plane perpendicular to the line from an observer to the zenith). Reference direction is local north. The coordinate 'azimuth' of a celestial object is measured clockwise in degrees along the horizon starting from north. 'Altitude' is the angle of the object above the plane of the horizon.
Ecliptic coordinates: Position of celestial body referred to the mean plane of Earth's orbit around the Sun and the spring equinox, expressed in ecliptic longitude (°) and latitude.
Geometric coordinates: Celestial coordinates referring to the center of the Earth without correction of planetary aberration.
Astrometric coordinates: Position of an object corrected in such a way, that it can directly be plotted into a star chart for a given epoch (usually J2000). This is the geometric position, corrected for light-time.
Apparent coordinates: Celestial coordinates which are directly observable. Corrected for various effects: i.e., light-time, light deflection due to effects of relativity, planetary aberration, and corresponding to the true equator and equinox. Topocentric apparent coordinates include effects of refraction (if not assumed airless) and diurnal aberration (perspective displacement from the Earth mass center).
J2000, precession, nutation: The plains of ecliptic and equator shift with time by perturbations from the Sun, Moon and planets. The long-term shift is called precession; the short periodic variations are called nutation. The given celestial coordinates are referred to the true direction of the vernal equinox and the true obliquity of the ecliptic to the standard reference time 1 January 2000. For this date many star charts and coordinate tables are printed.
mean date / mean equator and equinox: Celestial coordinates that are corrected only for the long-term movement of the vernal equinox and obliquity of the ecliptic (precession).
true date / true equator and equinox: The celestial coordinates refer to the current (of the 'true' date of the coordinates) direction of the vernal equinox and obliquity of the ecliptic. Both the long-term precession and the short-term, periodic variations of nutation are corrected for.
Magnitude/Mag: Brightness of an object considered as a point source of light, on a logarithmic scale. Visual limiting magnitude is about 6mag, whereas the brightest star Sirius reaches -1.4mag. The Hubble Space Telescope can image objects as dim as 29mag.
Radius: Distance of the celestial body from main central body (Earth for the Moon, the Sun otherwise). For the Moon the unit is Earth radii (ER), otherwise Astronomical Unit (AU), the mean distance between the Sun and Earth.
Delta: Distance of the celestial body from Earth in Astronomical Units (AU). For the Moon, Delta is the topocentric distance of the Moons mass center from the observer in Earth radii (ER). It is also the fourth letter in Greek alphabet.
Elongation: The elongation is the angular separation of the (ecliptic) longitudes of a celestial body and the central body (Sun, for moons: Jupiter or Saturn), as seen from the Earth mass center.
Phase: Ratio of the illuminated fraction of the apparent planetary or lunar disk to its entire area.
dRA, dDec: Apparent angular movement of the object. The value for right ascension is reduced to the movement at the celestial equator.
Rise, Transit, Culmination, Set: Rise and set times are for a mathematical horizon. Transit is the moment when the celestial object crosses the south meridian (for the northern hemisphere, north otherwise), i.e., it stands exactly in south direction. There it reaches (for objects other than stars: almost) its highest point on its diurnal journey. Culmination is the event of the highest point. Times are listed only if they fall within the chosen interval, starting at the start time. Missing values indicate that the event does not take place at the underlying interval.