"M87" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "proper noun"
      },
      "expansion": "M87",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "mul",
          "name": "Astronomy",
          "orig": "mul:Astronomy",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "alt": "the central supermassive blackhole of M87",
          "word": "M87*"
        }
      ],
      "glosses": [
        "Messier 87; the central galaxy of the Virgo Cluster"
      ],
      "id": "en-M87-mul-name-SAjszvBq",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "Messier 87",
          "Messier 87#English"
        ]
      ],
      "raw_glosses": [
        "(astronomy) Messier 87; the central galaxy of the Virgo Cluster"
      ],
      "synonyms": [
        {
          "word": "NGC 4486"
        },
        {
          "word": "Vir X-1"
        },
        {
          "word": "Vir A"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "M87"
}

{
  "derived": [
    {
      "alt": "the central supermassive blackhole of M87",
      "word": "M87*"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "proper noun"
      },
      "expansion": "M87",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual proper nouns",
        "Translingual terms spelled with numbers",
        "mul:Astronomy"
      ],
      "glosses": [
        "Messier 87; the central galaxy of the Virgo Cluster"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "Messier 87",
          "Messier 87#English"
        ]
      ],
      "raw_glosses": [
        "(astronomy) Messier 87; the central galaxy of the Virgo Cluster"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "NGC 4486"
    },
    {
      "word": "Vir X-1"
    },
    {
      "word": "Vir A"
    }
  ],
  "word": "M87"
}