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Frame coordinates UCD/unitscelestialbodycartesiansphericalcylindricalhealpix

c1min

pos.eq.ra;stat.min 

pos.bodyrc.lon;stat.min

pos.cartesian.x;stat.min

(in km)

pos.distance;stat.min (beuh)
or pos.radiusspherical.r;stat.min (does not exist)min 

pos.distance;stat.min (beuh)
or pos.radius;stat.min (does not exist)

TBC, will conform to IVOA decision

cylindrical.r;stat.min 

c1maxpos.eq.ra;stat.maxpos.bodyrc.lon;stat.max

pos.cartesian.x;stat.max

(in km)

pos.spherical.r;stat.max

pos.cylindrical.r;stat.max

c2minpos.eq.dec;stat.minpos.bodyrc.lat;stat.min

pos.cartesian.y;stat.min

(in km)

pos.

angDistance;stat.min
or pos.az.zd

spherical.colat;stat.min

?

pos.

az

cylindrical.azi;stat.min

c2maxpos.eq.dec;stat.maxpos.bodyrc.lat;stat.max

pos.cartesian.y;stat.max

(in km)

pos.

angDistance;stat.max
or pos.az.zd

spherical.colat;stat.max

?

pos.

az

cylindrical.azi;stat.max

c3min

pos.distance;stat.min

(in AU)

pos.bodyrc.alt;stat.min (from surface only, implicitly from reference level)
or
pos.distance;pos.bodyrc;stat.min (from center)?

(in km)

pos.cartesian.z;stat.min

(in km)

pos.

AngDistance;stat.min
or pos.az.

spherical.azi;stat.min

?

pos.cylindrical.distancez;stat.min

(height)(in km)

c3max

pos.distance;stat.max

(in AU)

pos.bodyrc.alt;stat.max (from surface only, implicitly from reference level)
or
pos.distance;pos.bodyrc;stat.max (from center)?

(in km)

pos.cartesian.z;stat.max

(in km)

pos.

AngDistance;stat.max 
or pos.az.

spherical.azi;stat.max

?

pos.cylindrical.distancez;stat.max

(height)(in km)

Example table for IDs:

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