MKK Luminosity Class Lookup

Independently verified MK luminosity class descriptor, spectral classification not automatic radius/luminosity inference. Exact independently verified context/edition key; not embedded or live reference data. Model only, not an ephemeris, measured stellar identity or observational guarantee.

Description

MKK luminosity classes describe a classification convention rather than luminosity in watts.

MKK luminosity classes describe a classification convention rather than luminosity in watts.^[1]

A supplied notice preserves the intended class interpretation without classifying a spectrum. Use MKK Luminosity Class Lookup to retrieve an exact caller-supplied reference entry.

When to use MKK Luminosity Class Lookup

Use MKK Luminosity Class Lookup to retrieve an exact caller-supplied reference entry. Choose an independently reviewed reference for the exact historical, cultural or technical context, then supply its keys and texts.

How to use MKK Luminosity Class Lookup and understand its results

Choose an independently reviewed reference for the exact historical, cultural or technical context, then supply its keys and texts.
Enter Caller verified mkk luminosity class keys, Caller verified mkk luminosity class notices, Query mkk luminosity class key using the field table and validation rules below, then run the tool.
Read Matched caller notice; interpret the units, signs, ordering and unknown-value placeholders described below.
Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.

Input field	Meaning	Value type	Requirement
callerVerifiedMkkLuminosityClassKeys	Caller verified mkk luminosity class keys	array of string	Required; constraints below
callerVerifiedMkkLuminosityClassNotices	Caller verified mkk luminosity class notices	array of string	Required; constraints below
queryMkkLuminosityClassKey	Query mkk luminosity class key	string	Required; constraints below

Provide aligned, nonempty arrays of reference keys and independently verified notices, then enter the exact query key. Keys must be unique, nonblank and at most 128 UTF-16 code units long; notices must be nonblank. Matching is case sensitive and does not trim the query or returned text. The matching notice is returned unchanged; an unknown key is an input error. The reference contents and their applicability are supplied by the caller; the tool does not retrieve external records or verify source authority.

matched reference = suppliedTexts[indexOfExactQueryKey(suppliedKeys)]

Use the field order, units and branch conditions described above.

Output field	Meaning	Value type
matchedCallerNotice	Exact caller-supplied notice, unchanged and unverified.	string

json

{
  "input": {
    "callerVerifiedMkkLuminosityClassKeys": [
      "context-a/edition-a",
      "context-a/edition-b"
    ],
    "callerVerifiedMkkLuminosityClassNotices": [
      "independently verified reference a",
      "independently verified reference b"
    ],
    "queryMkkLuminosityClassKey": "context-a/edition-b"
  },
  "output": {
    "matchedCallerNotice": "independently verified reference b"
  }
}

Limitations and assumptions

A supplied notice preserves the intended class interpretation without classifying a spectrum. Apply the exact scope and assumptions explained above.

All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.

Alternative or Complementary methods

Use Spectral Class Properties Lookup for a related task: Spectral classifications summarize properties under a particular classification convention.

Use Main Sequence Mass By Type Lookup for a related task: Main-sequence mass references depend on calibration and stellar classification.

References

MKK Luminosity Class Lookup — tool.io

Similar or alternative tools

Spectral Class Properties Lookup
Spectral classifications summarize properties under a particular classification convention.
Main Sequence Mass By Type Lookup
Main-sequence mass references depend on calibration and stellar classification.