Description of the columns.
| Name | Unit | Description |
|---|---|---|
| naifid | - | NASA’s Navigation and Ancillary Information Facility2 solar system object code of the target. |
| targetname | - | The name or the designation of the asteroid. |
| observatory_project | - | Name of the observatory/ space mission. |
| observatory_code | - | JPL/Horizons code of the observatory/spacecraft. |
| instrument_detector | - | Instrument of the observatory/spacecraft used in that specific measurement. |
| obsmode | - | Name of the observing modes. |
| observation_IDs | - | Mission-specific identifier of the observation, e.g. OBSID for Herschel measurements and AORKEY for Spitzer observations. |
| observation_start_time | day | Start time of the measurement. |
| observation_mid_time | day | Mid-time of the measurement. |
| observation_end_time | day | End time of the measurement. |
| datetime | - | Observation date in the format ’YYYY:MM:DD hh:mm:ss.sss’, with YYYY: year, MM: month in string format (Jan, Feb, etc.), DD: day of the month, hh: hour of the day, mm: minutes, ss.sss: seconds with three-digit accuracy. |
| band_filter | - | Name of the filter/band used for the specific observation. |
| calibrated_inband_flux Jy | Jy | In-band photometric flux density in [Jansky] units, with all photometric corrections applied, including aperture/encircled energy fraction corrections, but without colour correction. |
| inband flux error Jy | Jy | Uncertainty of the in-band photometric flux density ’calibrated inband flux Jy’, with all direct photometric errors considered, but without errors related to the spectral energy distribution of the target (colour correction), and also without the consideration of the absolute photometric error of the instrument. |
| quality_flags | - | Contamination and confusion flags and photometric quality flags. |
| orbital_param_A | au | Semi-major axis of the target’s orbit, as obtained from JPL/Horizons. |
| orbital_param_EC | - | Eccentricity of the target’s orbit, as obtained from JPL/Horizons. |
| orbital_param_IN | deg | Inclination of the target’s orbit, as obtained from JPL/Horizons. |
| orbital_param_OM | deg | Longitude of the ascending node of the target’s orbit, as obtained from JPL/Horizons. |
| orbital_param_W | deg | Argument of the periapsis of the target’s orbit, as obtained from JPL/Horizons. |
| orbital_param_MA | deg | The mean anomaly of the target’s orbit, as obtained from JPL/Horizons. |
| absolute_magnitude_H | mag | The absolute magnitde of the target, i.e. the visual magnitude an observer would record if the asteroid were placed 1 AU away, and 1 AU from the Sun and at a zero phase angle, as obtained from JPL/Horizons. |
| slope_parameter_G | - | ’G’ slope parameter of the target, describing the dependence of the apparent brightness on the phase angle (light scattering on the asteroid’s surface), for more details, see Bowel (1989). |
| jpl_obj_radius | km | Estimated radius of the target as obtained from JPL Horizons. |
| jpl_obj_albedo | - | Estimated V-band geometric albedo of the target as obtained from JPL Horizons. |
| Right_Ascension_RA | deg | Right ascension (J2000) of the target at observation mid-time, calculated from the orbit by JPL/Horizons. |
| Declination_DEC | deg | Declination (J2000) of the target at observation mid-time, calculated from the orbit by JPL/Horizons. |
| RA_rate | arcsec/sec | The rate of change in right ascension. |
| DEC_rate | arcsec/sec | The rate of change in declination. |
| apparent_magnitude_V | mag | Estimated apparent brightness of the target in V-band at observation mid-time, as obtained by JPL/Horizons. |
| heliocentric_distance_r | au | Heliocentric distance of the target at observation mid-time, as obtained by JPL/Horizons. |
| obscentric_distance_delta | au | Observer to target distance at observation mid-time, as obtained by JPL/Horizons. |
| lighttime | sec | The elapsed time since light (observed at print-time) would have left or reflected off a point at the center of the target. |
| solar_elongation_elong | deg | Target’s apparent solar elongation seen from the observer location at print-time. |
| before_after_opposition | - | A flag regarding the target’s apparent position relative to the Sun in the observer’s sky. ’/T’ indicates trailing, ’/L’ leading position with respect to the Sun. |
| phase_angle_alpha | deg | The Sun{Target{Observer angle at observation mid-time, as obtained by JPL/Horizons. |
| ObsEclLon/ObsEclLat | deg | Observer-centered Earth ecliptic-of-date longitude and latitude of the target center’s apparent position, adjusted for light-time, the gravitational deflection of light and stellar aberration, in degrees, as obtained by JPL/Horizons. |
| target_[X,Y,Z]@sun | au | Sun-centered X, Y, Z Cartesian coordinates of the target body at observation mid-time, in the reference frame defined in Archinal et al. (2011). |
| target_[X,Y,Z]@observer | au | Observer-centered X, Y, Z Cartesian coordinates of the target body at observation mid-time, in the reference frame defined in Archinal et al. (2011). |
| observer_[X,Y,Z]@sun | au | Sun-centered X, Y, Z Cartesian coordinates of the observer at observation midtime, in the reference frame defined in Archinal et al. (2011). |
| reference_wavelengths_micron | µm | Reference wavelength of the measuring filter in [µm] units. |
| colour_correction_factor | - | Colour correction factor applied to obtain monochromatic flux density from in-band flux density. |
| colour_corrected_flux density | Jy | Monochromatic flux density (colour corrected in-band flux density). |
| absolute_flux_error | Jy | Absolute uncertainty of the monochromatic flux density including the uncertainty of the absolute flux calibration. |
| comments_remarks | - | Comments regarding the quality of the measurement / information when an assumed value was applied in the calculations, indicating whether the target is (also) regarded as a comet in JPL/Horizons. |
| LTcorrected_epoch | day | The lighttime corrected epoch, calculated as observation mid time − lighttime/3600/24. |
| documents_references | - | Publications/resources where the photometric data were taken from. |
| input_table_source | - | Name of the input file which the database was generated from (strictly for internal usage). |
| data_last_modification | - | The date when the record was last modified, in ’human readable’ format: ’YYYY-MMM-DD hh:mm:ss. |
| alt_target_name | - | Alternative designations of the asteroid, like asteroid number and/or provisional designation, separated by '#'. |