SSSource
LSST-computed per-source quantities. 1::1 relationship with DiaSource.
Columns
| name | datatype | description | unit | nullable | ivoa:ucd | votable:arraysize | length |
|---|---|---|---|---|---|---|---|
| diaSourceId primary key | long | Unique identifier of the observation (matching DiaSource.diaSourceId). | false | meta.id;src | |||
| ssObjectId | long | Unique LSST identifier of the Solar System object. | false | meta.id;src | |||
| designation | char | The unpacked primary provisional designation for this object. | true | meta.id;src | 16 | 16 | |
| eclLambda | double | Ecliptic longitude, converted from the observed coordinates. | deg | false | pos.ecliptic.lon | ||
| eclBeta | double | Ecliptic latitude, converted from the observed coordinates. | deg | false | pos.ecliptic.lat | ||
| galLon | double | Galactic longitude, converted from the observed coordinates. | deg | false | pos.galactic.lon | ||
| galLat | double | Galactic latitude, converted from the observed coordinates. | deg | false | pos.galactic.lat | ||
| elongation | float | Solar elongation of the object at the time of observation. | deg | true | pos.phaseAng | ||
| phaseAngle | float | Phase angle between the Sun, object, and observer. | deg | true | pos.phaseAng | ||
| topoRange | float | Topocentric distance (delta) at light-emission time. | AU | true | pos.distance | ||
| topoRangeRate | float | Topocentric radial (line-of-sight) velocity (deldot); positive values indicate motion away from the observer. | km/s | true | phys.veloc | ||
| helioRange | float | Heliocentric distance (r) at light-emission time. | AU | true | pos.distance;pos.heliocentric | ||
| helioRangeRate | float | Heliocentric radial velocity (rdot); positive values indicate motion away from the Sun. | km/s | true | phys.veloc;pos.heliocentric | ||
| ephRa | double | Predicted ICRS right ascension from the orbit in mpc_orbits. | deg | true | pos.eq.ra;meta.modelled;pos.ephem | ||
| ephDec | double | Predicted ICRS declination from the orbit in mpc_orbits. | deg | true | pos.eq.dec;meta.modelled;pos.ephem | ||
| ephVmag | float | Predicted magnitude in V band, computed from mpc_orbits data including the mpc_orbits-provided (H, G) estimates | mag | true | phot.mag;em.opt.V | ||
| ephRate | float | Total predicted on-sky angular rate of motion. | deg/d | true | pos.pm;pos.ephem | ||
| ephRateRa | float | Predicted on-sky angular rate in the R.A. direction (includes the cos(dec) factor). | deg/d | true | pos.pm;pos.eq.ra;pos.ephem | ||
| ephRateDec | float | Predicted on-sky angular rate in the declination direction. | deg/d | true | pos.pm;pos.eq.dec;pos.ephem | ||
| ephOffset | float | Total observed versus predicted angular separation on the sky. | arcsec | true | pos.angDistance;stat.fit.omc | ||
| ephOffsetRa | double | Offset between observed and predicted position in the R.A. direction (includes cos(dec) term). | arcsec | true | pos.eq.ra;stat.fit.omc | ||
| ephOffsetDec | double | Offset between observed and predicted position in declination. | arcsec | true | pos.eq.dec;stat.fit.omc | ||
| ephOffsetAlongTrack | float | Offset between observed and predicted position in the along-track direction on the sky. | arcsec | true | pos.angDistance;stat.fit.omc | ||
| ephOffsetCrossTrack | float | Offset between observed and predicted position in the cross-track direction on the sky. | arcsec | true | pos.angDistance;stat.fit.omc | ||
| helio_x | float | Cartesian heliocentric X coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.x;pos.heliocentric | ||
| helio_y | float | Cartesian heliocentric Y coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.y;pos.heliocentric | ||
| helio_z | float | Cartesian heliocentric Z coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.z;pos.heliocentric | ||
| helio_vx | float | Cartesian heliocentric X velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.x | ||
| helio_vy | float | Cartesian heliocentric Y velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.y | ||
| helio_vz | float | Cartesian heliocentric Z velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.z | ||
| helio_vtot | float | The magnitude of the heliocentric velocity vector, sqrt(vx*vx + vy*vy + vz*vz). | km/s | true | phys.veloc;pos.heliocentric | ||
| topo_x | float | Cartesian topocentric X coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.x | ||
| topo_y | float | Cartesian topocentric Y coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.y | ||
| topo_z | float | Cartesian topocentric Z coordinate at light-emission time (ICRS). | AU | true | pos.cartesian.z | ||
| topo_vx | float | Cartesian topocentric X velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.x | ||
| topo_vy | float | Cartesian topocentric Y velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.y | ||
| topo_vz | float | Cartesian topocentric Z velocity at light-emission time (ICRS). | km/s | true | phys.veloc;pos.cartesian.z | ||
| topo_vtot | float | The magnitude of the topocentric velocity vector, sqrt(vx*vx + vy*vy + vz*vz). | km/s | true | phys.veloc | ||
| diaDistanceRank | short | The rank of the diaSourceId-identified source in terms of its closeness to the predicted SSO position. If diaSourceId is the nearest DiaSource to this SSO prediction, diaSourceDistanceRank=1 would be set. If it is the second nearest, it would be 2, etc. | true |