What do the notations like “NED01”, “ID”, and “NOTES02” mean?
A.: These are suffixes which we add to a root name to distinguish physically separate objects which do not otherwise carry separate names. For example, UGC 01562 is a double galaxy, but has only one entry in UGC. In order to include both galaxies in NED with unique names, we add the notation “NED01” and “NED02” to “UGC 01562”. Similarly, we add “NOTES01” to UGC 01562 to refer to a galaxy included only in the UGC Notes for UGC 01562. We typically use the “ID” suffix to indicate that a non-optical source (e.g. an infrared source) has been associated with an otherwise unnamed physical object, usually a galaxy. An example is “IRAS 00182+1130”. This has been identified as a galaxy, but not given a separate name. The “ID” notation makes it clear that the object has been reclassified from its original type. Other suffixes that we use include “COM” for a nearby companion, not necessarily physically connected to the main object (e.g. “3C 227 COM01”), “ABS” for an absorption line system seen alo
A.: These are suffixes which we add to a root name to distinguish physically separate objects which do not otherwise carry separate names. For example, UGC 01562 is a double galaxy, but has only one entry in UGC. In order to include both galaxies in NED with unique names, we add the notation “NED01” and “NED02” to “UGC 01562”. Similarly, we add “NOTES01” to UGC 01562 to refer to a galaxy included only in the UGC Notes for UGC 01562. We typically use the “ID” suffix to indicate that a non-optical source (e.g. an infrared source) has been associated with an otherwise unnamed physical object, usually a galaxy. An example is “IRAS 00182+1130”. This has been identified as a galaxy, but not given a separate name. The “ID” notation makes it clear that the object has been reclassified from its original type. Other suffixes that we use include “COM” for a nearby companion, not necessarily physically connected to the main object (e.g. “3C 227 COM01”), “ABS” for an absorption line system seen alo
