The files contain osculating elements of numbered minor planets with respect to the ecliptic plane and equinox J2000 for the standard epoch common for all minor planets. Set of data for each planet in general corresponds to those in EMP, but some additional information is also included.
     The data for each planet are given in three successive lines. The first line contains:

• minor planet number,
• name or preliminary designation,
• photometric parameters, H and G (the default value of the slope parameter G equal to 0.15 is indicated as X). epoch of elements (year, month, day) given for 0 hour TT; epoch is also given in JD.

• mean anomaly,
• argument of perihelion,
• longitude of ascending node,
• inclination to the ecliptic plane,
• eccentricity,
• mean daily motion,
• semimajor axis.

• number of oppositions with observations used for improvement,
• number of observations used for improvement,
• the first and the last year of the time interval covered by the observations used for improvement,
• mean-root-square residual or maximum residual with respect to set of elements fitted by least squares (in the last case sign + or – precedes absolute value of the residual),
• “uncertainty number” U (see Minor Planet Circular 24597, 1995 Feb. 15), if it is known,
• perturbations taken into account when determining the initial set of elements and for subsequent numerical integration (M–N in the first three positions stands for perturbations from Mercury to Neptune, P in the fourth position stands for perturbations from Pluto, then c, p, v, e, h in the 5–9th positions stand for perturbations from Ceres, Pallas, Vesta, Eunomia, and Hygiea, correspondingly; the 10th position is left for reserve; L in the 11th position means separate perturbations from the Earth and the Moon, R in the 12th positions means relativistics perturbations, and 0 or 3 in the 13th position stands for DE403 coordinates of perturbing planets; blank in any position of the code means neglecting corresponding perturbations),
• author of the elements,
• reference to publication where initial set of elements was first published (MPC with number stands for page of Minor Planet Circulars, MPO with number — for page of Minor Planet Circulars Orbital Supplement, EP with number — for year of Ephemerides of Minor Planets)

     The opposition dates of the numbered minor planets in 2011 are given in the file opp.txt. Apart from opposition date the apparent magnitude for the fourth ephemeris date is given for each planet. A dash indicates that there is no opposition in 2011.
     During 2012 minor planets with numbers 3360, 3838, 6455, 29075, 41429, 138937, 144411, 153195, 153958, 153958, 192642, 212359, 214869, 225586, 285540, 312942, 313809, 317255, 319988 have two oppositions each. For these planets corresponding information are given in several lines.
     The column TE of the Table contains the year of the ephemeris volume in which the orbit was first introduced. A dash in this column indicates that elements of corresponding planet have never yet been published in EMP.

     Ephemerides of minor planets, arranged in order of opposition date, are given in the files 2012_04.eph, 2012_05.eph, and 2012_06.eph.
     The following data are tabulated for each planet:
     1.The number and name or principal provisional designation of minor planet, the opposition date, the mean anomaly on the fourth ephemeris date, the minimum value of the phase angle and the date of its occurrence, the year of the most recent astrometric observation. In case the planet is on critical list (not observed during the nearest ten years or observed in fewer than four oppositions), the year of the last astrometric observations is followed by symbol C. When it is known that rotational lightcurve variations exceed 0.4 mag, at least on occasion, the ephemeris header is ended in flag R. Where it is known or suspected that aspect variations cause large excursion (>0.4 mag) in the observed magnitude from opposition to opposition the flag A is used rather than R.
     2. Astrometric position (right ascension and declination) for 0 hour TT, referred to the equator and equinox of J2000.0, geocentric and heliocentric distances, the phase angle, and the apparent V magnitude are given for each of eight ephemeris dates, at 10-day interval.

     Data included in the files of elements, opposition dates and ephemerides can be used at user's discretion. Nevertheless, to facilitate selection of necessary information from files and its subsequent use the software package MUSE is included into UEMP/UEMPGZP directories.
     The package provides a means for fulfillment of the following operations.

1. Selecting from files in conformity with a certain condition or combination of some conditions imposed on elements of minor planets or on certain functions of the elements.
   
2. Calculating some additional widely used functions of the orbital elements such as the perihelion and aphelion distances, the period of revolution, the mean daily motion in arcsec, the mean opposition magnitude and so on.
   
3. Sorting tabular data.
   
4. Drawing frequency distribution graphs (histograms), and computations of some statistical characteristics of the distributions. Drawing plots of scattering of elements in two or tree-dimensional phase space.
   
5. Interpolating ephemeris data.
   
6. Computation of O–C (observed minus computed) for the numbered minor planets. Observed positions can be inputted directly by typing the data according to conventional format or the input file can be formed in some way in advance.
   
7. Identification of planets, that is to say, ascribing the observed positions of some object to the numbered minor planet(s). User has possibility to change the limits of allowable deviations from computed positions.
   
8. Preparation of the list of minor planets which can be seen at the moment within certain sky region and visualization of their mutual positions.