Data Preview 0.3

Data Preview 0.3 (ten-year version): Contains the catalog products of a Solar System Science Collaboration simulation of the results of SSO analysis of the wide-fast-deep data from the full LSST ten-year dataset.

SSObject

LSST-computed per-object quantities. 1:1 relationship with MPCORB. Recomputed daily, upon MPCORB ingestion.

Column Name Data Type Unit Description UCD Index Principal
ssObjectId long Unique identifier. meta.id;meta.main;src
discoverySubmissionDate double d The date the LSST first linked and submitted the discovery observations to the MPC. May be NULL if not an LSST discovery. The date format will follow general LSST conventions (MJD TAI, at the moment).
firstObservationDate double d The time of the first LSST observation of this object (could be precovered)
arc float d Arc of LSST observations
numObs int Number of LSST observations of this object
MOID float AU Minimum orbit intersection distance to Earth
MOIDTrueAnomaly float deg True anomaly of the MOID point
MOIDEclipticLongitude float deg Ecliptic longitude of the MOID point
MOIDDeltaV float km/s DeltaV at the MOID point
u_H float mag Best fit absolute magnitude (u band)
u_G12 float mag Best fit G12 slope parameter (u band)
u_HErr float mag Uncertainty of H (u band) stat.error
u_G12Err float mag Uncertainty of G12 (u band) stat.error
u_H_uG12_Cov float mag**2 H-G12 covariance (u band) stat.covariance
u_Chi2 float Chi^2 statistic of the phase curve fit (u band) stat.fit.chi2
u_Ndata int The number of data points used to fit the phase curve (u band)
g_H float mag Best fit absolute magnitude (g band)
g_G12 float mag Best fit G12 slope parameter (g band)
g_HErr float mag Uncertainty of H (g band) stat.error
g_G12Err float mag Uncertainty of G12 (g band) stat.error
g_H_gG12_Cov float mag**2 H-G12 covariance (g band) stat.covariance
g_Chi2 float Chi^2 statistic of the phase curve fit (g band) stat.fit.chi2
g_Ndata int The number of data points used to fit the phase curve (g band)
r_H float mag Best fit absolute magnitude (r band)
r_G12 float mag Best fit G12 slope parameter (r band)
r_HErr float mag Uncertainty of H (r band) stat.error
r_G12Err float mag Uncertainty of G12 (r band) stat.error
r_H_rG12_Cov float mag**2 H-G12 covariance (r band) stat.covariance
r_Chi2 float Chi^2 statistic of the phase curve fit (r band) stat.fit.chi2
r_Ndata int The number of data points used to fit the phase curve (r band)
i_H float mag Best fit absolute magnitude (i band)
i_G12 float mag Best fit G12 slope parameter (i band)
i_HErr float mag Uncertainty of H (i band) stat.error
i_G12Err float mag Uncertainty of G12 (i band) stat.error
i_H_iG12_Cov float mag**2 H-G12 covariance (i band) stat.covariance
i_Chi2 float Chi^2 statistic of the phase curve fit (i band) stat.fit.chi2
i_Ndata int The number of data points used to fit the phase curve (i band)
z_H float mag Best fit absolute magnitude (z band)
z_G12 float mag Best fit G12 slope parameter (z band)
z_HErr float mag Uncertainty of H (z band) stat.error
z_G12Err float mag Uncertainty of G12 (z band) stat.error
z_H_zG12_Cov float mag**2 H-G12 covariance (z band) stat.covariance
z_Chi2 float Chi^2 statistic of the phase curve fit (z band) stat.fit.chi2
z_Ndata int The number of data points used to fit the phase curve (z band)
y_H float mag Best fit absolute magnitude (y band)
y_G12 float mag Best fit G12 slope parameter (y band)
y_HErr float mag Uncertainty of H (y band) stat.error
y_G12Err float mag Uncertainty of G12 (y band) stat.error
y_H_yG12_Cov float mag**2 H-G12 covariance (y band) stat.covariance
y_Chi2 float Chi^2 statistic of the phase curve fit (y band) stat.fit.chi2
y_Ndata int The number of data points used to fit the phase curve (y band)
maxExtendedness float maximum `extendedness` value from the DIASource
minExtendedness float minimum `extendedness` value from the DIASource
medianExtendedness float median `extendedness` value from the DIASource
flags long Flags, bitwise OR tbd. meta.code

DiaSource

Table to store 'difference image sources' - sources detected at SNR >=5 on difference images.

Column Name Data Type Unit Description UCD Index Principal
diaSourceId long Unique id. meta.id;meta.main;src
ccdVisitId long Id of the ccdVisit where this diaSource was measured. Note that we are allowing a diaSource to belong to multiple amplifiers, but it may not span multiple ccds. meta.id;obs.image
diaObjectId long Id of the diaObject this source was associated with, if any. If not, it is set to NULL (each diaSource will be associated with either a diaObject or ssObject). meta.id;src
ssObjectId long Id of the ssObject this source was associated with, if any. If not, it is set to NULL (each diaSource will be associated with either a diaObject or ssObject). meta.id;src
nameTrue char MPC or simulation designation of the moving object
ssObjectReassocTime timestamp Time when this diaSource was reassociated from diaObject to ssObject (if such reassociation happens, otherwise NULL).
midPointMjdTai double d Effective mid-exposure time for this diaSource. time.epoch
ra double deg RA-coordinate of the center of this diaSource. pos.eq.ra
raErr float deg Uncertainty of ra. stat.error;pos.eq.ra
dec double deg Dec-coordinate of the center of this diaSource. pos.eq.dec
decErr float deg Uncertainty of dec. stat.error;pos.eq.dec
ra_dec_Cov float deg**2 Covariance between ra and dec. stat.covariance
snr float The signal-to-noise ratio at which this source was detected in the difference image. stat.snr
band char Name of the band used to take the exposure where this source was measured
mag float Magnitude. This is a placeholder and should be replaced by flux.
magErr float Magnitude error. This is a placeholder and should be replaced by flux error.
magTrueVband float True (noiseless) V-band magnitude of the simulated diaSource
raTrue double True (noiseless) right ascension of the simulated diaSource
decTrue double True (noiseless) declination of the simulated diaSource

SSSource

LSST-computed per-source quantities. 1:1 relationship with DiaSource. Recomputed daily, upon MPCORB ingestion.

Column Name Data Type Unit Description UCD Index Principal
ssObjectId long Unique identifier of the object. meta.id;src
diaSourceId long Unique identifier of the observation meta.id;meta.main;src
mpcUniqueId long MPC unique identifier of the observation
eclipticLambda double deg Ecliptic longitude
eclipticBeta double deg Ecliptic latitude
galacticL double deg Galactic longitude
galacticB double deg Galactic latitute
phaseAngle float deg Phase angle
heliocentricDist float AU Heliocentric distance
topocentricDist float AU Topocentric distace
predictedMagnitude float mag Predicted magnitude
predictedMagnitudeErr float mag Prediction uncertainty (1-sigma)
residualRa double deg Residual R.A. vs. ephemeris
residualDec double deg Residual Dec vs. ephemeris
predictedRaErr float deg Predicted R.A. uncertainty
predictedDecErr float deg Predicted Dec uncertainty
predictedRaDecCov float deg**2 Predicted R.A./Dec covariance
heliocentricX float AU Cartesian heliocentric X coordinate (at the emit time)
heliocentricY float AU Cartesian heliocentric Y coordinate (at the emit time)
heliocentricZ float AU Cartesian heliocentric Z coordinate (at the emit time)
heliocentricVX float AU Cartesian heliocentric X velocity (at the emit time)
heliocentricVY float AU Cartesian heliocentric Y velocity (at the emit time)
heliocentricVZ float AU Cartesian heliocentric Z velocity (at the emit time)
topocentricX float AU Cartesian topocentric X coordinate (at the emit time)
topocentricY float AU Cartesian topocentric Y coordinate (at the emit time)
topocentricZ float AU Cartesian topocentric Z coordinate (at the emit time)
topocentricVX float AU Cartesian topocentric X velocity (at the emit time)
topocentricVY float AU Cartesian topocentric Y velocity (at the emit time)
topocentricVZ float AU Cartesian topocentric Z velocity (at the emit time)

MPCORB

The orbit catalog produced by the Minor Planet Center. Ingested daily. O(10M) rows by survey end. The columns are described at https://minorplanetcenter.net//iau/info/MPOrbitFormat.html

Column Name Data Type Unit Description UCD Index Principal
mpcDesignation char MPCORB: Number or provisional designation (in packed form) meta.id;src
mpcNumber int MPC number (if the asteroid has been numbered; NULL otherwise). Provided for convenience.
ssObjectId long LSST unique identifier (if observed by LSST) meta.id;src
mpcH float mag MPCORB: Absolute magnitude, H
mpcG float MPCORB: Slope parameter, G
epoch double d MPCORB: Epoch (in MJD, .0 TT)
tperi double d MPCORB: MJD of pericentric passage
peri double deg MPCORB: Argument of perihelion, J2000.0 (degrees)
node double deg MPCORB: Longitude of the ascending node, J2000.0 (degrees)
incl double deg MPCORB: Inclination to the ecliptic, J2000.0 (degrees)
e double MPCORB: Orbital eccentricity
n double deg/d MPCORB: Mean daily motion (degrees per day)
q double AU MPCORB: Perihelion distance (AU)
uncertaintyParameter char MPCORB: Uncertainty parameter, U
reference char MPCORB: Reference
nobs int MPCORB: Number of observations
nopp int MPCORB: Number of oppositions
arc float d MPCORB: Arc (days), for single-opposition objects
arcStart timestamp MPCORB: Year of first observation (for multi-opposition objects)
arcEnd timestamp MPCORB: Year of last observation (for multi-opposition objects)
rms float arcsec MPCORB: r.m.s residual (")
pertsShort char MPCORB: Coarse indicator of perturbers (blank if unperturbed one-opposition object)
pertsLong char MPCORB: Precise indicator of perturbers (blank if unperturbed one-opposition object)
computer char MPCORB: Computer name
flags int MPCORB: 4-hexdigit flags. See https://minorplanetcenter.net//iau/info/MPOrbitFormat.html for details
fullDesignation char MPCORB: Readable designation
lastIncludedObservation float d MPCORB: Date of last observation included in orbit solution

SDM Schemas is maintained by Rubin Observatory.