Astrometric/Positions Data Base Content

This page is for the observers wanted to know the differents fields on the database.

• Binning : Binnig used.
• Catalogue : The name(s) of the stars catalogue(s) used to make the reduction
• Comments : Observer comments on the provided data.
• Contact : Name of the person to contact if more informations are needed about the observation and data reduction.
• Coordinate 1 : First coordinate of the measured target
• Coordinate 2 : Second coordinate of the measured target
• Coordinate type : Describe types and units of the measured coordinates. The keywords accepted are : 'Absolute','Relative','Position angle','Separation','Differential','Tangential','Pixel','Millimeter'
• dataset_id : Auto increment dataset id for each dataset in the database.
• Date time : Mid-time of the observation in UTC (UT1 before 1972) without light-time correction (Julian Day).
• Deposit date time : The deposit datetime.
• Differential refraction corr. : Tell if the correction for the differential refraction have been applied.The keywords accepted are : 'Done','None','Unknown'
• Email : Email of the contact.
• Exposure : Exposition time.
• Filters : Filters used.
• Frame : Define direction of the coordinates frame's axes used for "COORDi" and "SIGMAi". The keywords accepted are :
  1. True equator and equinox of date of observation
  2. True equator and equinox of the planet of date of observation
  3. Mean equator and equinox at the nearest beginning of a year
  4. Mean equator and equinox at 1st January of the date of observation
  5. Mean equator and equinox B1900
  6. Mean equator and equinox B1950
  7. Mean equator and equinox J2000
  8. 'Other'
• Frame center : IAU nomenclature for the center of the coordinates frame ("SUN", "EARTH", "CASSINI")
• id : Auto increment for each data in the database.
• Image name : Name of the image.
• Quality : Confidence on the quality of the observation data and metadata. The keywords accepted are : 'Unknown', 'Bad','Medium','Good'
• Instrument : Description of the instrument used (telescope, camera, etc.).
• Light time correction : Tell if the correction for the light-time have been applied. The keywords accepted are : 'Done','None','Unknown'
• Numbers stars : Number of stars used to make the reduction
• O-C1 : Indicative O-C for the first measured coordinate
• O-C2 : Indicative O-C for the second measured coordinate
• O-C ephemeride : Ephemerides used for indicative O-C
• Observatory : Available standard code. See Minor Planet Center for ground Observatory, NASA's NAIF integer ID codes for spacecrafts and complementary ground based telescopes.
• Observation event : Type of photometry event observed. The keywords accepted are : 'Mutual event', 'Occultation', 'Eclipse','NA'.
• Observation position frame : Define direction of the coordinates frame's axes used for "OBSPOSx". The keywords accepted are :
  1. True equator and equinox of date of observation
  2. True equator and equinox of the planet of date of observation
  3. Mean equator and equinox at the nearest beginning of a year
  4. Mean equator and equinox at 1st January of the date of observation
  5. Mean equator and equinox B1900
  6. Mean equator and equinox B1950
  7. Mean equator and equinox J2000
  8. Other
• Obs. position frame center IAU nomenclature for the centre of the coordinates frame used for "OBSPOSx"
• Observation position theory : Theory used to get the position of the observatory/spacecraft
• Obs. position x : The observation position in x observed.
• Obs. position y : The observation position in y observed.
• Obs. position z : The observation position in z observed.
• Observation type : Support used to make the observation. The keyword accepted are :'CCD','Plate','Visual','Photometry'.
• Origin : IAU nomenclature for the origin of the measure (cf. www.iau.org)
• Publication reference : Publication or note reference that refers to the observation (e.g. DOI ref., ADS ref., etc.).
• Publication source : Source of the publication reference (e.g. "DOI", "ADS", etc.).
• Reduction number : To identify a new reduction for an existing observation
• Refraction correction : Tell if the correction for the refraction have been applied. The keywords accepted are : 'Done','None','Unknown'
• Sigma 1 : Sigma estimated/computed uncertainty of the first coordinate
• Sigma 2 : Sigma estimated/computed uncertainty of the second coordinate
• Sigma type : Describe types and units of the measured coordinates uncertainty. The keywords accepted are : 'Absolute','Relative','Position angle','Separation','Differential','Tangential','Pixel','Millimeter'
• Status : Flag that defined if the observation have been verified by the database administrator.The keywords accepted are : 'unverified','verified'.
• Target: IAU nomenclature for the measured target (cf. www.iau.org)